JP2013095482A - Easily openable package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easily openable package capable of accurately preventing a content from leaking, easily opening, and excellent in hygienic aspect when it is opened.SOLUTION: The easily openable package includes: a vertical sealed part which sealed an overlapped end part on a cylindrical film made by curving a film; and lateral sealed parts respectively sealed in the vertical direction to the vertical sealed part on both end parts. The lateral sealed parts includes: a first lateral sealed part for sealing one end part of the cylindrical film over the whole lateral direction; and a second lateral sealed part for sealing the other end part of the cylindrical film over the whole lateral direction. In the second lateral sealed part, a non-sealed region wherein only overlapped end parts each other are vertically sealed over a region separated by a predetermined distance from the other end part across the overlapped end part, is provided, and the non-sealed region includes a third lateral sealed part forming a hollow non-sealed region along the other end part.

Description

  The present invention relates to an easily openable package that can be easily opened and formed using an easy peel.

  Viscous foods such as mayonnaise, flower paste, cream, jam and the like (hereinafter referred to as “viscous body”) are generally filled in a package and transported.

  As such a package, for example, two sheets of an inner film and an outer film are stacked, the inner surface of the inner film and the inner surface of the outer film are highly blocking, and the outer surface of the inner film and the outer surface of the outer film A double bag package (packaging body) with low blocking properties (see, for example, Patent Document 1), a tube-like film is flattened into two layers, and both end faces of the two facing films are bag-like A multiple bag (packaging body) is known in which a back seal portion is formed by being closed and welded, and a lateral seal portion is formed by welding edges of an inner film and an outer film (for example, Patent Document 2). reference).

  By the way, in the package described in Patent Document 1 or Patent Document 2, it is difficult to take out the contents because the unsealing property is poor, and a tool such as scissors must be used. There is a fault that it may touch and becomes unsanitary.

  Therefore, in order to eliminate the above-described drawbacks, the film has a vertical seal part where the film is folded into a cylindrical shape and both side edges are overlapped, and a horizontal seal part where both end edges are heat welded. The easy-open bag (packaging) in which a seal portion is formed on the inner side edge portion side of the overlapping portion by heat-sealing a partition region that is isolated from the portion in which the object is stored across the horizontal seal portion and the vertical seal portion. Body) is known (for example, see Patent Document 3).

  FIG. 10 shows a conventional easy-open bag (packaging body) disclosed in Patent Document 3, which is accommodated across the upper horizontal seal portion 113 and the vertical seal portion 118 on the inner side edge portion 117 side of the overlapped portion. It is a perspective view of the easily openable bag (packaging body) which formed the seal part which heat-welded the 1st division area 115 and the 2nd division area 116 which isolate from the part in which the thing was accommodated.

JP 2003-026234 A Japanese Patent No. 4490045 JP 2007-261675 A

  However, in the package described in Patent Document 3, the amplitude based on the fluidity of the viscous body increases due to vibration or impact during transportation or the like, and the seal portion where the partition area is thermally welded may be broken by the liquid pressure. is there. In particular, the seal portions 119 and 121 in which the partition regions 115 and 116 in Patent Document 3 are thermally welded are separated because stress concentrates at the intersection (intermediate seal corner portion 120) between the second seal portion 119 and the intermediate seal portion 121. It was easy to do and was a problem.

  Further, the end of the outer knob 110 is easily peeled by the upper horizontal seal portion 113, and the unsealed portion between the intermediate seal portion 120 and the upper horizontal seal portion 113 in the outer knob 110 is grasped and opened. However, the openability has not been sufficient yet.

  Therefore, the present invention has been made in view of the above-mentioned conventional problems, and can be easily opened, and there is no peeling due to stress concentration due to movement of contents or vibration during transportation, and easy-open packaging excellent in openability. The purpose is to provide a body.

  The inventors of the present invention have intensively studied to solve the above problems. As a horizontal seal portion, the first horizontal seal portion and the second horizontal seal portion are provided over the entire horizontal direction, and one of the second horizontal seals is provided. It has been found that the above-mentioned problems can be solved by providing a non-sealed region in the part, and the present invention has been completed.

  In order to solve the above-described problems, the easy-open packaging body according to the present invention is provided with a vertical seal portion in which overlapping ends are sealed on a cylindrical film formed by curving the film, and the vertical seal portion is provided at both ends. And an easy-open packaging body provided with a lateral seal portion sealed in the vertical direction, wherein the lateral seal portion seals one end of the tubular film over the entire lateral direction. And a second horizontal seal portion that seals the other end portion of the tubular film across the entire horizontal direction, and the second horizontal seal portion straddles the overlapping end portion and the other end portion. A non-seal region in which only the overlapping end portions are vertically sealed is provided over a region that is a predetermined distance from the non-seal region, and the non-seal region is a hollow non-seal region along the other end portion. The third side that forms Characterized in that it comprises a pole tip.

  According to the present invention, the easy-open packaging body has the first horizontal seal portion and the second horizontal seal portion over the entire horizontal direction as the horizontal seal portion, and is divided without stress concentration. The seal portion forming the region does not peel off and can be easily opened. Moreover, even if the contents remain in the non-sealed region, they do not come into contact with air, so that the contents can be prevented from being corroded, and a package excellent in hygiene can be obtained.

FIGS. 1A and 1B are perspective views for explaining an outline of a method for producing an easy-open packaging body according to an embodiment of the present invention. FIG. 2 is a perspective view showing an example of an easy-open packaging body according to the embodiment of the present invention. FIG. 3 is an enlarged partial cross-sectional view showing a portion P in FIG. (A)-(c) of Drawing 4 is an explanatory view for explaining the opening method of the easy-open packaging body concerning the embodiment of the present invention, and (d)-(f) is a figure corresponding, respectively. It is a fragmentary sectional view of (a)-(c) of 4. FIG. 5 is a perspective view showing an example of an easy-open packaging body according to another embodiment of the present invention. (A)-(c) of FIG. 6 is explanatory drawing for demonstrating the opening method of the easy-open packaging body which concerns on other embodiment of this invention, (d)-(f) respectively respond | corresponds It is the fragmentary sectional view of (a)-(c) of FIG. FIG. 7 is a schematic view for explaining a method of manufacturing the easy-open packaging body 100 according to the embodiment of the present invention using a pillow packaging machine. FIGS. 8A to 8C are explanatory diagrams for explaining a process of forming a tubular film by folding a two-layer tube into a double body. FIGS. 9A to 9C are explanatory diagrams for explaining a process of forming a cylindrical film by overlapping two films to form a double body. In a conventional easy-open bag (packaging body), on the inner side edge portion side of the overlapped portion, a partition region that is isolated from the portion in which the object is accommodated across the horizontal seal portion and the vertical seal portion is thermally welded. It is a perspective view of the easily openable bag (packaging body) which formed the seal part.

  Next, embodiments for carrying out the present invention will be described in detail with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified thru | or abbreviate | omitted suitably. Further, the dimensional ratios in the drawings are not limited to the illustrated ratios.

  The easy-open packaging body according to the embodiment of the present invention is obtained by forming the film 1 into a cylindrical shape, filling the contents, and sealing it in a predetermined position. As film 1, polyethylene, polypropylene, polyamide, polyethylene terephthalate, polystyrene, polycarbonate, polyvinyl chloride, polyvinylidene chloride, polyacrylonitrile, ethylene-α-olefin copolymer, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate Various resins such as a copolymer can be used depending on the purpose. These may be used alone or as a mixture of a plurality of materials. The film 1 may contain additives such as a flame retardant, a preservative, a colorant, and a lubricant. The film 1 may be subjected to plasma treatment, corona treatment, and the like.

  FIGS. 1A and 1B are perspective views for explaining an outline of a method for producing an easy-open packaging body according to an embodiment of the present invention. First, as shown to (a) of FIG. 1, it curves so that the vertical edge part 1a of the both sides of the one film 1 may overlap. And it is set as the cylindrical film 2 provided with the vertical seal | sticker part 5 as shown in (b) of FIG.

  Next, the tubular film 2 is filled with the contents, and the upper and lower lateral ends 2a of the front opening of the tubular film and the upper and lower lateral ends 2a of the rear opening are respectively sealed. The contents are sealed by providing a lateral seal. Thereby, the vertical seal | sticker part 5 and a horizontal seal | sticker part are provided, and the easy-open packaging body with which the content was filled is obtained.

  FIG. 2 is a perspective view showing an example of an easy-open packaging body according to the embodiment of the present invention. As shown in FIG. 2, the easy-open packaging body 100 according to the present embodiment is manufactured from the film 1 as described above, and includes an easy peel having a heat seal strength of less than 10 N / 15 mm width according to JIS K6854. A vertical seal portion 5 and horizontal seal portions 6a and 6b are provided. Since the easy-open packaging body 100 can be opened by grasping the corner end of the film, it can be peeled off along the vertical seal portion 5 in the vertical direction, and at the same time, the horizontal seal portion 6a can be peeled off. For this reason, it can open easily.

  FIG. 3 is an enlarged partial cross-sectional view showing a portion P in FIG. As shown in FIG. 3, the vertical seal part 5 (part P) of the tubular film 2 is such that the end of the outer vertical end part 1a of the stacked vertical end parts 1a extends beyond the part to be sealed. It is preferable to further have a vertical end 1b. In this case, the vertical seal portion 5 can be peeled off more easily by picking and pulling the vertical end portion 1b.

  Returning to FIG. 2, the horizontal seal portion is provided in a straight line across the entire horizontal direction on the lower side in the vertical direction when the easy-open packaging body 100 is formed in the bag making simultaneous filling method described later. It comprises a seal portion 6b and a second horizontal seal portion 6a provided in a straight line in the horizontal direction on the upper side in the vertical direction when the easy-open packaging body 100 is formed in the bag making simultaneous filling method described later. . The second horizontal seal portion 6a includes an unsealed non-sealed region 7 smaller than the second horizontal seal portion 6a over a region separated by a predetermined distance from the end portion across the overlapping film ends. Further, the seal strength of the first horizontal seal portion 6b is set to a value larger than the seal strength of the second horizontal seal portion 6a. Thereby, even if an unexpected vibration or impact is transmitted to the contents during bag making and the amplitude increases, the first horizontal seal portion 6b can more reliably prevent the contents from leaking. The seal strength can be changed by adjusting the pressure and temperature at the time of sealing. Further, it is possible to make the first horizontal seal portion 6b stronger than the second horizontal seal portion 6a by increasing the width of the seal. Therefore, the non-seal region 7 can be prevented from being broken when the contents are filled by providing the non-sealed region 7 in the second horizontal seal portion 6a provided on the upper side in the vertical direction during bag making.

  In the easy-open packaging body 100, the first horizontal seal portion 6b and the second horizontal seal portion 6a are provided in parallel. Further, the vertical seal portion 5, the first horizontal seal portion 6b, and the second horizontal seal portion 6a are formed in a vertical direction. For this reason, the fluid pressure of the contents due to vibration or impact during transportation or the like is generated evenly and perpendicularly to the second horizontal seal portion 6a or the first horizontal seal portion 6b, so that a load is locally applied to the horizontal seal portion. The second horizontal seal portion 6a is not easily peeled off, and the contents can be easily opened without moving to the non-sealed region 7.

  The 2nd horizontal seal part 6a is formed by sealing the upper and lower horizontal end part 2a (FIG. 1) of the opening part ahead of the cylindrical film 2 over the whole horizontal direction. The second horizontal seal portion 6a may be a wide seal made up of one line or a seal made up of a plurality of thin lines (hereinafter also referred to as “line-shaped seal”). It is necessary that the non-seal region 7 is formed in a substantially central portion in the lateral direction of the horizontal seal 6a over a region separated from the end face by a predetermined distance. By grasping the end portion of the non-sealed region 7, easy-openability is maintained.

  The vertical width of the second horizontal seal portion 6a is preferably 5 mm or greater and 30 mm or less. In addition, when the 2nd horizontal seal | sticker part 6a is the aggregate | assembly of a line-shaped seal, the vertical width of the 2nd horizontal seal | sticker part 6a says the vertical width of the whole aggregate | assembly of a line-shaped seal. If the vertical width of the second horizontal seal portion 6a is less than 5 mm, the filled content is sufficiently leaked when the second horizontal seal portion 6a is peeled off as compared with the case where the vertical width is within the above range. May not be able to prevent. Moreover, when the vertical width of the 2nd horizontal seal part 6a exceeds 30 mm, compared with the case where a vertical width exists in the said range, there exists a fault which becomes difficult to open an easily openable package.

  In addition, the second horizontal seal portion 6a extends over the vertical seal portion 5a and is a region separated from the end of the second horizontal seal portion 6a by a predetermined distance (in FIG. 2, a substantially central portion of the second horizontal seal portion 6a). ) Is formed in the non-sealed region 7. In this non-sealed region 7, only the vertical seal portion 5a is sealed. That is, since the longitudinal end 7a of the non-seal region 7 is not formed with a seal, the upper film 11 on one side forming the non-seal region 7 (see FIG. 4, hereinafter referred to as “first upper film”). And the upper film 12 on the other side (refer to FIG. 4, hereinafter referred to as “second upper film”) are sealed only by the vertical seal portion 5a, and the second upper film and the lower film 13 (see FIG. 4) is not vertically sealed.

  Therefore, the longitudinal end 7a can be grasped. Further, since the vertical seal portions 5, 5a, the second horizontal seal portion 6a, and the first horizontal seal portion 6b are all formed by line seals, the vertical direction can be obtained by grasping the vertical end portion 7a. And the horizontal direction are easy to peel off at the same time and contribute to further ease of opening.

  The first horizontal seal portion 6 b is formed by sealing the upper and lower horizontal end portions 2 a (FIG. 1) of the opening at the rear of the tubular film 2 over the entire horizontal direction. The first horizontal seal portion 6b may be a solid seal or an assembly of line seals. Moreover, the 1st horizontal seal part 6b and the 2nd horizontal seal part 6a may be formed simultaneously, or may be formed separately.

  The vertical width of the first horizontal seal portion 6b is set to a value larger than the vertical width of the second horizontal seal portion 6a. In addition, when the 1st horizontal seal | sticker part 6b is an aggregate | assembly of a line-shaped seal, the vertical width of the 1st horizontal seal | sticker part 6b says the vertical width of the whole aggregate | assembly of a line-shaped seal. By setting the vertical width to a large value, the first horizontal seal portion 6b can more stably prevent the contents from leaking when the contents are filled when the contents are produced.

  In the easy-open packaging body 100, the second horizontal seal portion 6a is provided with a non-seal region 7 at a substantially central portion in the horizontal direction of the second horizontal seal 6a. Note that the non-sealed region 7 is not sealed and is not filled with the contents. Thereby, it becomes easier to open than the case where the first horizontal seal portion 6b and the second horizontal seal portion 6a are continuously sealed with a solid, and when the easy-open packaging body 100 is opened, it is not sealed. Since the finger can be inserted into the region 7 and the lower film can be pressed to peel off the upper film, it is easier to open. In this non-sealed region 7, the second horizontal seal portion 6a is in an unsealed state, but the vertical seal portion 5a is in a sealed state.

  Here, an example of a method for opening the easy-open packaging body 100 will be described. (A)-(c) of Drawing 4 is an explanatory view for explaining the opening method of the easy-open packaging body concerning the embodiment of the present invention, and (d)-(f) is a figure corresponding, respectively. It is a fragmentary sectional view of (a)-(c) of 4. As shown in FIGS. 4A and 4D, the method for opening the easy-open packaging body 100 is as follows. First, in the non-sealed region 7, a film on one side (hereinafter referred to as “first upper film”). ) 11, while holding down the lower film 13, the vertical seal portion 5 sealed with the film on the other side (hereinafter referred to as “second upper film”) 12 is peeled off, and the first upper film 11 is peeled off. .

  Next, as shown in FIGS. 4B and 4E, a finger is inserted between the second upper film 12 and the lower film 13 in the non-sealed region 7. Then, the second upper film 12 is peeled off while holding the lower film 13. Thereby, as shown to (c) and (f) of FIG. 4, the easy-open packaging body 100 is opened. Thus, the easy-open packaging body 100 can be opened without touching the contents during opening. For this reason, it is excellent in hygiene.

  Here, the vertical width of the non-seal region 7 is preferably 10 mm or more and more preferably 10 mm or more and 50 mm or less from the viewpoint of finger insertion.

  Next, a second embodiment of the present invention will be described. FIG. 5 is a perspective view showing an example of an easy-open packaging body according to another embodiment of the present invention. The easy-open packaging body 1000 according to another embodiment of the present invention is different from the easy-open packaging body 100 according to the above-described embodiment of the present invention in that the non-sealed region 7 is completely unsealed. Instead, the end face is sealed by the third horizontal seal portion 8, and the non-seal region 7 is a hollow non-seal region.

  In the easy-open packaging body 100 described in the first embodiment of the present invention, the non-sealing region 7 is provided in the substantially central portion in the lateral direction of the second horizontal seal portion 6a in order to facilitate the openability. However, when the easy-open packaging body 100 is filled with the contents and then sealed with the second horizontal seal portion 6a, a part of the contents remains in the non-sealed region 7 and remains with time. It will also interfere with the hygiene aspect of opening when things corrode.

  Therefore, even if contents remain in the non-sealed region 7, in order to prevent them from coming into contact with air, the non-sealed region 7 is sealed by sealing the non-sealed region 7 with the third horizontal seal portion 8. The easy-open packaging 1000 is intended to solve the sanitary problem caused by the corrosion of the contents and the like in a hollow state.

  That is, the second horizontal seal is formed in the non-sealed region 7 formed over a region separated by a predetermined distance from the end surface across the vertical seal 5a at the substantially central portion in the horizontal direction of the second horizontal seal 6a. Although the seal is not formed by the portion 6 a, the seal is formed by the vertical seal portion 5 a, and the end surface of the non-sealed region 7 is formed by the third horizontal seal portion 8. Therefore, the longitudinal end 7b of the non-sealed region 7 is sealed at the one end face by the third transverse seal 8, but the end face perpendicular to the one end face is not sealed. The part 7b includes an upper film 11 on one side (hereinafter referred to as “first upper film”) (FIG. 6) and an upper film 12 on the other side (hereinafter referred to as “second upper film”). ") (FIG. 6) there is a gap that allows a finger to be inserted. In addition, the substantially horizontal center portion of the first horizontal seal portion 6b is formed by sealing the first horizontal seal portion 6b and the vertical seal portion 5a.

  Next, an example of a method for opening the easy-open packaging body 1000 will be described. (A)-(c) of FIG. 6 is explanatory drawing for demonstrating the opening method of the easy-open packaging body which concerns on other embodiment of this invention, (d)-(f) respectively respond | corresponds It is the fragmentary sectional view of (a)-(c) of FIG. As shown in FIGS. 6A and 6D, the method of opening the easy-open packaging body 1000 is as follows. First, in the non-sealed region 7, the first upper film 11 and the second upper film of the longitudinal end 7b. Insert a finger into the gap formed between the film 12 and the first upper film 11 and the second upper film, and the sealed third horizontal seal portion 8 and vertical seal portion 5a are connected to the lower film 13. Remove while pressing.

  Next, as shown in FIGS. 6B and 6E, a finger is inserted between the second upper film 12 and the lower film 13 in the non-sealed region 7. Then, the second upper film 12 is peeled off while holding the lower film 13. Thereby, as shown to (c) and (f) of FIG. 6, the easy-open packaging body 1000 is opened. Thus, the easy-open packaging body 1000 can be opened without touching the contents during opening. For this reason, it is excellent in hygiene.

  Here, the vertical width of the hollow portion of the non-sealed region 7 is preferably 10 mm or more, and more preferably 10 mm or more and 50 mm or less from the viewpoint of finger insertion.

<Method for producing package 1>
Next, an example of a method for manufacturing the packaging bodies 100 and 1000 of the present embodiment will be described with reference to FIG.

  The packaging bodies 100 and 1000 of this embodiment are made of a laminated film F sealed by a vertical seal portion 5, a first horizontal seal portion 6b, and a second horizontal seal portion 6a using a pillow packaging machine 10 as shown in FIG. A package 100 (1000) in which the contents W are filled in the bag is manufactured.

  FIG. 7 shows the completion of feeding of the laminated film F during steady operation. In FIG. 7, by closing the iron roll 15 that can be freely opened and closed, the first horizontal sealing machine 16 that can be opened and closed in the ironing section 18 that has been flattened by squeezing and flattening the upper open portion side of the package 1x before separation. A lateral seal portion provided with an upstream weld region that becomes the first lateral seal portion 6b and a downstream weld region that becomes the second lateral seal portion 6a in order from the upstream side to the downstream side by closing the lateral seal machine 17 9 is formed. Then, the press / cutter 28 that can be freely opened and closed is opened, and the packages 100 and 1000 are dropped into an outer box (not shown). Here, the second horizontal sealing machine 17 that forms the downstream welding region has a non-sealing portion that forms the non-sealing region 7. Moreover, it is preferable that the first horizontal sealing machine 16 is configured to have a higher welding temperature and / or pressure than the second horizontal sealing machine 17 to increase the welding strength.

  In the present embodiment, a predetermined amount of the contents W is transferred from the hopper 21 into the cylindrical body 37 in which the horizontal seal portion 9 that becomes the second horizontal seal portion 6a and the first horizontal seal portion 6b is formed in the previous filling step. throw into.

  Next, the ironing roll 15, the first horizontal sealing machine 16, and the second horizontal sealing machine 17 are opened, the feed roll 14 is rotated, and the cylindrical body 37 and the laminated film F following the packaging body 1x are predetermined. The length of is extended. The laminated film F fed from the raw fabric roller R is guided to the former 22 through a plurality of feeding rolls 24 and 25, and is curved in a cylindrical shape while passing through the former 22, and the seal layers are overlapped. A superposition part is formed. And this superposition | polymerization part is heat-welded while passing the vertical sealing machine 23, the vertical seal part 5 by which the inner sides of the laminated | multilayer film F were sealed integrally is formed, and the continuous cylindrical body 37 is formed.

  On the other hand, when the cylindrical body 37 filled with the contents W passes through the ironing roll 15, the ironing roll 15 is closed and the upstream side of the cylindrical body 37 filled with the contents W is ironed and flattened. The ironing part 18 is formed.

  Next, the first horizontal sealing machine 16 and the second horizontal sealing machine 17 are closed, the downstream side welding region that becomes the second horizontal sealing part 6a on the downstream side, and the first horizontal sealing part 6b on the upstream side on the ironing part 18. The horizontal seal part 9 consisting of the upstream welding region is formed to manufacture the package 1x before separation.

  Next, the press / cutter 28 is closed, and the upstream welding region that becomes the first horizontal seal portion 6b that is the horizontal seal portion 9 to which the package 1x before separation is connected and the downstream side that becomes the second horizontal seal portion 6a. The packaging bodies 100 and 1000 are manufactured by sandwiching the welding area and dividing the boundary between the two by the cutter 28a.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment.

For example, in the easy-open packaging body according to the present embodiment, a single film is used, but a two-layer configuration of an inner film that contacts the contents and an outer film that does not contact the contents may be used. That is, a two-layer film composed of an inner film and an outer film is overlapped to form a cylinder, and the contents are filled into a cylindrical film provided with a vertical seal portion at the overlapping vertical end portion. It is good also as an easily openable packaging body by providing a horizontal seal part in both the front and rear lateral ends and sealing it.
Further, as in Patent Document 2, a single extruded film may be folded into two layers, filled with the contents, and an easy-open packaging body may be formed. .

  FIGS. 8A to 8C are explanatory views for explaining a process of forming a tubular film by folding a double-layer tube into a double layer. As shown to (a) of FIG. 8, the multiple film 94 is supplied to the manufacturing process of an easily openable packaging body from the roll-shaped film 91 which folded the film on a tube into flat shape, and was wound. Therefore, the multiple film 94 supplied to the manufacturing process of the easy-open packaging bodies 100 and 1000 is such that the side edges 96 and 96 of the inner film 92 and the outer film 93 that are parallel to the extrusion direction are continuous with each other. is there.

  In the bag-making process of the easy-open packaging body, the multiple film 94 supplied in this way is curved into a cylindrical shape such as a cylindrical shape, and the portions 97 and 98 that are stacked up in a curved shape are sealed by welding. Then, the vertical seal portion 5 is formed and formed into a cylindrical shape.

  FIGS. 9A to 9C are explanatory views for explaining a process of forming a tubular film by forming a double body in which two films are stacked and laminated. The roll-shaped raw fabric 104 shown in FIG. 9 is composed of an outer film 102 and an inner film 103 constituting the double film 101, both of which are composed of a single layer film, both of which are composed of a multilayer film, and either one is a single film. Any of the layer film and the other layer film may be used.

  In the bag-making process of the easy-open packaging body, the roll-shaped raw fabric 104 supplied in this way is curved into a cylindrical shape such as a cylindrical shape, and the portions 97 and 98 that are stacked in a rising shape due to the curved shape are welded. The vertical seal portion 5 is formed in a cylindrical shape.

  The present invention has been described above by the preferred embodiments of the present invention. While the invention has been described with reference to specific embodiments thereof, various modifications and changes can be made to these embodiments without departing from the broader spirit and scope of the invention as defined in the claims. is there.

  The easy-open packaging body according to the present invention is suitably used as a packaging body used when a viscous liquid viscous material such as mayonnaise or dressing is conveyed. According to the easy-open packaging body according to the present invention, it is possible to reliably prevent the leaking of the viscous body, and it can be easily opened, and is excellent in terms of hygiene at the time of opening.

DESCRIPTION OF SYMBOLS 1 Film 1a Vertical edge part 1b, 7a, 7b Longest edge part 2 Cylindrical film 2a Horizontal edge part 5, 5a Vertical seal part 6a 2nd horizontal seal part 6b 1st horizontal seal part 7 Non-seal area | region 8 3rd horizontal seal Part 9 Horizontal seal part 10 Pillow packaging machine 11 First upper film (film)
12 Second upper film (film)
13 Lower film (film)
DESCRIPTION OF SYMBOLS 14 Feed roll 15 Ironing roll 16 1st horizontal seal part 17 2nd horizontal seal part 18 Ironing part 21 Hopper 22 Former 23 Vertical sealing machine 24, 25 Feeding roll 28 Press and cutter 28a Cutter 37 Cylindrical body 91 Roll-shaped film 92, DESCRIPTION OF SYMBOLS 103 Inner film 93,102 Outer film 94 Multiple film 96 Edge 97,98 Site | part 100,1000 Easy-open packaging body 101 Double film 104 Roll-shaped original fabric P Part R Original fabric roller

Claims (3)

Easy-open packaging with a cylindrical film that is formed by curving a film, provided with a vertical seal part that seals the overlapping end parts, and a horizontal seal part that is sealed in the vertical direction with the vertical seal part at both ends. Body,
The horizontal seal portion seals one end of the tubular film across the entire horizontal direction and a first horizontal seal portion that seals the other end of the tubular film across the entire horizontal direction. It consists of two horizontal seals,
The second horizontal seal portion is provided with a non-seal region in which only the overlapping end portions are vertically sealed across a region separated by a predetermined distance from the other end portion across the overlapping end portions,
The said non-seal area | region is provided with the 3rd horizontal seal part which forms a hollow non-seal area | region along said other edge part, The easy-open packaging body characterized by the above-mentioned.   The easy-open packaging body according to claim 1, wherein the second horizontal seal portion is provided in the horizontal direction on the upper side in the vertical direction at the time of bag making.   The easy-open packaging body according to claim 1 or 2, wherein the first horizontal seal portion has a stronger seal strength than the second horizontal seal portion.

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