JP2014518817A - Resealable packaging and manufacturing method thereof - Google Patents

Abstract

The flexible film wrap has a partial initial seal against ambient ambient air and can be easily opened and resealed. Flexible film packaging is generally re-sealable to preserve the shelf life or shelf life of the product contained therein after the package is first opened. According to one scheme, the flexible film has two opposite edges, which form a longitudinal seal that faces and extends from the first end seal to the second end seal. The flexible film may have a cut (16) that defines a packaging opening (36). An elongate lid layer (14) extends over the incision to form a longitudinal seal (24) between the first end seal (26) and the second end seal (28) and to each other. It may extend into the opposite edge. The elongate lid layer may have a low adhesion grip for peeling at least a portion of the elongate lid layer from the flexible film to form a packaging opening.

Description

  The present application relates generally to flexible packaging, and in particular to flexible packaging having a reclosable opening.

  Flexible packaging is well known in the art as being used to contain food. Flexible film is substantially airtight for shipping and storing various foods including crackers, chewing gum, chocolate, cookies, cheese, sandwiches, biscuits, candy, meat products, dried fruits and dried vegetables It is possible to provide a lightweight package having a seal. Some such flexible film packages include structural supports such as frames or trays.

  One example of a flexible film package as described above is a pillow-type package, which can use a continuous film or web to wrap the product during assembly or formation of the package. Examples of pillow packaging include horizontal or vertical vertical fin seal, or lap seal seal packaging, end seal wrap, horizontal pouch packaging, and pillow pouch packaging. In one configuration, the pillow wrap positions a flexible film (polyethylene, polyethylene terephthalate (PET), polypropylene, etc.) adjacent to the product, wraps the product with the film, forms a seal from the edges or edges of the film, and then Form a seal at both ends of the product. These seals can be permanent and can also provide some degree of structural integrity. There are other advantages to flexible film packaging. For example, they can be manufactured at a substantially lower cost than rigid containers, are light in weight (and thus reduce transportation costs), and can also reduce the space required for storage.

  Despite the advantages of flexible films, such packaging can be difficult to open for consumers. In addition, such packages often contain various amounts of food, and consumers may not want to use up the food at once. Thus, by providing a reseal function, the user can easily and efficiently keep a portion of the food for later use. The reseal function provides a partial barrier to moisture and gas and may not be a complete hermetic seal, but provides a partially hermetic seal and preserves the shelf life or freshness of the food in its packaging Can help.

US Patent Application No. 13 / 035,399 US Pat. No. 5,158,499

  Flexible packaging with resealable or resealable capabilities is sometimes difficult to manufacture on widely used equipment. For example, some flexible film packages require a dedicated die assembly or heat seal bar to create a seal, a packaging opening, or other features related to the reseal function of the package. . Another drawback associated with the manufacture of some flexible packaging is that it generally requires precision calibrated manufacturing equipment. For example, packaging and processes that utilize adhesives applied in a pattern may require specialized equipment that may require proper calibration. As another example, some laminate structures use die cuts that are cut halfway into the depth from both the inner and outer surfaces of the laminate structure, which makes the equipment more complex. These processes may also require very precise alignment of the packaging elements to ensure that the consumer can easily and reliably open the package and that the flexible package can be properly closed or sealed. unknown.

  In addition, traditional packaging designs tend to require other materials for packaging to meet the equipment and the various specifications specified by the manufacturer and consumer. Such extra films or other materials (such as label mounts) often create expensive waste, which results in increased packaging costs.

  In accordance with various embodiments described herein, flexible film packaging and methods for making such packaging are described herein. The flexible film package may have at least a partial initial seal to the surrounding atmosphere and is easily openable and resealable. More particularly, the initial seal exists prior to the opening of the flexible film package for the first time, and may provide at least a partial barrier to the surrounding atmosphere, including gases and moisture, over time. For example, the initial seal of a flexible film package can provide a light barrier and a gas and moisture barrier for at least 6-8 months before opening for the first time. In some applications, a gas and moisture barrier over a longer period of time before opening for the first time may be desired. In addition, flexible film packaging is generally re-sealable, resulting in unnecessarily shortening the shelf life of food within it by first opening the flexible film packaging and then exposing it to the surrounding atmosphere. It will not be done. Therefore, the flexible film package may have a reseal function that provides a resealable seal that exists after the package is first opened. Although described in this application as for food, this can be applied to medical, pharmaceutical, industrial packaging applications and others other than food.

  In one approach, flexible film packaging is typically configured to contain multiple doses of food. Therefore, the reseal function of the flexible film package helps to preserve the freshness or shelf life of the food remaining in the package after first opening. Flexible film packaging seals, such as longitudinal seals and end seals, including palm seals and wrap seals, are all airtight to help preserve the shelf life of the food contained therein. (And may also have different degrees of hermeticity, such as partial or substantial hermetic seals). The seal can be formed in various ways, for example, heat seal, cold seal, low tack seal such as using low tack adhesive or fasteners, sonic, and combinations thereof. For example, a resealable seal of a flexible film package, such as formed around the package opening, may be partially due to a pressure sensitive adhesive disposed between the flexible film and the elongated lid layer. Can be formed. This resealable sealing function can be formed by various manufacturing processes.

  The flexible film package can take a variety of forms, for example, a bag, pouch, or other shape such as a cylinder, column, or straight. For example, a flexible film package may have a square edge as found in a basically straight package, or a curved edge as found in a more circular or oval package. You may have. In addition, the flexible film package may be formed around the food product, such as a sleeve-shaped package that encloses individual stack (s) of food product. In other applications, the flexible film package may be fully or partially formed and then filled with food, which may be beneficial for a variety of individual food products. Various configurations can be easily opened and resealed while at the same time maintaining the integrity of the packaging.

  According to one approach, the flexible film has two opposite edges that form a longitudinal seal that faces and extends from the first end seal to the second end seal. The flexible film may have a cut that defines the opening of the package when it is first broken, ie, opened for the first time. In one exemplary embodiment, an elongate lid layer extends to cover the cut and from a first end seal (ie, the first end of the package) to a second end seal (ie, the second end of the package). ) And into the region of the opposite edge that faces and forms a longitudinal seal. A pressure sensitive adhesive may be disposed between the flexible film and the elongated lid layer. The elongate lid layer may have a non-stick grip that is used to form a packaging opening by separating at least a portion of the elongate lid layer from the flexible film.

  According to one approach, the configuration and shape of the packaging can be influenced, in part, by the product contained in the packaging, due in part to the flexibility of the laminate film. In other configurations, the flexible film may be configured as a pillow wrap or envelope that surrounds a support structure such as an internal rigid support or product tray.

  The method of manufacturing a flexible film package provided herein includes the steps of incising a notch in a portion of a continuous web of flexible film having a longitudinal axis and sensing the continuous lid layer along the longitudinal axis. Adhering with a pressure adhesive. According to one approach, the continuous lid layer may be applied over a portion of the width of the continuous flexible film web. The method also includes forming a continuous longitudinal seal from two opposite edges of a continuous flexible film web, and forming a first end seal and a second end seal. And may be included. In one method, a grip part to which no adhesive is applied may be formed at the first end of the flexible film. As described below, the soft packaging material may be transformed into a single packaging blank off-line or in-line with respect to the packaging process, and may be formed, for example, in horizontal and vertical pillow packaging.

  The method of wrapping the product in a wrapping continuum may include providing a continuous film web having longitudinal edges and a predetermined width between the longitudinal edges. The method may also include the step of joining the continuous film web and the continuous substrate over a portion of the predetermined full width. According to one approach, a continuous film web is engraved with a cut to define an opening in the film web when the substrate is peeled from the continuous film web, providing some degree of peelability and reseal. An adhesive, such as a pressure sensitive adhesive, that provides the possibility is applied between the continuous substrate and the continuous film web. When performed in-line, the method can provide the product to be packaged in a continuous form and wrap the product in a continuous film web and substrate. In addition, longitudinal seals such as joint seals or lap seals can be provided along the longitudinal edges, providing leading and trailing end seals between adjacent packages in the package continuum. be able to.

  In one configuration, a method of manufacturing a flexible film package includes the steps of engraving a continuous film with a cut to define an opening for an individual package to be formed later, and covering at least the cut. Next, applying a continuous pressure sensitive adhesive label or lid layer, feeding a film / label combination around the product, wrapping the product, and joining the opposite edges of the film vertically Forming a directional seal, forming two substantially transverse end seals, and cutting a peel tab into an unsealed film region distal to the end seal.

  The continuum of flexible films may be formed in-line immediately before wrapping the product with the film or may be formed offline long before the product is packaged. For example, the laminate structure may be manufactured and then supplied to the packaging line, and the package may be filled with the product. In other configurations, the laminate may be formed in-line by a packaging process, in which case the laminate is formed when or just before the product is packaged.

  In this specification, the flexible film may be formed of a thin polymer material. For example, the flexible film may be a flexible sheet material in the form of a winding or as an individual blank. Various processes can be used to form the flexible film. The flexible film may be formed by, for example, laminating, extruding, casting, blowing, or a combination thereof. According to one approach, the flexible film includes a laminate having several thin material layers. The laminate structure may include a polyethylene terephthalate (PET) layer and / or an oriented polypropylene (OPP) layer. Other selectable laminate layers include polyethylene (PE) layer, polypropylene (PP) layer, polylactic acid (PLA) layer, sealant layer, ink or print layer, nylon, metallized oriented polypropylene (to name just a few examples) There are metallized layers such as MET OPP) layers. The thickness and density of such different layers may vary. Furthermore, the flexible film may be a combination of some of the film structures described above. According to another approach, the flexible film may comprise a single layer (monoweb) polymer. If a single layer polymer is used, the film may include, for example, polyethylene terephthalate, polyethylene, nylon, or oriented polypropylene. According to another approach, the flexible film may also include a monoweb and a sealant thereon. Further, the flexible film laminate components may be bonded together by an adhesive or extrusion process.

  When using a PET layer for a flexible film laminate, the PET layer can affect the stiffness of the laminate. More specifically, the PET layer can have different degrees of hardness, from flexible to semi-rigid, depending on the thickness of the PET layer. The PET layer may be incorporated into the laminate because it is relatively light and strong and can have a high transparency if desired. The PET layer can also be beneficial as an oxygen (gas) and moisture barrier. In addition, the OPP layer can further reinforce the flexible film and provide a beneficial barrier to permeability.

  The flexible film package may include a cut that defines the opening of the package when it is first broken, ie, opened for the first time. As used herein, the term “cut” refers to any type of mechanically formed or cut cut line, laser formed cut, or other cutting means that impairs the integrity of the film ( For example, it can mean a weak line or region. The incision may be made halfway through the depth of the flexible film packaging, or it may be a die cut that penetrates the entire depth of the film. The cuts may be formed on either side of the flexible film, in which case the cuts can be made on the outer or inner surface of the flexible film. In one example, the incision is provided from the inner surface of the flexible film to the interior of the flexible film and extends through the flexible film and substantially through the pressure sensitive adhesive. In addition, the incision may also be an intermittent line such as a series of perforations, which may also be provided halfway through the depth of the flexible film, or of the flexible film. You may penetrate the entire depth.

  According to one approach, an elongate lid layer is disposed or continuously deposited over the flexible film so as to cover the cut, so that the elongate lid layer is along one axis of the flexible film. There are no interruptions, i.e. no part without an elongated lid layer. The elongated lid layer may comprise a backing, ie a label such as a label with a release liner or a linerless label. In other configurations, the elongate lid layer may include a second flexible film, and a pressure sensitive adhesive is applied between the flexible film and the second flexible film. As will be described later, the pressure sensitive adhesive may be an intervening layer having a laminate film structure, in which case the pressure sensitive adhesive is laminated between the flexible film and the second flexible film layer.

  In yet another configuration, the elongate lid layer may include a tape that is continuously deposited on the flexible film along its longitudinal axis. Linerless labels may be similar to tape, but linerless labels often require separate printing, for example for alignment. As will be described later, the elongate lid layer may be attached to either a horizontal or vertical package. The continuous lid layer may be transparent, opaque or printed as desired. The continuous lid layer may include any of a variety of flexible or semi-rigid polymers, such as an oriented polypropylene (OPP) or polyethylene terephthalate (PET) layer that includes biaxial OPP. In one exemplary embodiment, the thickness of the continuous lid layer may be about 0.5-5.0 mils (50-500 gauge, 0.0127-0.127 mm). According to one approach, the thickness of the continuous lid layer may be about 1.0-3.0 mils (100-300 gauge, 0.0254-0.0762 mm). In one configuration, the thickness of the continuous lid layer may be about 2.5 mils (250 gauge, 0.0635 mm). In some applications, PET may be desirable due to its thermal resistance when forming a non-peelable seal. Furthermore, the elongate lid layer may be a continuous strip of material that is continuously attached to the flexible film without interruption, although it should be noted that in some configurations the labels are rather individual. It may be a type label, which will be described later in another embodiment.

  The continuous lid layer may be attached so as to cover at least the score line. In addition, the continuous lid layer preferably extends longer than the score line, thereby providing a sufficient peripheral area around the score and opening the score for the first time, i.e., effectively resealing the package opening after breaking. it can.

  As suggested, the package opening is preferably resealable, resulting in an at least partial hermetic seal around the opening (in some configurations, the resealable opening is substantially Airtight). The pressure sensitive adhesive between the flexible film and the elongate lid layer helps to create the feature that the opening of the package is resealable. The pressure sensitive adhesive is preferably neutral, i.e. unresponsive, to the packaged product. According to one approach, pressure sensitive adhesives can be, for example, cold-generating adhesives, hot melt adhesives, cold seal adhesives, natural or synthetic latex, low tack adhesives, ethylene vinyl acetate (EVA), acrylic May include adhesives (water or solvent based acrylic adhesives), styrene block copolymer adhesives, butyl rubber adhesives, silicone rubber adhesives, natural rubber adhesives, nitrile adhesives, acrylic emulsion adhesives, and combinations thereof Good. Further, the pressure sensitive adhesive can be applied by extrusion, coextrusion, printing, or a combination thereof. The thickness of the pressure sensitive adhesive may vary. According to one approach, the thickness of the pressure sensitive adhesive may be about 0.5 to 1.5 mils (50 to 150 gauge, 0.0127 to 0.0381 mm). The pressure sensitive adhesive may be suitable for resealing under various conditions, such as ambient conditions and cooling conditions, to name a few.

  In some configurations, the pressure sensitive adhesive can provide a substantially hermetic seal even under low temperature conditions (ie, the pressure sensitive adhesive is about -10 to 90 degrees Celsius, preferably about 2 to 7 degrees Celsius). In the range of The pressure sensitive adhesive may not only be applied directly to the film, but may also be applied to ink or other coatings on the film. According to one approach, the pressure sensitive adhesive remains attached to the continuous lid layer even after the lid layer has been repeatedly opened and resealed. In other configurations, the pressure sensitive adhesive may be a low tack adhesive or a fastener. Selectable low-tack adhesives or fasteners are disclosed in US Pat. No. 5,077,052 filed Feb. 25, 2011, which is incorporated herein by reference. Low tack adhesives allow unwanted surfaces to have relatively low tack, while desirable surfaces have good bond strength (eg, do not peel off flexible film) , Similar surfaces should have a relatively good tack or self-adhesive bond strength to keep the soft packaging or pouch closed, and the package can be opened or peeled by hand Various suitable materials may be included. When low tack adhesives are used in packaging, pressure sensitive adhesives can adhere to the lid layer, film, or both when the lid layer is pulled upward, i.e., opposite the film, and the package is opened. Expected to have sex. In one exemplary embodiment, during opening of the package, a portion of the low tack adhesive (PSA) remains attached to the film and another portion of the low tack adhesive (PSA) is a continuous lid. It remains attached to the layer.

  In addition, the initial seal (before opening) of the package may also be substantially airtight over time (eg, providing a gas and moisture barrier). The initial seal may be made with a package end seal or longitudinal seal and a continuous lid layer and pressure sensitive adhesive that are subsequently laminated to cover the cuts that define the package opening.

  In one configuration, a resealable flexible film wrap includes a cut film with the edges sealed longitudinally to form a sleeve. A first end seal of the package or sleeve is provided at a first end of the package and substantially transverse to the longitudinal seal. The second end seal of the package or sleeve is placed at a second end of the package, substantially transverse to the longitudinal seal. In some configurations, the first and second end seals may be peelable or non-peelable. As used herein, a peelable seal is one in which the sealant layers are separable from each other, and a non-peelable seal includes a sealant that is bonded so that the sealant layers do not separate, i.e., a destructive seal. The film between the first and second end seals defines the interior of the package. The flexible film has a label or other continuous lid layer that is continuously applied with a pressure sensitive adhesive so as to cover the cuts in the film and along the longitudinal axis of the package. The label can be used to reseal or reseal the package when the contents are removed from the package. In addition, after removing a portion of the contents of the package, the film may be rolled or twisted to compress the package, and then a label is applied over it to reseal or reseal the package. It may be sealed. Then, by rounding or twisting the package, the size of the package can be reduced according to the amount of contents remaining in the package.

  According to one approach, the pressure sensitive adhesive has a peel force between the film and the label that is greater than the force required to separate the sides of the cut. The label may extend sufficiently longer than the score line so that the package can be resealed with a pressure sensitive adhesive attached between the label and the film. Various incision patterns are envisioned and some configurations are described herein. The incision may be provided generally longitudinally from the first end of the package to the second end of the package. In addition, the cut may be straight, arcuate or a combination thereof. Further, the cut may include shapes such as a T shape, a tear shape, a circle, etc., to name a few examples. In one configuration, the notch may define an opening at or near the first end of the package. In some embodiments, the score line forms a loop between the end seals. In other embodiments, the incision may begin at the outer edge of the first end seal, extend rearward, and merge to form a single incision line. In one configuration, the score line does not extend beyond the second end seal. In yet another configuration, the cut may extend into and / or through the end seal. The seal area can be formed by a heat seal bar, so that the heat used to form an end seal or longitudinal seal on the package will cut the cut even if it extends into the heat seal area before the seal is formed. The polymer may be melted sufficiently to prevent it from being torn beyond the heat seal.

  The end of the score line near the second end of the package may be configured to prevent or prevent the film from being further torn beyond the score line. The end of the score line near the second end of the package is J hook, double J hook, smiley, shepherd hook, teardrop, and double teardrop (relatively large at either end of the package Providing a packaging opening) or the like. In one example, the score line includes an opening, such as a tear-shaped opening, near the first end of the package, into a single score line that runs generally longitudinally toward the second end of the package. Extends and provides an opening inside the package. In other configurations, the incision includes an opening, such as a teardrop-shaped opening, near the first end of the package and two generally straight sections extending therefrom and extending longitudinally through the package. The generally straight portions may be parallel and may be separated by about 5 mm or less. The incision may also include a narrow arcuate section joining two generally straight portions near the second end. In one configuration, the label extends beyond the first end seal, at least to the leading edge of the package.

  As described below, a second score line or region, such as a tab notch, may be added to the package to define a tab portion, such as a film / label laminate tab. This second score line or region may be provided near the distal side of the first end seal of the sleeve. In addition to this, a plurality of second cut lines or cut areas can be added to serve an appropriate function of the tab portion. Multiple score lines can be added to help with issues related to element alignment variations.

It is a top view of a part of continuous body of a flexible film packaging blank. It is sectional drawing along line 2-2 of the laminate structure of the flexible film packaging blank of FIG. It is a figure which shows another structure of a laminate structure. FIG. 2 shows a flexible film packaging formed from one of the flexible film packaging blanks of FIG. 1. It is a figure which shows the flexible film packaging of FIG. 4 of the state opened to the middle. FIG. 6 is a cross-sectional view of the flexible film package of FIG. 4 taken along line 6-6. FIG. 7 is a cross-sectional view of the flexible film package of FIG. 4 taken along line 7-7. It is a top view of a part of another continuous body of a flexible film packaging blank. FIG. 6 is a plan view of another flexible film package. It is a top view of a part of another continuous body of a flexible film packaging blank. It is a top view of a part of another continuous body of a flexible film packaging blank. It is a top view of a part of another continuous body of a flexible film packaging blank. FIG. 12 shows a flexible film packaging formed from one of the flexible film packaging blanks of FIG. 11. It is a figure which shows the flexible film packaging of FIG. 12 of the state opened to the middle. FIG. 6 is a side view of another flexible film package. FIG. 15 is a cross-sectional view of the package of FIG. 14 in a closed state. It is sectional drawing of the packaging of FIG. 14 of the state opened. It is the schematic of the formation method of the package of FIG. It is a top view of a part of another continuous body of a flexible film packaging blank. FIG. 19 illustrates a flexible film package formed from one of the flexible film packaging blanks of FIG. 18. It is a figure which shows a part of flexible film packaging of FIG. 19 of the state opened to the middle. It is a top view of another flexible film packaging blank. It is a top view of another flexible film packaging blank. It is a side view of a flexible film packaging. FIG. 22B is a side view of the flexible film package of FIG. 22B in an unsealed state. It is a top view of another flexible film packaging blank. It is the schematic of the process of attaching a cover layer to a flexible film. It is sectional drawing of the laminated structure of the flexible film of FIG. It is sectional drawing of another laminated structure. It is the schematic of another process of attaching a cover layer to a flexible film. It is a schematic side view of the offline process which forms the continuous body of a flexible film packaging blank. It is a schematic side view of the in-line process which forms the continuous body of a flexible film packaging blank. It is a side view of another structure of flexible film packaging. It is a figure which shows the flexible film packaging of FIG. 29 of the state opened to the middle. FIG. 5 is a perspective view of another flexible film package. FIG. 5 is a perspective view of another flexible film package. FIG. 5 is a perspective view of another flexible film package. FIG. 5 is a perspective view of another flexible film package. FIG. 35 is a perspective view of the flexible film packaging of FIGS. 31-34 in an unsealed state. FIG. 35 is a perspective view of the flexible film packaging of FIGS. 31-34 in an unsealed state. FIG. 35 is a perspective view of the flexible film packaging of FIGS. 31-34 in an unsealed state. FIG. 35 is a perspective view of the flexible film packaging of FIGS. 31-34 in an unsealed state. FIG. 33 is a perspective view of the flexible film package of FIGS. 31 and 32 as a configuration of a continuous pillow package before labels are attached and separated into individual packages. FIG. 33 is a perspective view of the flexible film package of FIGS. 31 and 32 as a configuration of a continuous pillow package before labels are attached and separated into individual packages. FIG. 33 is a perspective view of the flexible film packaging of FIGS. 31 and 32 as a configuration of continuous pillow packaging after an end seal is formed and a label is attached. FIG. 33 is a perspective view of the flexible film packaging of FIGS. 31 and 32 as a configuration of continuous pillow packaging after an end seal is formed and a label is attached. It is a top view of the continuous body of the film packaging with a notch | incision after forming an end seal with a sealing jaw. FIG. 5 is a schematic side view of a process for forming a flexible film package using a continuous lid label. FIG. 45 is a schematic side view of the sealing jaw taken along line AA of FIG. 44. FIG. 6 is a top view of another flexible film package. It is a perspective view of a flexible film packaging. It is a perspective view of a flexible film packaging. It is a perspective view of a flexible film packaging. FIG. 6 is a top view of another flexible film package. FIG. 5 is a perspective view of another flexible film package. Figure 2 shows a film cut pattern for flexible film packaging. Figure 2 shows a film cut pattern for flexible film packaging. Figure 2 shows a film cut pattern for flexible film packaging. Figure 2 shows a film cut pattern for flexible film packaging. Figure 2 shows a film cut pattern for flexible film packaging. It is a perspective view of the flexible film packaging of the state which is not opened. FIG. 58 is a perspective view of the flexible film package of FIG. 57 in an unsealed state. FIG. 6 is a perspective view of another flexible film package in a resealed or resealed state. It is a schematic side view of the process of forming a flexible film packaging using the continuous film and the label continuous with a notch. It is a schematic sectional drawing of a palm seal jaw. It is a perspective view of another flexible film packaging of the state opened to the middle. FIG. 4 is a perspective view of a flexible film package in a closed state. FIG. 4 is a perspective view of a flexible film package in a closed state. FIG. 4 is a perspective view of a flexible film package in a closed state. FIG. 4 is a perspective view of a flexible film package in a closed state. FIG. 4 is a perspective view of a flexible film package in a closed state. FIG. 4 is a perspective view of a flexible film package in a closed state. It is a perspective view of the flexible film packaging of the state opened to the middle. It is a figure which shows another example of the structure (break for packaging separation) of the tab part for flexible film packaging. It is a figure which shows another example of the structure (break for packaging separation) of the tab part for flexible film packaging. It is a figure which shows another example of the structure (break for packaging separation) of the tab part for flexible film packaging. It is a figure which shows another example of the structure (break for packaging separation) of the tab part for flexible film packaging. It is a figure which shows another example of the structure (break for packaging separation) of the tab part for flexible film packaging. It is a figure which shows another example of the structure (break for packaging separation) of the tab part for flexible film packaging. It is a figure which shows another example of the structure (break for packaging separation) of the tab part for flexible film packaging. It is a figure which shows another example of the structure (break for packaging separation) of the tab part for flexible film packaging. It is a figure which shows another example of the structure (break for packaging separation) of the tab part for flexible film packaging. It is a figure which shows another example of the structure (break for packaging separation) of the tab part for flexible film packaging. It is a figure which shows the example of the film outer periphery cutting pattern for flexible film packaging. It is a figure which shows the example of the film outer periphery cutting pattern for flexible film packaging. It is a figure which shows the example of the film outer periphery cutting pattern for flexible film packaging. It is a figure which shows the example of the film outer periphery cutting pattern for flexible film packaging. It is a figure which shows the example of the film outer periphery cutting pattern for flexible film packaging. It is a figure which shows the example of the film outer periphery cutting pattern for flexible film packaging. It is a figure which shows the example of the film outer periphery cutting pattern for flexible film packaging. It is a figure which shows the example of the film outer periphery cutting pattern for flexible film packaging. It is a figure which shows the example of the film outer periphery cutting pattern for flexible film packaging. It is a figure which shows the example of the film outer periphery cutting pattern for flexible film packaging. It is a figure which shows the example of the film outer periphery cutting pattern for flexible film packaging. It is a figure which shows the example of the film outer periphery cutting pattern for flexible film packaging. It is a figure which shows the example of the film outer periphery cutting pattern for flexible film packaging. It is a figure which shows the example of the film outer periphery cutting pattern for flexible film packaging. It is a figure which shows the example of the film outer periphery cutting pattern for flexible film packaging. It is a figure which shows the example of the film outer periphery cutting pattern for flexible film packaging. It is a figure which shows the example of the film outer periphery cutting pattern for flexible film packaging. It is a figure which shows the example of the film outer periphery cutting pattern for flexible film packaging. It is a figure which shows the example of the film outer periphery cutting pattern for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a figure which shows the example (the rear end of a tab, etc.) of the cutting pattern of the film weak line for flexible film packaging. It is a top view of the example of a flexible film packaging provided with the combination of the perimeter cut and the cut pattern of a weak line. It is a top view of the example of a flexible film packaging provided with the combination of the perimeter cut and the cut pattern of a weak line. It is a top view of the example of a flexible film packaging provided with the combination of the perimeter cut and the cut pattern of a weak line. It is a top view of the example of a flexible film packaging provided with the combination of the perimeter cut and the cut pattern of a weak line. It is a top view of the example of a flexible film packaging provided with the combination of the perimeter cut and the cut pattern of a weak line. It is a top view of the example of a flexible film packaging provided with the combination of the perimeter cut and the cut pattern of a weak line. It is a top view of the example of a flexible film packaging provided with the combination of the perimeter cut and the cut pattern of a weak line. It is a top view of a series of front panel parts for flexible film packaging. It is a top view of a series of front panel parts for flexible film packaging. It is a top view of a series of front panel parts for flexible film packaging. It is a top view of a series of front panel parts for flexible film packaging. It is a top view of a series of front panel parts for flexible film packaging. It is a top view of a series of front panel parts for flexible film packaging. It is a top view of a series of front panel parts for flexible film packaging. It is a top view of a series of front panel parts for flexible film packaging. It is a top view of a series of front panel parts for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. FIG. 6 shows another film cut pattern for flexible film packaging. It is a perspective view of the example of a vertical flexible film packaging with a gusset. It is a top view of the example of a vertical flexible film packaging. It is a top view of another example of a vertical flexible film packaging with a gusset. It is a top view of another example of a vertical flexible film packaging. It is a top view of another example of a vertical flexible film packaging with a gusset. It is a top view of another example of a vertical flexible film packaging. It is a top view of a part of vertical type flexible film packaging blank.

  Referring first to FIG. 1, a continuum 10 of soft packaging blanks is shown. The continuous flexible film web 12 has a width and a longitudinal axis along the length of the package formed therefrom. An elongate or continuous lid layer 14 is continuously formed into a portion of the width of the continuous flexible film web 12 along the longitudinal length of the packaging blank. For example, the continuous lid layer 14 may be applied along substantially the entire longitudinal axis of the continuous flexible film web 12. A pressure sensitive adhesive 18 (FIG. 2) is disposed between the continuous flexible film web 12 and the continuous lid layer 14. The pressure sensitive adhesive 18, like the continuous lid layer 14, is continuously applied between the continuous film web 12 and the continuous lid layer so that there is no pressure sensitive adhesive between these two layers. There is no area. When the cuts 16 are formed in the continuous flexible film web 12 and then the continuous lid layer 14 is pulled away from the continuous flexible film web 12, the opening of the package is formed.

  More specifically, the notch 16 can be formed in the flexible film 12 to define the opening 36 of the package when the flexible film package 5 (FIG. 5) is opened for the first time. The package opening allows the consumer to easily touch the product in the package 5. As described above, the cuts 16 can be formed in various processes, such as die cutting, laser forming, or other processes that impair the integrity of the film. See, for example, US Pat. The cut 16 can be formed on the inner surface or the outer surface of the flexible film. In addition, the incision 16 may be provided halfway through the thickness of the flexible film (cutting line with a halfway depth) or may penetrate through the entire thickness of the flexible film (the depth is reduced). The piercing line is good. In addition, the cuts 16 may have various widths and depths. The incision 16 may be formed before the continuous lid layer 14 is attached or fused to the flexible film 12 or after the elongated continuous lid layer 14 is attached to the flexible film 12. Good. If the cut 16 is formed after applying the continuous lid layer 14, the cut 16 may be formed through the flexible film 12 (from the inner surface) and into the pressure sensitive adhesive 18. According to one technique, the cut 16 may be formed through the flexible film 12 and the pressure-sensitive adhesive 18 to the middle of the continuous lid layer 14.

  In addition to the notches 16 that later form the packaging opening 36 (FIG. 5), the continuous flexible film web 12 may also have a tab notch 15 (FIG. 1) formed therein. Good. The tab cut 15 can be formed in the same manner as the cut 16. The tabs cut 15 may be disposed on the continuous flexible film 12 in the region to which the continuous lid layer 14 is attached. As will be described in more detail below, a tab cut 15 separates a portion 38 of the flexible film from the remaining portion of the continuous flexible film web 12 so that a continuous lid layer 14 is attached to the end of the film wrapping. Together with this, the tab portion 40 can be formed. In the exemplary configuration of FIG. 1, the tab cut 15 includes a series of arcuate die cuts so that the arcuate portion 38 of the flexible film is separated from the remainder of the continuous flexible film web 12. Is done. In addition, as will be described in more detail below, the tab cut 15 includes a series of cut lines that do not require precise calibration of the longitudinal alignment of the continuous flexible film web with the seal bar; Includes separation cuts or knife cuts that form or separate individual film packages 5 from a continuum of flexible packages 10. In fact, as described below, the tab cuts 15 are formed so as to intersect the knife cut or separation cut 44 that is later engraved in the laminate when individual packages are formed.

  In one exemplary embodiment, the cuts 16 and tab cuts 15 are formed after the continuous lid layer 14 is attached to the flexible film web 12. In such a configuration, the cut 16 may extend through the entire depth of the flexible film 12 and possibly over a portion of the pressure sensitive adhesive 18. It is also envisioned that the incision 16 extends slightly into the continuous lid layer 14, but the cut 16 is in the continuous lid layer 14 to such an extent that the integrity of the barrier properties of the continuous lid layer 14 is impaired. Does not extend. Various cutting depths are also assumed for the tab cutting 15.

  The film prior to making the cut (i.e., making the cut before applying the lid layer) can also define a tear line to form an opening in the pillow package when the label is pulled backwards. . The incision 16 can maintain the sealed state of the flexible film package prior to opening, in which case the flexible film 12 is not incised through the entire depth. Alternatively, the incision 16 may extend through the flexible film 12, in which case the continuous lid layer 14 substantially provides a seal prior to opening the flexible package for the first time.

  Various configurations of the incision 16 are assumed, and several examples will be described herein. The specific incision configuration utilized for certain flexible film packaging includes the product being packaged, whether structural support is incorporated into the flexible film packaging, and available manufacturing equipment, and other Can depend on factors. According to one approach, the notch 16 defines a packaging opening that can touch at least 70 percent of the product in the flexible film package when the package is first opened. More particularly, when the elongate lid layer 14 is peeled to the end of the cut 16 and the entire cut 16 is exposed, the user can touch (ie, remove from the package) at least 70% of the product in the package. It is supposed to be possible. This allows the consumer to touch a substantial portion of the product in the flexible film package immediately after opening for the first time. According to yet another approach, the notch 16 defines a packaging opening that can touch at least 90% of the product in the package. In another configuration, the cut 16 defines a packaging opening that can touch at least 50% of the product in the package.

  The cut line 16 shown in FIG. 1 has a spherical or arcuate portion 30 that extends into two generally straight sections 32 and ends in an end 34 having a hook in the illustrated example. The hook, i.e. the J-shaped end, helps to prevent the incision 16 from propagating, i. In addition, depending on the product contained in the flexible film 12, the arcuate portion 30 of the notch 16 allows the packaging opening to easily remove a substantial portion of the product contained therein, It is large enough to touch this.

  Looking briefly at FIG. 8, another continuum 110 of flexible packaging blanks is shown. The soft wrap blank continuum 110 is similar to the soft wrap blank continuum 10 and has a continuous flexible film web 112 with an elongate or continuous lid layer 114. The main difference between the flexible package continuum 110 is a notch 116 and a notch 115 for tabs. The incision 116 includes a spherical or arcuate portion 130 that is slightly narrower than the portion 30 and also includes generally long straight sections 132 that end inwardly toward each other and include hooks that extend away from the center of the package. To 134. The packaging opening made by the cuts 116 can be slightly narrower than the packaging opening made by the cuts 16. In addition, the tab cuts 115 include a series of straight cut lines that are configured to intersect with knife cuts 144 that are subsequently made when individual packages are formed. FIG. 8 also shows an opening or peg hole 154 that is formed through the lid layer 114 and the flexible film 12 so that, for example, individual packages can be suspended for a display. May be.

  The flexible film webs 12, 112, as suggested above, may include several layers including, for example, PET layers, OPP layers, PE layers, MET OPP layers, PP layers and / or PLA layers, to name a few. A laminate having a material layer may be used. These layers may be bonded by an adhesive or extrusion process. Alternatively, the flexible film web 12 may be a single layer polymer, i.e. a monoweb. Because the flexible film package is at least partially hermetically sealed, the flexible film web preferably provides a gas and moisture barrier. According to one approach, the thickness of the flexible film may be from about 1 mil to about 5 mils (100-500 gauge, 0.0254-0.127 mm). According to other techniques, such as those used in extrusion lamination, the thickness of the flexible film web 12 is about 0.47 mils to about 0.98 mils (47-98 gauge, 0.012 mm to 0.025 mm). It may be. In one exemplary embodiment used in extrusion lamination, the thickness of the flexible film web 12 is from about 0.67 mil to about 0.71 mil (67-71 gauge, 0.017 mm to 0.018 mm). May be. In the above example of extrusion lamination, the extrudate increases the thickness of the flexible film from about 0.4 mils to about 1.2 mils (40-120 gauge, 0.01-0.03 mm). The thickness of the film can depend on the desired barrier to gas, moisture, light and the desired level of structural integrity, the desired depth of the score line, and available manufacturing equipment.

  The flexible film webs 12, 112 may be heat fusible copolymers. Depending on the configuration, the heat fusible polymer forms a seal, for example, between 50 and 300 degrees Celsius. The flexible film web 12 may also be a pressure seal film. For example, the pressure seal film can form a seal at a pressure of, for example, between about 0.7 and 7.0 kg / cm. According to one approach, the pressure seal film forms a seal at about 5.6 kg / cm.

  In addition to the various laminate layers described above, additional laminate layers such as sealants, reinforcements, inks, release layers, etc. may be incorporated into the laminate structure. For example, a sealant layer can be added to help form a seal that surrounds the product. According to one technique, the sealant layer may be provided on the film surface (inward surface) facing the inside of the package. The sealant layer may be various polymer sealants, for example, a heat-activated polymer sealant layer such as ethylene vinyl acetate (EVA), an ionomer resin (for example, sold under the trade name SURLYN from DuPont), Metallocene, organoclay and others. In one example, a seal such as a joint seal is formed using a heat activated sealant layer. In addition, low temperature sealants and pressure sealants can also be used in the configurations disclosed herein. If the product in the flexible film package is a food product, it should be noted that a food sealant will be used.

  In one configuration, the film is increased in hardness by adding a stiffener to the flexible films 12,112. Such a reinforcing material may be used in addition to the hardness adjustment made possible by changing the thickness or density of the laminate layer. Such a reinforcing material can be added as a component of an extruded film or as a separate layer. For example, a laminate layer such as a polyamide polymer (such as nylon) can be included in the laminate film structure of the flexible film web 12. According to one approach, nylon may be added as a laminate layer that is held to the rest of the film structure by an adhesive. Further, in one configuration, a nylon layer may be placed between the other layers so that the other layers of the flexible film are attached to both sides of the nylon layer (ie, the tie layer). become. In one configuration, for example, a film structure, such as a 2 mil structure, may include a nylon layer of about 6-10% of the film thickness, ie, about 0.003-0.005 mm. In one approach, the nylon layer may comprise about 8% of the film thickness. According to another approach, the nylon layer may occupy about 0.004 mm.

  As described above, the ink layer may be formed as an additional laminate layer in the laminate. For example, one particular laminate can include ink and primer disposed between other film layers, such as a PET layer and an OPP layer. Alternatively, the ink may be a surface printed layer with an over-lacquer as used in monoweb. Another additional layer is the metallization layer as described above.

  In some configurations, a release layer may be incorporated to make the laminate structure more flexible and increase the number of pressure sensitive adhesive options. For example, when a release layer is incorporated, the peel strength of the pressure sensitive adhesive used for the packaging may be low. The release layer may be a homopolymer such as OPP. According to one approach, the release layer may also be an overlacquer that is printed or extruded onto the film, thereby forming a barrier between the pressure sensitive adhesive and the flexible film, which is Provides consistent opening characteristics.

  According to one approach, the elongate lid layer 14 is continuously applied along the flexible film 12, so that the continuous lid layer 14 is one of the ones when the flexible film wrap 5 is formed. Extends from one end to the other. In FIG. 4, the continuous lid layer 14 extends from a first end seal 26 to a second end seal 28. Furthermore, the lid layer 14 extends only over a part of the width of the flexible film 12 forming the film packaging 5. However, although the continuous lid layer 14 extends over the entire width of the package, it is also conceivable that the length of the flexible film 12 extends over only part of it. More particularly, the continuous lid layer 14 preferably does not cover both the full width and the full length of the package. The continuous lid layer 14 is disposed only in a part of one direction (that is, length or width), and is continuously disposed in the other direction. According to one approach, the continuous lid layer 14 is continuously deposited along one axis of the flexible film, and one along the axis perpendicular to the continuously deposited axis. It is attached only to the part. Therefore, the flexible film package 10 may have an elongated lid 14 that extends over the entire length of the package and only partially over the width, or extends over the entire width of the package and is partially over the length of the package. May have an elongate lid 14 that only extends.

  FIG. 2 shows a cross-sectional view of the flexible film along line 2-2, depicting the pressure sensitive adhesive between the flexible film 12 and the elongated lid layer 14. Although the elongate lid layer 14 is generally disposed in a central position in FIGS. 1-2, the elongate lid layer 14 may be off-center, i.e., biased over the width or length of the package. FIG. 3 shows the elongate lid layer 14 disposed along the edge of the flexible film 12.

  The elongate lid layer 14 is adhered to the flexible film 12 and covers the cuts 16 so that the flexible package 5 can be easily opened by hand. In one embodiment, the elongate lid layer 14 can be formed such that the flexible package 5 has a tab portion 40. More particularly, the tab portion 40 (FIG. 5) extends through the elongate lid layer 14 and a portion of the flexible film, extending to the distal side of the end seal, such as the end seal 26, of the flexible film. It may be formed in an unattached area, so that the user can grasp and peel the upper layer of the peelable seal, ie the elongated lid layer 14.

  In one configuration, the flexible film 12 has a first edge 20 and a second edge 22. The edges 20, 22 may be merged to form a longitudinal seal such as a palm seal 24, as shown in FIGS. 4-6, from the first end seal 26 to the second end. Extends to the seal 28. The longitudinal seal may also include a wrap seal. The longitudinal seal may extend over the length of the package, as shown in FIGS. However, the package may be configured such that the longitudinal seal extends along the width of the package.

  FIG. 1 shows one way of forming the end seals 6, 28. FIG. 1 generally illustrates a method of forming first and second end seals 26, 28 (shown in FIGS. 4 and 5) of a package by means of a seal bar region 42 (shown in broken lines). In one exemplary approach, continuous flexible film webs 12 are wound around a molding machine, such as a molded tube, molding collar, or otherwise, together to seal edges 20,22. To match. At this time, if the continuous flexible film web 12 also wraps the product to be packaged therein, the end seals 26, 28 may also be formed in the package. The end seals 26, 28 may include upper and lower film portions 48, 50, as shown in FIG. 7, and may have front and back portions depending on the configuration of the flexible film packaging. May be included.

  In addition, FIG. 1 illustrates where the separation cut 44 can be formed between the end seals 26, 28, which is also indicated by a dashed line. Separation cuts 44 separate individual packages 5 from the flexible film packaging continuum 10 and cut the flexible film web 12, the continuous lid layer 14, and the pressure sensitive adhesive 18. In one example, this separation point occurs between the second end seal 28 of the leading package and the first end seal 26 of the subsequent package.

  In one exemplary approach, the ends of the two packaging flexible films disposed adjacent to the first and second end seals 26, 28 are not sealed. The free ends 46 are gripped by the user because they are not sealed together. Therefore, to open a package, particularly a package that does not have a re-sealable lid, the user can grasp the end seal of the flexible film by grasping the free ends adjacent to the top and bottom of the end seal. Can be pulled apart. More particularly, some packaging breaks a substantially airtight film-to-film seal, also called a destructive seal, by the consumer pulling the free end apart to form an end seal. In other configurations without a free end, the user may choose to break the end seal by pulling the front and back panels (or upper and lower panels) in the vicinity of the seal away from each other. Both methods of opening such packages often break permanent or primary seals and often cannot be resealed.

  End seals 26, 28 and longitudinal seal 24 are film-to-film seals and can be considered primary seals, often permanent or destructive seals. The lid layer 14 also forms a seal with the flexible package 5 and can be considered as a secondary seal. The secondary seal is resealable and is generally not destructive. In one exemplary embodiment, the peel force required to separate the primary seal (primary peel force) is greater than the peel force required to separate the secondary seal (secondary peel force).

  In one example, the flexible film package 5 has a primary seal that includes end seals 26, 28 and a longitudinal seal 24 and a secondary seal formed by the lid layer 14 over the length of the flexible film package 5. . The secondary seal is formed in part by a pressure sensitive adhesive 18 disposed between the continuous lid layer 14 and the flexible film 12.

FIG. 7 is a cross-sectional view taken along line 7-7 of FIG. 4 and shows a portion of the first end seal 26 of the flexible film 12. A continuous lid layer 14 and pressure sensitive adhesive 18 are also disposed near the first end seal 26. At or near this point, the user grasps the tab portion 40 (FIG. 5) and pulls up to separate the continuous lid layer 14 from the flexible film 12 and expose the packaging opening 36. In order not to interfere with the primary seal between the upper and lower portions 48, 50 of the first end seal 26 when the continuous lid layer 14 peels from the flexible film 12, the primary between them The peel force is greater than the secondary peel force required to separate the continuous lid layer 14 from the flexible film 12. More particularly, if the primary and secondary peel forces are equal, the user may interfere with or adversely affect the primary seal that may not be resealable. According to one approach, the peel strength of the primary seal is 200 to 300 grams / inch ² greater than the peel force of the secondary seal. In other configurations, the peel force difference may be 25-400 grams / inch ² .

  As suggested above, many consumers have already opened the package by breaking the primary seal at or on the edge of the package. As shown in FIG. 5, the flexible film wrap 5 allows the user to lift the continuous lid layer 14 in the vicinity of the end seal from the end seal 26 to break the end seal 26. It is configured. In addition, the flexible film 12 has tab cuts 15 formed therein so that the user can grip the continuous lid layer 14 without contacting the pressure sensitive adhesive 18. I can shin. For this purpose, the peeling force of the primary and secondary seals may be configured so that the user can easily open the package without hindering the primary seal. In addition to this, the flexible packaging 5 may have a tab portion 40 that can be easily opened.

  As mentioned above, the free end 46 of the package is adjacent to the end seal, but these are generally not sealed. More particularly, the free end 46 of the package may be in an unsealed area of the film laminate and, according to one approach, is distal to the end seal of the package, whereby the user can It can be opened by grasping and peeling a portion 38 of the upper layer or portion 48 of the layer 14 continuous with the film.

  As described above, the tab portion 40 may be formed by a combination of the tab cut 15 and the separation cut 44. The front end of the flexible film wrap 5 is defined by a separation cut 44, which may also be near the location of the tab portion 40. According to one exemplary approach, the user can grasp the edge and begin opening the package. Specifically, the consumer can grip the free end 46 of the upper portion 48 of the flexible film 12 and the portion of the continuous lid layer 14 near the front end. In order to assist the user to lift or remove the continuous lid layer 14 from the flexible film 14, a tab cut 15 is provided on one of the free ends 46 near the upper portion 48 of the end seal 26. It may be formed. Therefore, a portion 38 of the flexible film can be separated from the rest of the flexible film 12 at one of the tab cuts 15. The portion 38 covers the pressure sensitive adhesive 18 disposed under the continuous lid layer 14 and can provide the user with a non-stick tab or tab portion 40. More particularly, the portion 38 is provided by separating the flexible film portion 38 from the remainder of the flexible film 12 with a tab cut 15.

  The cutout 52 shown in FIG. 5 shows where the portion 38 of the flexible film 12 has been peeled away from the remaining portion of the flexible film to cover the pressure sensitive adhesive 18 on the surface of the tab portion 40. Yes. As will be described in more detail below, the tab cut 15 may be arranged to partially bite into the front end seal 26 of the package 10, and the tab cut 15 is just the front end of the package 10. It may extend along the seal or may only be located outside the front end seal 26. In addition, if a series of tab cuts 15 are used, the tab cuts 15 may have lines arranged at all three of these positions. If the tab cut 15 slightly bites into the front end seal 26, a small portion of the end seal 26 is included in the portion 38 that has been peeled from the flexible film 12. However, if the tab cut 15 is greatly digged into the front end seal 26, a force within the seal causes a large portion of the front end seal 26 to be peeled away therefrom and a portion 38 of the flexible film 12. There is a high possibility that it will not be possible to form. Therefore, the configuration of the portion 38 that is peeled from the flexible film 12 may depend on the configuration of the separation cut, the tab cut 15, the relative position of the tab cut 15, and the front end seal It can also depend on the strength of 26. In one exemplary embodiment shown in FIG. 1, the central arcuate score line of tab notch 15 generally defines the rear edge periphery of tab portion 40. This is the largest of the tab cuts 15 that is not welded by the end seal 26 in the sealing area 42. As described above, various configurations can be adopted for the tab portion 40, the tab cut 15 and the flexible film portion 38, and a few examples are disclosed in this specification.

  The separation notch 44 defines the leading edge of the tab portion 40 and the leading edge of the flexible film package 5, and also defines the trailing edge of another flexible film package 5. Therefore, when the leading edge of the flexible film package 5 is provided with a die cut or knife cut assembly, the subsequent flexible film package 5 is provided with a leading edge.

  The pressure sensitive adhesive 18 is disposed or applied between the flexible film 12 and the long lid layer 14 and can be of various strengths and compositions. As described above, examples of pressure-sensitive adhesives include cold forming adhesives, hot melt adhesives, cold seal adhesives, natural or synthetic latex adhesives, low-tack adhesives, and ethylene vinyl acetate (EVA). , Acrylic adhesives (aqueous or solvent-based acrylic adhesives), styrene block copolymer adhesives, butyl rubber adhesives, silicone rubber adhesives, natural rubber adhesives, nitrile adhesives, acrylic emulsion adhesives, and combinations thereof. Further, the pressure sensitive adhesive may be applied by extrusion, coextrusion, printing or a combination thereof. According to one approach, the bond strength of the pressure sensitive adhesive is greater than the strength required to tear or separate the cut 15. In such a configuration, the user can pull up the long lid layer 14 to expose the packaging opening, remove the desired amount of product, and then re-seal the packaging using a pressure sensitive adhesive outside the notch. According to one approach, the pressure sensitive adhesive may be of various thicknesses. For example, the pressure sensitive adhesive can be about 0.2 mils to 1 mil thick, and can be much thicker.

  Referring now to FIG. 9, the flexible film package 205 includes a flexible film 212 on which a continuous lid layer 214 is disposed. The flexible film wrap 205 includes a notch 216 and a tab notch 215 disposed near the first end seal 226. In one approach, the notch 216 is generally U-shaped and has an arcuate portion 230 and two generally long straight portions 232 that end at an end 234 near the end seal 228. Tab portion 240 is near end seal 226 and is partially defined by cuts 215 that include a plurality of repetitive straight cut lines through flexible film 212. The leading and trailing edges of the flexible film package 205 are straight and do not have an arcuate portion like the package of FIGS. As shown in FIG. 9, a die cut 260 is shown penetrating at least the continuous lid layer 214. According to one approach, the die cut 260 is formed through the continuous lid layer 214, pressure sensitive adhesive 218, and flexible film 212. Thus, tab portion 240 is formed in the vicinity of first end seal 226 and is arcuate defined by die cut 260 through continuous lid layer 214 and cut 216 through flexible film layer 212. Has a leading edge. As shown in FIG. 9, a pair of cut areas having an oblique parallel line pattern may be provided near the outer portion of the tab 240. According to one approach, the die cut 260 extends into the diagonally parallel cut pattern 256. The continuous lid layer 214 can be easily separated from the flexible film 212 at the rear edge of the tab portion 240 by the oblique parallel line-shaped cut regions 256.

  The flexible film packaging continuum 310a shown in FIG. 10A is similar to the flexible film packaging blank 205, except that the tab portion of the flexible film packaging continuum 310a does not have an arcuate leading edge and is straight. A leading edge is included. The continuous body 310a of the flexible film packaging includes a flexible film 312a, and a continuous lid layer 314a is disposed thereon. The flexible film 312a has a notch 316a to be a packaging opening and a tab notch 315a that helps form the tab portion 340a. The arcuate tab cut 315a extends into the leading side and into the free end of the subsequent package to allow for variations in alignment between the package element and the separation cut 344a. More specifically, the tab cut 315a is precisely calibrated with the separation cut 344a employed in the longitudinal alignment of the continuous flexible film web between the leading and subsequent package end seals. I don't need that. In addition to forming the arcuate tab cut 315 by a similar cut forming mechanism as forming the cut 316a, the arcuate cut may also be formed by a separation cut. As shown in FIG. 10B, the flexible film wrapping continuum 310b will later have the same appearance as the wrapping continuum 310a, but the separation cut or knife cut 344b will be distant from the front end seal of the film. You may form by comprising so that the arc-shaped cut | interruption 345b may be formed in the area | region which is not sealed by the side. 10A and 10B both provide relatively wide tab portions 340a, 340b. The tab portions 340a and 340b may have an arcuate side, a straight front edge, and a rear edge.

  Another exemplary flexible film packaging blank series 410 is shown in FIG. A continuum 410 of flexible film packaging blanks includes a continuous flexible film 412, a continuous lid layer 414, and a packaging 405 (FIG. 13) from which the continuous lid layer 414 is subsequently formed. A notch 416 (shown in phantom in FIG. 12) that forms a packaging opening 436 when pulled up. The continuous lid layer 414 covers a part of the width of the flexible film 412 as in the above-described configuration. In addition, the flexible film packaging blank continuum 410 also includes a lid layer notch 456 provided on the lid layer 414. The lid layer notch 456 extends from the tab portion 440 (near the leading edge of the package), inwards into the packaging body and ends at the edge 458 of the continuous lid layer 414. The lid layer notch 456 may be provided to penetrate the entire depth of the lid layer 414, and the notch 456 may also be a pressure sensitive adhesive disposed between the continuous lid layer 414 and the flexible film 412. It may extend into the agent 418. The lid layer notch 456 assists the user in peeling the continuous lid layer 414 from the flexible film 412, which covers more area of the flexible film 412. In the case of packaging with a wide continuous lid layer 414, it may be difficult. The lid layer cut 456 forms a cutout 459 in the continuous lid layer 414 when a part of the lid layer 414 continuous with the tab portion 440 is pulled up from the film 412. Of the continuous lid layer 414, a portion 461 cut out from the remaining portion of the continuous lid layer 414 is directly bonded to the flexible film 412 disposed near the front edge of the package 460. In short, the lid layer cut 456 reduces the peel force required to pull up the continuous lid layer 414 from the flexible film 412.

  In addition to the cuts 416, tab cuts 415 are formed in the flexible film 12. Tab notch 415 (shown in phantom in FIG. 12) is from one package follower seal region 442 (which forms a rear end seal) to another package leading seal region 442 (which is a front end end). May form a seal). Therefore, the tab cut 415 extends at least partway in the free end of the package, positioned between the two seal areas 442 prior to separating the package. As shown in FIG. 12, the free end 446 is adjacent to both the leading edge 460 and the trailing edge 462. The leading edge 460 is adjacent to the tab portion 440 and forms the leading edge of the tab portion 440. In addition, the leading edge 460 is formed by a separation cut 444, which in this example is straight. Therefore, the tab portion 440 also has a straight leading edge. The linear separation cut 444 also forms a linear trailing edge 462 of the package.

  The tab portion 440 also has a portion 438 cut from the flexible film web 12 that covers the pressure sensitive adhesive 418 disposed on the surface of the continuous lid layer 414. As shown in FIG. 11, the tab cut 416 includes an arcuate line that intersects the seal region 442 that becomes the front end seal 426. Thus, when the tab portion 440 is pulled away from the flexible film wrap 405, the portion 438 is cut off from the flexible film 412 and covers the pressure sensitive adhesive that is adhered to the lid layer 414.

  In addition to the configuration having one longitudinal seal and two end seals, it is also envisioned that the flexible film package may have a three-way seal. According to one approach, such a package may have a permanent fold.

  FIG. 14 shows another flexible film package 500. According to one approach, the flexible film package 500 includes front and back film panels 520, 522, first and second end seals 502 and 504, and first end seal 502 to second end seal. A top seal 506, which is a longitudinal seal extending to 504, and a permanent fold 508. The flexible film 512 includes a long lid layer 514 disposed from the first end seal 502 to the second end seal 504.

  As shown in FIG. 15, the flexible film package 500 includes a pressure sensitive adhesive 518 disposed between the flexible fill 512 and the long lid layer 514. In addition, a cut may be placed between one of the front or back film panels 520, 522. According to one approach, the incision 516 is placed through the front panel 520 and the elongate lid layer 514 and the pressure sensitive adhesive 518 are placed thereon. Therefore, when the packaging opening 536 is created by pulling the front and back film panels 520, 522 away from each other, the cutout 525 defined by the notch 516 separates from the front panel 520 and adheres to the back panel 522. To do. More particularly, the top seal 506 may be formed between the front and back panels 520, 522, and a portion of the notch 516 may be disposed above and below the top seal 506. Therefore, when the cut 516 is separated, the cutout portion 525 of the front panel 520 that is sealed to the back panel 522 (via the top seal 506) is directly bonded thereto. When opened (shown in FIG. 16), the user can touch the product in the flexible film package 505, after which the user presses the pressure sensitive adhesive 518 under the lid layer 514 to place the back surface. By bringing the panel 522 and the cutout portion 525 into contact, the package 505 can be resealed.

  FIG. 17 schematically illustrates one method of manufacturing the flexible film package 505. A continuous lid layer 514 can be continuously disposed on the flexible film web 512. In such a configuration, the film may be formed into the shape of a package for filling the product using the forming or folding mechanism 578 and the seal between the packages and the separation breaks using the forming die 582. Can be formed.

  Referring to FIG. 29, another exemplary package 1305 is shown having a three-way seal. First and second side seals 1302, 1304 and a top seal 1306. The flexible film 1312 has a continuous lid layer 1314 from one side seal 1302 to the other side seal 1304. Indeed, the continuous lid layer 1314 extends from the first edge 1360 of the package 1305 to the second edge 1362. A score line 1316 is disposed in the flexible film 1312 below the continuous lid layer 1314, and the score line 1316 then forms a packaging opening 1336 (FIG. 30).

  The wrap 1305 further includes a notch 1386 penetrating the flexible film 1312 adjacent to the first edge 1360 near the tab portion 1340. The notch 1386 helps to separate a portion 1338 of the flexible film 1312 from the rest of the film. As shown in FIG. 30, the cutout 1352 can be seen where the portion 1338 is cut from the flexible film 1312. Portion 1338 covers the pressure sensitive adhesive 1318 on the continuous lid layer 1314 and provides a tab portion 1340 for gripping. In addition, a tab cut 1315 similar to the tab cuts described above may be formed at or near the side seal 1304, which is a portion of the portion 1338 that can remain adhered to the continuous lid layer 1314. Help with detachment.

  Other packaging configurations are shown in FIGS. FIG. 22A shows a packaging blank 810 that is formed into a package 805 (FIG. 22B). The packaging blank 810 includes a flexible film 812, as shown in FIG. 22A, having a continuous lid layer 814 and an arcuate score line 816 disposed thereunder. FIG. 22A also shows a tab notch 815 located near the tab portion 840. The packaging blank 810 of FIG. 22A is packaged where the fold lines 812, 823 are located, where the seal region 844a forms a lap seal 824, and where the seal region 844b forms side seals 802, 804. Shows how to form. The formed package 805 shown in FIG. 22B includes two side seals 802, 804 and a joint seal or lap seal 824. FIG. 22B also shows tab cuts 815 and opening cuts 816 (in broken lines).

  The package 805 shown in FIG. 22B can be formed from two different package blanks. For example, FIG. 22A can be formed into a package 805 having a wrap seal 824. Alternatively, FIG. 22D shows a packaging blank 810 that is similar to that shown in FIG. 22B, but formed into a broadcast 805 with a palm seal 24 rather than a lap seal. If a wrap seal is desired for the package 805, the free end 846 is placed only near the first end 860 of the flexible film 812, as shown in FIG. 22A. Alternatively, if a palm seal is desired for the package 805, the free end 846 is positioned near the first end 860 and the second end 862 of the flexible film 812, as shown in FIG. 22D.

  In addition, the package 805 includes an upper fold line 821 and a lower fold line 823. The upper fold line 821 may be formed in the lid layer 814 that is continuous with the flexible film 812. In addition, a cut 816 is formed in the flexible film 812, and when the continuous lid layer 814 is pulled up from the flexible film 812, a packaging opening 836 (FIG. 22C) is formed. As shown, the notch 816 forming the packaging opening may be positioned adjacent to the upper fold line 821 so that the lid layer 814 continuous with the fold line 821 is cut by the flexible film 812. Helps prevent further tearing beyond line 816. According to one approach, the end of the cut 816 is located at or near the fold line 821. Once the package 805 is opened, a package opening 836 can be formed by pulling up a portion 837 of the flexible film 812 with a continuous lid layer 814, as shown in FIG. 22C.

  As shown in FIGS. 22A and 22D, a continuous lid layer 814 is disposed near the free end 846, which can partially form a tab 840. A series of tab cuts 815 may be disposed in the vicinity of the tab portion 840 of the flexible film 812. In addition, one of the tab cuts 815 forms a portion 836 of the flexible film 812 that is cut from the rest of the film and covers a portion of the pressure sensitive adhesive 818 disposed on the tab portion 840. can do. Therefore, the tab portion 840 is separated from the free end 846 of the flexible film 812 and the remaining portion of the flexible film 812 (and the lower surface of the continuous lid layer 814). Part 838 (which remains adhered to the pressure sensitive adhesive). In order to reseal the package 805, the continuous lid layer 814 is formed by the pressure-sensitive adhesive 818 (FIG. 22C) placed between the continuous lid layer 814 and the flexible film 812 to form the packaging opening 836. Can be brought into close contact with the flexible film 812 around the notch 816.

  Another exemplary flexible film packaging blank continuum 610 is shown in FIG. A continuum 610 of flexible film packaging blanks is formed into individual flexible film packaging 605 (FIG. 19). The packaging blank continuum 610 includes a continuous flexible film 612, a continuous lid layer 614, a cut 616, and a tab cut 615. In one example, the cut 616 includes an arcuate portion that connects two generally long straight portions. Unlike the other examples, the notch 616 does not end with a tear stop, ie, a hook or J-shaped end configured to prevent or prevent tearing beyond the notch in which the notch 616 was formed. According to one exemplary approach, during opening of the package, the end 664 of the cut 616 continues to tear the flexible film 12 beyond the originally formed cut 616 so that the end 664 of the cut 616 is final. Unite. In such a configuration, the closed shape portion of the flexible film 612 is formed by a tear line or notch 616, which can be pulled up from the flexible film 612 during package opening. it can.

  A continuum of flexible film packaging blanks 610 is formed into individual packages 605 having a continuous flexible film 612 and a continuous lid layer 614 and an elongated lid layer 614 covering the flexible film 612. The The elongate lid layer 614 extends from the leading edge 660 to the trailing edge 662 of the package 605. The separation cut 644 is a straight cut in the example of FIG. In addition, a tab cut 615 having an arcuate shape is disposed adjacent the leading edge 660 of the package 605. Specifically, the tab cut 615 includes a series of spaced arcuate cuts. Tab notch 615 intersects seal region 642 that forms first end seal 626. Therefore, when the consumer grasps the tab 640 of the free end 646 and pulls it out of the package 605, the portion 638 of the flexible film 612 is cut off from the rest of the flexible film and is placed on the surface of the lid layer 614. A portion of the disposed pressure sensitive adhesive 618 is covered (FIG. 20).

  Another flexible film packaging blank 705 is shown in FIG. The blank 705 includes a flexible film 712 that has a notch 716 and a continuous elongate lid layer 714 arranged to cover it. The incision end 764 has a corrugated, arcuate incision 766 (similar to two adjacent “smile” shaped incisions) located near end 764, which has an incision 716 with an undulating arcuate shape. Prevent or prevent further tearing beyond the notch 766. Another arcuate cut 734 is positioned on the opposite side of the corrugated arcuate cut 766, thereby increasing the resistance that prevents the cut 716 from further tearing.

  Tab notches 715 are formed near the leading edge 760 of the flexible film 712 and include a series of repetitive straight lines. A tab cut 768 is formed through the edge layer 714 that is continuous with the flexible film 715. A tab cut 768 is positioned between the leading edge 760 of the package and the tough cut 715. In the packaging formed from the flexible film blank 705, the consumer can grip the tab portion 740, which is the first of the lines of the tab leading edge formed by the tab cut 768 and the notch 715. And has a tab trailing edge formed by a line intersecting the end seal region 742 of the end. In the tab portion 740, a portion of the flexible film 712 is cut from the rest of the flexible film and covers the pressure sensitive adhesive placed on the surface of the elongated lid layer 714 facing the film 712.

  As mentioned above, the packaging described herein can be formed in a variety of ways. For example, the package may be formed inline immediately before forming the package around the product, or may be formed immediately before filling the product with the package. As another example, the packaging may be formed off-line long before the product packaging. If the package is formed off-line, the package may be formed at a location remote from where the product is filled in the package.

  A continuous lid layer 914 may be attached to the flexible film web 912 before the flexible film is formed into a package. In the example shown in FIG. 23, a continuous lid layer 914 with pressure sensitive adhesive disposed on one side is attached to the flexible film web 912. The pressure sensitive adhesive is disposed on the surface of the lid layer 914 that contacts the flexible film 912. In one configuration, a continuous lid layer 914 is wound on a roll (such as a roll of tape) that is unwound and attached to the flexible film web 912. In order to facilitate the peeling of the pressure sensitive adhesive from the opposite surface of the continuous lid layer 914, a release layer may be formed on the opposite surface of the lid layer 914. It is also envisioned that the backing layer can be placed between the opposing surfaces of the lid layer 914 that is continuous with the pressure sensitive adhesive.

  In yet another configuration shown in FIG. 26, a pressure sensitive adhesive 1018 is applied separately from the continuous lid layer 1014. More specifically, instead of having a pressure sensitive adhesive already applied to the lid layer (or already applied to the film) prior to attaching the lid layer to the film, the pressure sensitive adhesive 1018 allows the lid layer to be When it is applied to the film, it may be applied in a separate application process. Therefore, after applying the pressure sensitive adhesive 1018 to the flexible film 1012, a continuous lid layer 1014 may be deposited thereon. In other configurations, the pressure sensitive adhesive 1018 may be applied to the continuous lid layer 1014 just prior to attaching the lid layer 1014 to the film 1012.

  24 and 26 show exemplary cross-sectional views of FIG. As mentioned above, the package may have release ink 970 incorporated therein. The release ink 970 may be disposed between the pressure sensitive adhesive 918 and the flexible film 912 as shown. Furthermore, as shown in FIG. 24, the release ink 970 may be disposed immediately below the continuous lid layer 914. In another configuration shown in FIG. 25, the release ink 970 may be disposed beyond the width of the continuous lid layer 914, and may be disposed over the entire width of the flexible film 912 depending on the configuration.

  FIG. 27 illustrates an example process 1100 for manufacturing a continuous series of flexible film packaging blanks off-line. In such a configuration, a continuous lid layer 1114 (which may be narrower than the width of the roll of flexible film web 1112) may be applied to cover a portion of the flexible film web 1112. it can. In addition, cuts can be formed at least in the flexible film 1112 by the cut forming mechanism 1172. As described above, the incision may be formed on the inner surface of the package, that is, the surface of the flexible film opposite to the lid layer. In addition, when the cut is formed in a continuous lid layer 1114 (partially or completely through the lid layer), as shown in the configuration of FIG. (Shown in phantom in FIG. 27) may be used. In addition, one incision forming mechanism 1172 can be drawn to form both an incision providing a packaging opening and an incision partially forming a tab portion, but these incisions are two separate incision forming mechanisms. It can also be formed.

  The laminate comprising the flexible film web 1112 with the cuts and the continuous lid layer 1114 can then be wound onto a laminate roll 1184. This laminate roll 1184 can then be fed into a packaging line and used to form individual packages filled with products. The packaging line may be in the same facility as the laminating device shown in FIG. 27, or the laminating device may be remote from the packaging facility.

  An example in-line process 1200 for producing a flexible film package is shown in FIG. According to one approach, a continuous lid layer 1215 is attached to a continuous flexible film 1212. The cut forming mechanism 1272 can form a cut on the inner surface of the package. As described above, when the cut is formed through the continuous lid layer 1214, the cut forming mechanism 1274 can be installed adjacent to the continuous lid layer 1214. Thereafter, the structure is such that the product can be wrapped around the product with a flexible film 1212 and a lid layer 1214 using a packaging or folding mechanism 1278, for example, a forming collar, or held thereafter. Can be wrapped. A filling mechanism 1277 can be used to fill the product 1280 into a partially formed web-like film. When the product 1280 is filled with the lid layer 1214 that is continuous with the flexible film 1212, another packaging or folding mechanism 1279 can be positioned immediately upstream of the packaging mold 1282 (both of these functions being combined). May be implemented with a simple molding mechanism and packaging mold). The packaging mold 1282 may include a cutting blade for forming a separation cut between packages, and may include a seal bar that forms an end seal of the package. In addition, the package mold 1282 can also form a longitudinal seal, but the longitudinal seal may also be formed independently. FIG. 28 shows a horizontal molding type, but the processes described herein can also be performed in a vertical type.

  In addition to these, these two schematic diagrams illustrate two exemplary methods for molding some of the packaging configurations described herein, but by adding other elements, Some of the packaging may be molded. For example, to make a package from packaging blank 705 (FIG. 21), this process can further include a tab cutting assembly.

  Referring now to FIGS. 31-34, various configurations of pillow packages, generally designated 10 ', are depicted therein. FIGS. 35-38 show the unwrapped package 10 'of FIGS. 31-34, respectively. Some of these packages are shown in various manufacturing stages in FIGS. In addition, other configurations of labels and score lines are shown in FIGS.

  Various configurations of the package 10 'can be formed by joining the opposite sides of the flexible film 12' to form a seal 14 '. According to one approach, the flexible film 12 'preferably has a sealant layer on its inner surface. End seals, such as rear and front end seals 18 ', 20', may also be provided. According to one approach, the front end seal 20 'may be a non-peelable seal, ie, a destructive seal that is considered bonded to the sealant layer and does not separate from each other when pulled, for example, FIG. , 34, 46-47. According to yet another approach, the front end seal 20 'is a peelable seal, i.e., a seal having a sealant layer that can be pulled apart or separated from each other, such as shown in Figs. In general, at least one of the package end seals can be a non-peelable heat seal, for example, the rear end seal 18 '.

  The end seal of conventional film packaging, especially if the free end near the distal end of the end seal, i.e., the unsealed part is very small or not at all, the user can wrap the package at the end seal itself. It may not be easy to open. In this configuration, the body of the packaging film can be gripped and the packaging panel can be pulled apart to open the packaging. As described herein, a tab portion may be provided to facilitate opening of the package. In one example, the front end seal 20 'has a pair of tabs 22' (one formed on the top and bottom of the flexible film) formed distal to the end seal 20 '. The tabs 22 'are radial shaped tabs, but other shapes are possible. Tab 22 'provides a tab for initiating opening of the package. The trailing edge 24 'of the package shows a concave radial shape corresponding to the shape of the tab 22' near the leading edge. A complementary configuration of the leading and trailing edges is formed when the pillow-type package 10 'is formed or separated from the film roll or when the package is separated from each other.

  In the configuration of FIG. 31, the front end seal 20 'can be peelable. Peelability can be achieved by using a sealant layer on the inner surface of the film 12 '. A peelable end seal can be formed by heating the seal area to between about 85-205 degrees Celsius, but the peelability of the seal depends on the range of heat used for the seal, the speed of the line, and the film Depends on thickness. Generally, the higher the temperature, the lower the peelability and the stronger the seal. In addition, the peelability and strength of the seal can be adjusted through patterns and indentations. For example, when the pressure sensitive adhesive is not arranged to completely cover the entire surface area of the label 40. In such a configuration, the pressure sensitive adhesive may be provided in a patterned configuration, such as an oblique parallel line pattern. According to another technique, a notch pattern may be provided on the surface of the sealing jaws that generate the heat seal.

  As previously described, laser-formed cuts or mechanically formed cuts or rotary die cuts can be formed in the flexible film 12 ', which can define packaging openings and / or tab portions. The cuts can be added to the film surface that will be the inner surface of the package. In addition, the die cutting or laser cutting of the film is not limited to a specific gauge of material or composition. Therefore, various films that give a certain degree of flexibility to the packaging manufacturing method can be used for packaging. In addition to this, the result is a product that is more cost effective than that found in the prior art. The tear strength of the cuts 42 'may be at least weaker than the adhesive strength of the pressure sensitive adhesive 40' that can peel a portion of the film 12 'along with the label 40'.

  According to one approach, the cut 42 'extends only to a portion of the package so as not to adversely affect the barrier properties of the package 10'. If the cut 42 'is a cut line halfway through the depth, the label 40' need not provide an initial security barrier, but can be so desired. According to another approach, the cut 42 'extends through the entire depth of the packaging film. Selectable barrier properties of the label 40 'can be obtained either from the intrinsic characteristics of the label material or by the addition of a barrier layer (not shown) to the label 40'. Further, in configurations where the cuts 42 'can affect the barrier properties of the film 12', the label 40 'may be configured to compensate for the impaired barrier properties.

  A variety of differently configured score lines can be incorporated into the package 10 '. For example, the desired packaging opening and tab can be changed according to the packaging material, configuration, and product specifications. The seal area or end seal can stop or prevent the propagation of the incision, or the incision pattern itself may be configured to provide such control. Figures 31-34, 46 illustrate some possible configurations.

  As shown in FIG. 31, the score line 42a ′ begins with two score lines at the front end of the package (near the end seal 20 ′), which extend rearward, inwardly tilted and merged. After forming a single tear line, the process ends with an arcuate “smile” portion 56 ′ as described below. In this configuration, the consumer can hold the unsealed lower layer of the tab 22 'with one hand and the laminate of the label 40' and the tab 22 'from the upper film 12' with the other hand. Once the opening 44 'is exposed, the package 10' can be closed again using the label 44 '. As shown in FIG. 35, the label 40 'can be peeled from the package 10' to expose the product 46 '. However, it is preferred that the label 40 'is not completely peeled from the packaging seat 10' during use. To prevent the label 40 'from peeling off the package 10', the trailing end seal 18 'may include a permanent, non-peelable seal that adheres the label 40' to the film 12 '.

  32 to 34 show other incision configurations 42b ', 42c', 42e '. These lines can be straight, arcuate, or a combination of both. The cuts 42a 'extend to the front end seal 20', but the cuts 42b ', 42c', 42e 'are disposed between the end seals 18', 20 'of one package 10'. Cut lines such as 42c ′ and 42e ′ may be used to provide a cut or cutout of film 12 ′ that is completely cut off from the rest of film 12 ′ (see FIGS. 37 and 38). . In addition, scoring lines such as 42a ', 42b', 42d 'are terminated designed to prevent or prevent further propagation of the scoring line beyond the scoring provided in the film during manufacture. May be included.

  To facilitate gripping and pulling of the tab 22 ', the label 40' can include a non-adhesive area 50 '. While the foregoing configuration has disclosed that the portion 38 of the flexible film 12 is lifted from the rest of the package, other configurations (such as FIG. 33) are for separation from the flexible film. It may be a package without a tab cut forming the part 38. As long as the lid layer or label is lifted from the film at the end seal, the grip tab portion is otherwise formed. For example, the tab 22 'can be formed without a pressure sensitive adhesive on the surface. As shown in FIG. 37, the tabs 22 'can be formed using regions 50' that are not age-related, i.e., have no adhesive applied. In addition, the adhesive applied thereto can be invalidated by using an adhesive force invalidating agent. For example, a coating process such as using ink or varnish may be utilized to invalidate the adhesive on the surface of the tab 22 '. In addition, a continuous lid layer or label 40 'may be folded to form a tack-free region that forms the tab 22'. As long as the label 40 'is pulled out of the package so that the package opening is exposed (i.e., a portion is not cut off from the rest of the film), the front end seal of the tab 22' is removed from the front edge of the package. Alternatively, it can be extended to a separation cut forming a package.

  As described above, a non-tacky tab may be formed by covering the adhesive with a portion of the film in addition to the areas where the adhesive is not applied or where the adhesive force is nullified. In short, a part of the film 12 'may be separated from the rest of the film 12' and cover the adhesive. For example, as shown in FIG. 32, a cut line 42d, such as a crescent cut, is added to the top layer of the end seal 20 'in the film 12' and a portion of the film 12 'is separated along it. You may be able to do it. In FIG. 32, the upper layer of the tab 22 ′ is not sealed with the lower layer of the tab 22 ′ (ie, is peelable), which is a cut, detachable film 12 ′. This is because the part is adhered directly to the label 40 ', which is indicated by a cut-out cut 42d'. In one configuration of FIG. 36, the front end seal 20 'is preferably a non-peelable permanent seal, even after the label 40' has been pulled and the package has been opened and closed. , Keep its integrity. Further, the package 10 'can be opened by peeling the resealable label 40' upward from the non-peelable seal between the film layers, without disturbing the end seal 20 '. A similar packaging configuration is shown in FIG.

  Exposed score lines tend to propagate tears that continue during use. Specifically, when the score line is being separated or broken, if the score line begins to separate, the film continues to tear beyond the point where the score line was originally formed in the film. Thus, the score line may be configured to prevent or resist such trends. For example, FIGS. 31 and 34 show an arcuate “smile” portion 56 ′ at the end or end of the score lines 42 a ′, 42 e ′. FIG. 32 shows a “Shepherd hook” at the end of the score line 42 b ′, ie a J-shaped hook. FIG. 33 shows a score line 42c 'having a closed loop, which also helps to prevent the film 12' from escaping in unexpected directions. FIG. 46 shows a score line 42f 'extending into the permanent rear end seal 18'.

  In addition to the “smile” portion 56 ′, the score line 42 a ′ also includes a straight portion that divides into two portions, which are inclined outwardly and then parallel to each other, leading the end seal. Get closer to. The cut line 42a 'extends to the front edge of the package 10'. The cut line 42e ′ included in FIG. 34 is similar to that of FIG. 31, but the cut line 42e ′ bends inward before reaching the front end seal 20 ′ to form a closed loop. Different. As shown in FIG. 38, the package 10 'of FIG. 34 includes a portion of the film 12' that is separated from the rest of the film 12 '.

  As mentioned above, a continuous lid layer or label 40 'can be attached to the outer surface of the film 12' towards the outside of the package 10 ', preferably with a pressure sensitive adhesive. The label 40 'preferably covers at least the score line 42'. The peel force between the surface of the package 10 'and the label 40' is greater than the force required to separate the face of the score line 42 '. Further, the label 40 'can be peeled with respect to the package 10'. For example, FIGS. 36 and 37 show a portion of film 12 'that adheres to label 40' and a pressure sensitive adhesive installed thereon to expose packaging opening 44 '. Therefore, if the tab 22 'is continuously pulled, the score line 42' begins to break or separate. In one exemplary embodiment, the pressure sensitive adhesive can be configured to have, for example, an opening (separation) force of about 350 grams / inch and a closure (adhesion) force of about 200 grams / inch. In addition to this, other opening and closing force ranges are also considered to be within the scope of the embodiments.

  The label 40 'can be any film with an adhesive coating, for example, not a flexible film with pressure sensitive adhesive, tape, label, or a separate label known in the art, It may also be a linerless label that is continuously attached in the longitudinal direction to the film flow. According to one approach, the linerless label can be a facestock with a pressure sensitive adhesive coating on one side and can be wound onto a spool without the use of a backing. For example, a release coating may be applied to the side of the label opposite the pressure sensitive adhesive. The support may be, for example, standard paper, film, plastic, cloth, foil, direct thermal transfer and others. In addition, linerless labels can be used with removable, re-adhesive adhesives.

  When using tape or linerless label, no waste of mount is released. In addition, precise alignment of the labels of each package is not required to continuously deposit the labels on the package film stream. The package 10 'can be formed with continuously installed labels 40', but the package 10 'can also be formed with individual labels 40b', 40c ', 40d' as shown in FIGS. May be.

  As described above, additional cuts, such as the tab cuts 15 described above, may be used to assist in forming the tabs. As shown in FIGS. 32 and 34, the cuts 42d 'can be made to break the film 12' by forming a separable portion that can be adhered to the tab 22 'in addition to the package 10'. FIGS. 36 and 38 also show that the user can pinch the laminate (including the upper film 12 'and label 40') and pull it back to open the package 10 '. Pulling it separates or tears the cuts 42d ', thereby separating a portion of the film 12' from the rest of the film and exposing the pressure sensitive adhesive 30 on the underside of the label 40 '. This provides a tab in which a portion of the film 12 'remains on the surface of the label 40' and the adhesive is not exposed, and at that time there is sufficient adhesive to cover the opening 44 'and surround it. It adheres to the label 40 '. Also, while the package 10 'is opened and closed again, the portion of the film 12' close to the front end seal 30 'separates, but the front end seal 30' remains intact.

  Another configuration shown in FIG. 50 includes a cut line 42g 'disposed within the end seals 18', 20 'and a cut line 42i' disposed on the end seal 20 '. Specifically, the score line 42g 'is formed in the film 12' and includes a slightly arcuate portion connecting two parallel portions. A slightly arcuate portion of the score line 42i 'is disposed near the end seal 20' and a parallel portion extends to the end seal 18 '. The cut lines 42i 'include a series of parallel straight lines formed in the film 12'. Having a plurality of lines helps to ensure that at least one of the plurality of lines is located adjacent to the proximal side of the end seal 20 '. In this way, a plurality of score lines 42i 'allow a portion of the film 12' to be separated from the rest of the film 12 ', thereby covering the pressure sensitive adhesive on the label 40'. . Furthermore, in order to be able to cut off a part of the film 12 'for the tab, at least a part of the score line i' is preferably located outside the inner space of the package 10 'of the film 12', ie Not between end seals 18 ', 20'. That is, by providing a plurality of score lines adjacent and distal to the end seal, it is possible to create a tab even if the packaging elements are misaligned during manufacture.

  The flexible film package 10 'can be formed and assembled by various methods. An exemplary process 60 'for forming a flexible film package is schematically illustrated in FIGS. In one configuration, the opposite sides of the film 12 'may be joined to form a joint seal 14' and may define the packaging height and interior space. More specifically, the joint seal 14 'can be formed by joining the edges of two films and sealing with a heated wheel. A sealant layer may be placed or applied to the film 12 'to facilitate the formation of the desired type of seal. A sealant or internal adhesive may be applied so that it covers the entire inner surface of the film 12 ', but this is only where it is necessary to provide a seal, i.e., near the end seal and the palm seal. It may be applied.

  The end seals 18 ', 20' may be formed after the product 46 'is once installed in the interior space of the package 10'. The end seals 18, 20 'can also define the width or length of the package 10'. The seals 14 ', 18', 20 'are preferably hermetic seals and provide a gas and moisture barrier. As with the other seals described herein, the seals 14 ', 18', 20 'can be thermoformed (ie, heat welded) or formed through other welding means. For configurations where the end seal 20 'is peelable, a low tack adhesive or cold seal and a process for forming such a seal may be used. In addition, the end seals 18 ', 20' may use patterns, wrinkles or indentations.

  As mentioned above, the label 40 'can be applied continuously along the length of the film 12' or the longitudinal length of the web. Once the product is at least partially wrapped in a web of film 12 'and sealed, the film and label laminate may be cut into individual packages. 41 and 42 show a continuum of molded packages that are not separated from each other. In one exemplary configuration, the tab 22 'may be formed, for example, by an arcuate cut 42d' formed on a roll of film, and placed at least partially in the front end seal 20 '. As individual packages are cut from the roll of laminate, the leading edge or shape of the tab 22 'can be configured. For example, the leading seal of the first package has a shape that matches the follower seal of the second package. Thus, the tab 22 'may be, for example, arcuate and may have a front edge defined by the leading edge of the package, and may be defined by an arcuate, eg, arcuate score line 42d'. It may have a rear trailing edge.

  As described herein, packaging manufacturing and assembly methods can utilize heat seal mechanisms, cold seal mechanisms, extrusion and adhesive lamination mechanisms, and coextrusion mechanisms. The equipment used may vary depending on the desired shape of the package. For example, if the tab 22 'includes a cut-out portion of the film 12' that is adhered to the label 40 ', the tab 22' adheres or attaches the label 40 'to the film 12' and attaches to the tab 22 '. It can be made by making and / or cutting. In addition, various incision configurations can be used, and the equipment that forms the incision line may vary depending on the incision configuration.

  The exemplary method 60 ′ for making a package, shown in FIG. 44, may include a packaging device, which positions the film above or near the product and then partially with the film. Wrap the product and form a joint seal on one side of the product. As shown, the film 12 'and the label 40' (which may be transparent) from each supply roll are combined or fused. Prior to fusing the label 40 ', the film 12' may be cut at 52 'on the surface of the film facing the interior of the film, but it should also be cut on the top surface. Can do. In other configurations, the label 40 'may preferably be fused to the film 12' before the cutting station 52 '. The joint seal 14 'may be formed when a laminate of film 12' and label 40 'forms a container or box 34' around the product 46 '(see also FIG. 45). The palm seal 14 'is directed to the bottom of the package 10' in FIGS. 44-45, but may be directed to any surface of the package 10 '.

  According to one approach, the heating wheels may be pressed together to form a package seal. For example, if a sealant layer is utilized, the heat sealant layer on the inner surface of the package can be activated by heat. In one configuration, an EVA sealant layer may be formed on the film 12 'and the heating wheel may be heated to between about 85-205 degrees Celsius. As discussed above, line speed, film thickness, and other factors can affect seal formation, including seal peelability and tightness.

  44, where the film 12 'at least partially encloses the product 46, end seals 18', 20 'can be formed by adjacent upper and lower sealing jaws 62', as will be described below. Seal jaw 62 'can form an end seal (such as a heat seal) of the package and can form or define a tab portion between tabs 22', eg, end seals 18 ', 20'. In configurations using an activated heat seal, the sealing jaw 62 'can be warmed by a heating element (not shown). In addition, if a different level of peelability is desired between the trailing end seal 18 'and the leading end seal 20', another heating element can be used. In addition, the cutting blade assembly can be used to completely cut individual packages, or to cut or puncture parts partially between the packages to hold the packages together when desired. A convenient method for separation can also be provided.

  The joint seal 14 'and end seals 18', 20 'can also be formed from a pattern imprinted on the heated wheel 38' or seal jaw 62 'as the film 12' is pulled through the manufacturing process. Can be embossed there. For example, the sealing jaws 62 'may rotate with the film web 12' as it moves through the production line, and the sealing jaws 62 'meet to form end seals 18', 20 '. The sealing jaw 62 'can also form a tab 22' and / or separate the package from the film. Alternatively, the film 12 'may be cut with a tab cutter die. Once the seal jaw 62 'forms the front end seal 20' in one package, the seal jaw 62 'can form the rear end seal 18' in another package. In a configuration where the sealing jaw 62 'forms both the trailing end seal 18' and the leading end seal 20 'in the same motion, a space is provided in the die where the films 12' are not sealed together. This space corresponds to the space 42 'between the seals of adjacent packages. The dimension 64 ′ of the free, unsealed portion (shown as 42 ′ in FIG. 43) of the package 10 ′ between adjacent package end seals 18 ′, 20 ′ is about 6-12 mm. There may be. The tab 22 'is primarily formed in this portion of the package 10', but the rear trailing edge may partially bite into the front end seal 20 '. If the seal jaw 62 'forms two seals 18', 20 'of adjacent packaging simultaneously, the dimension 64' is defined by the distance between the end seal areas on the die. Alternatively, the two end seals 18 ', 20 are applied repeatedly to two separate dies (unlike using one die at the other two separate sealing areas of the two end seals) or film Can be formed by a single sealing die that forms two end seals.

  Selectable or alternative features can also be incorporated into the packages described herein. For example, as shown in FIG. 37, a selectable frame 32 'may be added to the package. Film 12 'may wrap frame 32' to protect product 44 '. The sealing and resealing functions described herein can also be used for other configurations, such as vertical bag packaging specifically for special products such as coffee.

  Another alternative function is an individual label that is different from a continuous lid layer or label. A separate, aligned label may be attached to the package 10 'and other sealing or resealing functions may be incorporated therein. For example, FIG. 47 shows a package 10 'with a separate label 54', which can be attached between the end seals 20 'and 18'. The unsealed area can extend beyond the front end seal 20 '. FIG. 48 shows another package 10 ′, which has a separate label 54 ′ attached to the film 12 ′, one end of which is attached to the rear end seal 18 ′ of the package 10 ′. So that individual labels can be easily removed from the package 10 '.

  Although the embodiments of FIGS. 31-50 have been described as having a palm seal, lap seals can also be utilized. A wrap seal can be formed by first overlapping the first and second sides of the film (generally near the edges of the film) to form a sleeve (unlike overlapping the same side into a palm seal). ).

  FIG. 51 shows another pillow-type package 10 ″. The package 10 "is made by joining the opposite sides of the film to form a seal (shown as a joint seal 14"). The film 12 '' preferably has a sealant layer on its inner surface. In addition, a rear end seal 18 "and a front end seal 20" are also provided. In one embodiment, the front end seal 20 '' is non-peelable. The package 10 '' may be formed by a continuous deposition process as described above with respect to FIG. 1, or may be formed by a process that utilizes inner and outer die cuts (see, eg, FIG. 69) or individual It may be formed while the label is attached (see, eg, FIG. 68).

  As described above, the score lines tend to propagate tears formed in the film, and therefore the score can be configured to prevent or prevent the film from being unintentionally torn. The cuts 42 '' have patterns that reduce this tendency, for example, double J-shaped hooks (FIG. 53), “smile” (FIG. 54), or “tears” (FIG. 56). In addition to this, shepherd hooks and single J-shaped hooks can also be used.

  52-56 illustrate various film cut patterns 42 "that can be incorporated into the film packaging described herein. For example, FIG. 52 shows a T-shaped cut 42 "having a straight portion 42a" and an open portion 28a "shaped. FIG. 53 shows a J-hook cut, which has a hook configuration 28 b ″ molded with an arcuate portion 42 b ″ at one end and a “smile” or J hook at the opposite end. FIG. 54 shows an incision 42 ″ having a circular or loop-shaped opening 28c ″ and a generally straight portion 42a ″ that terminates in a “smile” portion. The incision 42 ″ shown in FIG. 55 has a spoon-shaped configuration 28d ″ that narrows into two substantially parallel, substantially parallel incision lines 42c ″ that are “smiles”. End with the configuration. If parallel cuts as shown in FIG. 55 are formed in the film 12 ″, the parallel cut lines are preferably not separated from each other by more than 5 mm. The cut 42 "shown in FIG. 56 has a shepherd hook configuration 28e" at each end and an arcuate portion 42b "between them. FIGS. 161 to 189 show still another film cutting pattern and configuration, which will be described later.

  Depending on the notch 42 "incorporated into the package, the opening created by the notch 42" allows the packaging opening to be easily removed and touched by a substantial portion of the product contained therein. It can be a large size. Furthermore, depending on the configuration, the tendency of the flexible film to create a large opening is due in part to the tendency of the flexible film to fold back into a flat sheet. This trend may be particularly evident in the case of generally round or oval products such as individual stacks of round cookies, crackers, biscuits, etc. to name a few. This occurs mainly when no frame is used in the flexible film of the package.

  Alternatively, the notch 42 "may include a straight line that extends completely or partially in the longitudinal direction along the length of the package, as shown in FIG. In one configuration, the cuts 42 "can be continuously formed in the packaging film 12" and the sealant in the film 12 "at the point where the end seals 18", 20 "are formed. Can be melted in a heat seal, which disables the function of the cuts 42 '' in the end seals 18 ", 20" and prevents unintentional opening of the package at the seal.

  As described above, the front end seal 20 "may have a tab 22 'formed distally, similar to the front end seal 20'. In one approach, the tabs 22 'can be Y-shaped, but other configurations are possible, such as, for example, square or radial shaped tabs. Tabs 22 "provide a tab for initiating opening of the package 10". The trailing edge of the package may include a concave shape corresponding to the shape of the leading edge tab 22 ". The front end seal 20 "may be peelable, i.e. may have a sealant layer separable from each other.

  As shown in FIG. 51, the label 40 "can be grasped and pulled upward from the package 10" to expose the score line 42a "and the package opening 44". A pressure sensitive adhesive 30 "is placed between the label 40" and the film 12 ". As previously described, the incision may be formed through tab 12 '' to penetrate film 12 '', thereby separating a portion of flexible film 12 '' from the rest of the film, A gripping portion that is not coated with an adhesive can be provided. In addition, the unapplied portion of the adhesive can be applied by defeating the adhesive strength of the adhesive placed on the tab 22 '' or by applying the adhesive to the label 40 '' or film 12 '. It can be formed by applying a pattern along a pattern in which no adhesive is placed on the portion of the label 40 ″ that will become the tab 22 ″ on the surface of the label.

  Another package 10 '' shown in FIG. 57 has a non-sealed inner surface 50 '' of the tab that the consumer can hold with one hand while the package is held in the opposite hand. It can be gripped with. The label 40 "can then be pulled backwards to expose the opening 44", as shown in FIG. Since the label 40 '' is preferably not completely peeled from the package 10 '' during use, the trailing end seal 18 '' is not peelable or permanent between the label 40 '' and the film 12 ''. A static seal may be formed. Alternatively, in some configurations, the label 40 "can be peeled upward at both ends of the package 10", and therefore both end seals may be peelable. For example, the cuts 42 "shown in FIG. 6 may be used along the label 40" and two tabs at both ends of the package 10 ". This allows the user to open the package 10 '' at either end with resealable seals provided for both openings.

  As described above, the package 10 "can be formed by various processes. In one exemplary package shown in FIG. 69, the laminate film 12 "has at least two polymer film layers 12a" and 12b "attached with a pressure sensitive adhesive 30". The film layer 12 a ″ may have a cut 58 ″ for making the label 40 ″. The film layer 12 b ″ may have a cut 42 c ″ that defines the opening 44 ″. The incision may be formed before or after the film layers 12a "and 12b" are laminated, but preferably is performed after the lamination. In this configuration, the film thickness may be in the range of about 1.8 to 3.0 mils. According to one approach, the film may be about 2.1 mils in this type of configuration.

  One exemplary method for forming a film package 10 "is shown as 60" in FIG. Step 60 '' is similar to that described above and shown in FIG. FIG. 61 shows a schematic side view of a sealing jaw that can be used in step 60 ″.

  Various configurations of the flexible film packaging disclosed herein can be provided with a packaging integrity indication that informs the consumer whether the packaging has already been opened.

  According to one approach, after the consumer has removed some of the product from the flexible film package, the flexible film can be rolled, folded, or otherwise flattened to vent the package. it can. Thereafter, the film wrapped with the elongate lid layer 14 and the product in the package can be wrapped, the package is smaller, the gap is smaller, and therefore the shelf life of the product is increased (see, eg, FIG. 59). ). Such a configuration is generally employed for packaging that does not use structural supports, such as frames or trays. However, depending on the configuration of the structural support and the flexible film, it is envisioned that such a configuration can be used with a specific structural support.

  In addition to the configuration of the embodiment described above, a plurality of other or continuous lid layers 14, such as a label comprising a pressure sensitive adhesive as described above, are attached over the cut film. Flexible packaging embodiments are possible. Such a configuration can include variations and combinations of several packaging aspects. In general, as will be described in more detail below, an exemplary flexible package includes a pull tab, a package formed as a continuous body, between the rear end seal and the front end seal, into and beyond the end seal. To increase the types and uses of multiple weak lines formed at the end that extends beyond the seal, the perimeter cuts formed around the end seal itself, or a combination of these with multiple weak lines. Various modifications and combinations of the cutting patterns can be included.

  As noted above, in addition to flexible films, some embodiments may include, for example, but are not limited to hair, paperboard (including poly-lined paperboard), rigid and semi-rigid polymers. , Metals, foils, composite materials, and other materials, including others. The material can be selected based on packaging integrity, shape retention, barrier (such as oxygen or moisture barrier), light barrier, and others.

  According to one approach, when the package is formed of a flexible film, the flexible film has two opposite edges that face each other from the first end seal to the second. A longitudinal seal is formed that extends to the end seal. It should be noted that other embodiments can be formed, such as a hollow tubular package having two end seals for sealing both ends of the tube. In this example, the packaging material can be an extruded resin to form a hollow tube. The vertical fill packaging described above and shown in FIGS. 190-196 can also be provided, including a gusseted embodiment as shown in FIG.

  The flexible film, as described above, may have a “cut” that defines a packaging opening when it is first broken, ie, opened for the first time. In addition to the above-mentioned cutting pattern, FIGS. 161-190 show the structure of another cutting pattern. It should be noted that in some embodiments, the cut line is enclosed (or partially enclosed) as shown in FIGS. 167, 170, 175, 180-183, 186, 187, for example. Eggplant. For example, the cut may create a cut-out (a film portion surrounded by the cut) that remains adhered to the lid layer via a pressure sensitive adhesive when the lid layer is pulled up from the package. The cut-out portion can make a larger opening in the package when the lid layer is pulled up from the package. In addition, these embodiments may also include tear propagation limiting means, such as a J hook (FIG. 161), a shepherd hook (FIG. 169) or a smile hook (FIG. 188).

  Embodiments described herein can be constructed as a laminate in a film and individually attached to the surface of the package (eg, the inner or outer surface of the flexible film) before forming the package, A lid layer (label) can be provided that can be applied continuously to the packaging material (which can be applied as the inner or outer surface of the flexible film). For example, a continuously applied lid layer as shown in FIGS. 1 and 18 can be formed from a flexible film pre-attached with a label (see FIG. 23). Exemplary variations of an elongated or continuous lid layer (label 14) are shown in FIGS. 152-160, 185, 189-196. It should be noted that in continuous label embodiments, the label is on the longitudinal axis of the package (ie, from one end seal to another end seal), or sometimes, for example, as in FIG. 191 (side to side) It can also be attached in a direction transverse to the vertical axis. The cut in the lid layer or the upper cut 13 of the label 14 (see FIG. 154) provides a label cut or separation at which the portion where the label is pulled up from the package is narrower, so that the user can The package can be opened more easily. Because the pressure sensitive adhesive is located between the label 14 and the film 12, the area of the label 14 between the edge of the label and the opening 2200 in the notch reseals the package after opening for the first time. It becomes easy.

  As described above, the elongate lid layer preferably extends to cover the notch and from the first end seal (ie, the first end of the package) to the second end seal (ie, the second end of the package). And between the opposite edges that face to form a longitudinal seal. The pressure sensitive adhesive can be disposed between the flexible film and the elongated lid layer. It should be noted again that in embodiments where the film is separated from the enclosed score line, the exposed pressure sensitive adhesive of the label facing the interior of the package is disabled before placing the label on the package. can do.

  The embodiments described herein can provide several types of weakened lines 2400 (see, eg, tab cuts 15 described above) to help separate the film from the lid layer. Some examples are shown in FIGS. In some configurations, the line of weakness 2400 is in the front end seal region, but extends beyond the end seal in the direction opposite the interior of the package and into the free end between the end seals of adjacent packages. It may be. Preferably, the line of weakness does not extend on the film towards the interior of the package. Otherwise, the line of weakness will tear into the film. Further, the weak line may be nested as shown in FIG. 121, but the line does not overlap at any point along the rising and falling of the line depending on the application.

  A large number of weak lines can relax the accuracy of the alignment of the cuts in the end seals, thus facilitating the alignment of the lines of the weak line cut forming device. Line of weakness 2400a in FIG. 99 reduces lateral forces when pulling down the release tab to open a score line that defines the interior of the package. A plurality of sinusoidal ridges allow opening at several points along the length of the end seal. It should be noted that angled and sharp lines of weakness are at least a small R, preferably in the range of about 0.1 mm to 25 mm (preferably in the range of about 0.25 mm to 2.5 mm). To suppress the propagation of tears.

  In some embodiments, various peripheral notch 2300 embodiments are provided. 80-98 show several approaches. The perimeter cut 2300 is designed to capture the propagation of a tear across the line of weakness 2400 when the package is opened, so that after opening, at least one of the line of weakness will tear and stop at the perimeter cut. In such an embodiment, the peripheral notch 2300 preferably does not contact the line of weakness 2400. In other embodiments, a perimeter cut can be added to a package configuration that is not provided with a line of weakness. Generally, the perimeter cut extends outwardly from the interior of the package toward the end seal of the package and extends upward around the perimeter of multiple lines of weakness. In other words, the peripheral notch extends in the distal direction of the packaging body toward the free end / edge of the packaging. The perimeter cut can extend to the edge of the flexible film, even if the flexible film extends beyond the end seal.

  The combination of the fragile line 2400 and the peripheral edge notch 2300 makes it possible to manage the propagation of the tear very well. Various combinations are shown in FIGS. For example, FIG. 152 shows a portion of a continuum of packaging that will eventually be cut along line 2100a (see also the separation line 2102 in FIGS. 152-153). As shown in FIG. 152, when the package is cut, a tab 2100a is formed on the grip of the free end of the film between the packages that is not joined by an end seal. Since the packaging front and rear panels are not connected at the free end of the flexible film, the user can peel off the tab 2100a. The top panel of the package is a film / label laminate. When the user peels off the film / label laminate from the package, it feels resistance when it reaches the end seal 28. The peel strength of the pressure sensitive adhesive between the label and the film is weaker than the peel strength of the end seal. Thus, when force is applied and the peel reaches the first line of weakness 2400 in the end seal, the label begins to peel from the flexible film. As shown in FIG. 152, the first line of (fragile line 2400a) is the point where the label peels from the film. The line of weakness 2400a is sinusoidal in shape and thus provides several peel points evenly across the length of the line of weakness.

  If the peel force continues to be applied during the opening of the package, the peel continues through the line of weakness and eventually ends on each side. At this time, the film tears slightly. This tear is stopped by the peripheral notch 2300, which captures the tear in the film and continues to peel the label further from the film, reaching the score line defining the packaging opening 2200.

  Other schemes are possible. For example, in FIG. 153, the label can be peeled off from the film without using the weak line 2400 by the peripheral edge notch 2300f.

  In another scheme shown in FIGS. 190-196, a vertically formed and filled bag 2500 is shown in two configurations. 190, 192, 194 show a broadcast 2500a with gusset 2508, and FIGS. 191, 193, 195-196 show a gussetless wrapping. Instead, 2500b has a vertical seal (not shown). In the package shown in FIG. 194, the label 14 is an individual label that is attached to the area of the end seal 28 and covers the peripheral notch 2502. In the package shown in FIG. 193, the label 14 is continuously attached in the transverse direction with respect to the longitudinal axis of the package. In the package shown in FIG. 195, the label 14 is continuously attached along the longitudinal axis of the package.

  In either case, a peripheral notch 2502 is formed in the film 12 below the label 14 and the end seal 28. In this embodiment, there is no film cut to provide a packaging opening. Therefore, this package is opened in the same manner as the conventional open seal package. That is, to peel off and open the end, the user grips the front and back film layers of the package, peels off the end seal 28 and exposes the interior of the package from the end of the package. In this embodiment, a portion of the end seal remains intact as defined by the peripheral cut. This portion is shown at 2504 in FIG. The peel strength of the end seal is stronger than that of the label PSA. To expose a portion of the PSA, the user can adhesively close the opening in the end seal by pinching the film and label layers adjacent to the intact end seal.

  FIG. 196 shows a blank of the packaging shown in FIG. 195, which includes a first end seal region (front end seal region) 42a, a second end seal region (rear end seal region) 42b, and a longitudinal direction. A sealing region 42c and a fold line 2506.

  Again, it should be noted that multiple configurations of cut patterns can be used to implement this embodiment. For example, a series of holes as shown in FIG. 123 can also be used as well as other enclosed types of weakened lines (eg, FIGS. 120, 124, 125-128, 130, 133-135).

  In this embodiment, the configuration of the tab 2100 can also be modified as shown in FIGS. Deformation can be done in terms of shape, such as curved (FIG. 70), pyramid (FIG. 76), trapezoid (FIG. 72), horizontal (FIG. 74), square (FIG. 77), etc. Deformation can also be done in terms of position, for example, bias (FIG. 73) or side pull (FIG. 70). As shown in FIGS. 75 and 78-79, the tab 2100 can be formed by a notch in the film for initiating tear propagation. The end tabs are formed when the package is cut to form the leading and trailing edges of the package, which is shown, for example, by the tear line 2102 in FIG.

  As shown in many of the embodiments of the present invention, end seals 28 and 29 are shown as horizontal lines. According to one method, as shown in FIG. 144, the weak line 2400at is a horizontal line. With this technique, the end seal can be formed in a sinusoidal pattern. In some embodiments, tamper protection can also be added, as shown in FIGS. As will be understood by those skilled in the art, various improvements, modifications, and combinations may be added to the above-described embodiments, which do not depart from the scope of the present invention, and such improvements, modifications, and combinations are also within the scope of the present invention. It is considered to be included in the category of the concept.

Claims (59)

A first pair of opposite edges defining a content containing interior space and forming a first end seal and a second pair of opposite edges forming a second end seal A flexible film having a portion and a third pair of opposite edges forming a longitudinal seal extending from the first end seal to the second end seal;
A notch provided in the flexible film to define an opening to the content-receiving cavity when first opened;
An elongated lid layer extending between the third edges, at least from the first end seal to at least the second end seal, and extending to cover the incision;
A pressure sensitive adhesive between the flexible film and the elongated lid layer;
Including
The elongate lid layer has a non-adhesive grip for slicing at least a portion of the elongate lid layer from the flexible film to form the opening in the content receiving cavity. Packaging.   The package of claim 1, wherein the non-stick gripping portion extends beyond the first end seal.   The packaging according to claim 1 or 2, wherein the non-adhesive gripping portion has a first shape, and the second end seal has a separating portion having a second shape.   The packaging according to claim 3, wherein the first shape and the second shape are the same.   5. A package according to any one of claims 1 to 4, wherein the non-stick grip comprises a folded and bonded portion of the elongate lid layer.   The packaging according to any one of claims 1 to 5, wherein the non-sticky grip portion of the elongate lid layer carries an adhesive force invalidating agent.   The packaging according to any one of claims 1 to 6, wherein the pressure-sensitive adhesive is not applied to the non-sticky grip portion of the elongated lid layer.   The packaging according to any one of claims 1 to 7, wherein the non-adhesive gripping portion includes an arcuate front edge.   9. A package according to claim 8, wherein the arcuate leading edge extends across the entire width of the elongate lid layer.   The flexible film has a predetermined width between edges of the third pair opposite to each other, and the elongate lid layer extends over half or less of the width. The packaging according to any one of 9.   The elongate lid layer extends beyond the notch and covers a marginal space around the notch sufficient to effectively reseal the opening after the notch is first opened. Item 11. The packaging according to any one of Items 1 to 10.   12. A package according to any preceding claim, wherein the elongate lid layer includes a label.   2. The elongated lid layer includes a second flexible film, and the pressure sensitive adhesive is disposed between the flexible film and the second flexible film. The packaging according to any one of 1 to 12.   The packaging according to any one of claims 1 to 13, wherein the flexible film includes a laminate structure.   15. A package as claimed in claim 14, wherein the flexible film comprises a coextruded film structure.   The packaging of claim 1, wherein the cuts penetrate the thickness of the flexible film.   The package according to any one of claims 1 to 15, wherein the cut is formed up to a part of the thickness of the flexible film.   The packaging according to any one of claims 1 to 17, further comprising a tray disposed inside the flexible film.   19. A package according to any one of the preceding claims, wherein the first end seal includes a non-peelable seal.   19. A package according to any preceding claim, wherein the first end seal comprises a peelable seal.   21. The package of claim 20, wherein the cut extends into the peelable seal.   22. A package according to any one of the preceding claims, wherein the second end seal comprises a non-peelable seal and prevents the elongate lid layer from being detached from the flexible film.   The package according to any one of claims 1 to 22, further comprising a plurality of individual food items arranged in the package.   When the plurality of individual food items are removed from the package, the flexible film is reduced and the elongated lid layer is reduced so that the pressure sensitive adhesive adheres to the opposite side of the package. 24. A package according to claim 23, comprising a film.   25. A package according to any one of claims 1 to 24, wherein the incision extends in a straight line, an arcuate shape, or a combination thereof.   25. A package according to any one of claims 1 to 24, wherein the incision comprises a pair of parallel incision lines.   27. A package according to any one of claims 1 to 26, wherein the incision includes a front end configured to propagate a tendency to tear.   28. The package of claim 27, wherein the incision comprises one of a loop, a T-shape, a shepherd hook, and a teardrop.   29. A package as claimed in any one of claims 1 to 28, wherein the incision includes a rear end configured to resist the film from tearing beyond the incision.   The rear end of the notch is configured to have one of a single J hook, a double J hook, a smile, a shepherd hook, a dovetail mold, and an extension to the rear end seal. 30. A package according to claim 29, characterized in that   The packaging according to any one of claims 1 to 30, wherein the notch has a U-shaped configuration.   32. A package according to any one of claims 1 to 31, wherein the cut is formed in the inner surface of the film web.   The flexible film further includes a tab cut adjacent to the first end seal, the tab cut separating a portion of the flexible film from the flexible film and the adhesive film. 33. A package according to any one of claims 1 to 32, characterized in that it forms at least part of a non-holding part.   34. The package of claim 33, wherein the tab cuts include a cut pattern.   35. The package of claim 34, wherein the pattern of notches includes at least one of a straight line or an arcuate line or a combination of both. In the manufacturing method of packaging,
Forming a cut in a portion of a continuous web of flexible film having a longitudinal axis;
Applying a continuous lid layer along the longitudinal axis with a pressure sensitive adhesive, wherein the continuous lid layer is applied over a portion of the width of the continuous web of flexible film; ,
Forming a continuous longitudinal seal from the opposite first pair of edges of the continuous web of flexible film;
Forming a first end seal from the edges of the second pair opposite each other and forming a second end seal from the edges of the second pair opposite each other;
Forming a non-adhesive gripping portion adjacent to one of the first and second end seals;
A method comprising the steps of:   37. The method of claim 36, further comprising forming a lid layer cut in the continuous lid layer, wherein the lid layer cut is disposed proximate to the adhesive-free gripping portion. Method. In laminates to produce flexible packaging,
A continuous web of flexible film having a width and a longitudinal axis;
A continuous lid layer attached with a pressure sensitive adhesive along the longitudinal axis to a portion of the width of the continuous web of flexible film or a portion equal to the width;
Including
The continuous web and the continuous lid layer are configured to be formed into a continuous body of packaging forming blanks, and the flexible film of each blank forming the same packaging is formed therein. A first cut, which then forms a packaging opening when the continuous lid layer is separated from the flexible film;
Each blank later has an unapplied gripping portion, partially defined by a second cut, in a transition region between adjacent blanks in the wrapping blank continuum. A laminate characterized by that. In a method of packaging products in-line in a continuum of packaging,
Providing a continuous film web having longitudinal edges spaced apart by a predetermined width;
Fusing a continuous substrate with the continuous film web over a portion of the entire predetermined width;
Installing an adhesive between the continuous substrate and the continuous film web;
Forming a cut in the continuous film web corresponding to the continuous substrate to define an opening in the continuous film web by cutting the continuous substrate upon first opening;
Continuously supplying products to be packaged;
Wrapping the continuous substrate around the product with the continuous film web;
Forming a longitudinal seal along the longitudinal edge;
Forming a front end seal and a rear end seal between adjacent packages of the continuum;
A method comprising the steps of:   40. The method of claim 39, comprising separating the end seals of adjacent packages.   41. The method of claim 40, wherein separating the end seals of adjacent packages comprises cutting the end seals laterally.   42. A method according to any one of claims 39 to 41, comprising forming a non-stick gripping tab comprising a portion of the substrate.   43. The method of claim 42, wherein the step of forming the non-stick gripping tab comprises cutting off a portion of the back end end seal and substrate of a preceding package in the package continuum. The method described.   The step of forming the non-stick gripping tab comprises cutting off the trailing end seal and a portion of the substrate of the preceding package of the package continuum to have an arcuate edge. 44. The method of claim 43, comprising.   43. The method of claim 42, wherein the step of forming the non-stick gripping tab comprises providing a non-adhesive portion of the substrate.   43. The step of forming the non-stick gripping tab includes the step of applying a sticky deactivating agent to the adhesive corresponding to the non-stick gripping tab. The method described in 1.   43. The method of claim 42, wherein the step of forming the non-stick gripping tab comprises the step of folding a portion of the substrate.   48. The method of any one of claims 39 to 47, wherein the step of placing an adhesive between the substrate and the film web includes the step of applying the adhesive to the substrate offline. The method described in 1.   49. The method of claim 48, wherein the substrate includes a liner and includes removing the liner in-line.   50. A method according to any one of claims 39 to 49, wherein the product is a food product.   51. The method of claim 50, wherein the step of providing the product comprises providing the product in a tray.   The step of forming a notch in the film corresponding to the substrate for defining an opening of the film by separating the substrate when the substrate is first broken includes the continuous substrate as the film web, and the predetermined width. 52. The method of any one of claims 39 to 51, wherein the method is performed after the step of fusing over a portion of the whole and the step of placing an adhesive between the substrate and the film web. . A flexible film having two opposite edges that form a longitudinal seal extending from the first end seal to the second end seal;
A notch defining a packaging opening when the flexible film is opened for the first time, and covering the notch in the edge from the first end seal to the second end seal; An elongated lid layer extending to
A pressure sensitive adhesive between the flexible film and the elongated lid layer;
Including
The flexible film package, wherein the elongate lid layer has a non-stick grip for severing at least a portion of the elongate lid layer from the flexible film to form the packaging opening. . Forming a cut in a portion of a continuous web of flexible film having a longitudinal axis;
Applying a continuous lid layer with a pressure adhesive along the longitudinal axis, wherein the continuous lid layer is applied over a portion of the width of the continuous web of flexible film;
Forming a continuous longitudinal seal from two opposite edges of the continuous web of flexible film;
Forming a first end seal and a second end seal;
Forming a non-adhesive gripping portion at the first end of the soft package;
The manufacturing method of the flexible packaging characterized by including. A first pair of opposite edges defining a content containing interior space and forming a first end seal and a second pair of opposite edges forming a second end seal A flexible film having a portion and a third pair of opposite edges forming a longitudinal seal extending from the first end seal to the second end seal;
A first notch provided in the flexible film to define an opening to the content-receiving cavity when first opened;
An elongated lid layer extending between the edges of the third pair opposite to each other, at least from the first end seal to at least the second end seal, and to cover the incision;
A pressure sensitive adhesive between the flexible film and the elongate lid layer, the pressure sensitive adhesive having a weaker peel force than the peel force of the end seal;
A portion of the opposite first pair of edges extending beyond the first end seal to form an elongated lid layer and a flexible film laminate pull tab;
A second cut defining at least a portion of an outer periphery of the pull tab laminate portion in the flexible film in the first end seal;
Packaging characterized by containing.   56. The package of claim 55, wherein the second cut is sinusoidal in shape and is oriented transversely to the longitudinal seal.   57. A package according to claim 55 or 56, wherein the end of the second notch ends in a first edge beyond the first end seal.   The outer periphery of the pull tab further includes at least one additional third cut that is transverse to the longitudinal seal but does not contact the second cut. 58. The packaging according to any one of 55 to 57. A first and second edge of a first pair opposite each other defining a content containing interior space and forming a first end seal; and an opposite side forming a second end seal A flexible having a second pair of edges and a third pair of opposite edges forming a longitudinal seal extending from the first end seal to the second end seal. With film,
A cut in each end of the flexible film in a portion of the first end seal that extends to the first edge;
A lid layer extending to cover the notch,
A pressure sensitive adhesive between the flexible film and the lid layer, such as having a weaker peel force than the end seal;
Packaging characterized by containing.

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