JP7147140B2 - packaging bag - Google Patents

Description

The present invention relates to packaging bags. In particular, the present invention relates to a packaging bag composed of a laminate having a plastic film as a base material, which is convenient for taking out contents and resealing.

Conventionally, a packaging bag made of a laminate having a sealant layer with a plastic film as a base material is not only composed of a single layer of packaging film other than the sealant layer, but also other films, resin layers, metal foils, etc. As a laminate, one of the features is that it is possible to design the layer structure and materials according to the required quality depending on the content, and it is widely used for various purposes.

In particular, packaging bags made of a laminate having a sealant layer with a plastic film as a base material are widely used in a wide range of fields such as food, but are more advantageous than glass bottles and cans in terms of performance and cost. .

In addition, recently, there has been a movement to reduce waste from the perspective of environmental protection by discontinuing the use of disposable plastic and glass bottles. Especially for bags, the demand is increasing.

However, pillow-type packaging bags typified by packaging bags for potato chips and the like use a laminate with a packaging film as a base material. There were cases where the use was limited due to reasons such as being difficult to put in a cup holder.

Alternatively, a paper cup container can be placed in a car cup holder, but it is inevitable that there will be a step where the side seam of the cup and the top curl overlap, so it is necessary to seal it when resealing. Have difficulty.

In addition, if a paper container made of paper is used, waste paper cannot be used if, for example, food comes into direct contact with the inner surface of the container, and the price increases. In addition, when the contents contain oil, oil-resistant paper is used to prevent oil bleeding, which is also a factor in increasing the price. Furthermore, the reality is that even greaseproof paper is not perfect against oil bleeding.

Patent Document 1 proposes a packaging bag using a plastic film as a base material. Also, no particular consideration was given to practicality such as ease of taking out the contents.

JP 2016-113214 A

The present invention has been made in view of such circumstances, and a hexahedral packaging bag made of a packaging film and a paperboard or the like in part, is self-supporting, easy to open, and easy to take out the contents. and a resealable packaging bag.

As a means for solving the above problems, the invention according to claim 1,
A hexahedral packaging bag made of packaging film and partly paperboard,
The packaging bag is composed of four sides of the body, a top surface, and a bottom surface,
The four sides of the torso consist of the front of the torso, the back of the torso, and the left and right sides of the torso,
In the bottom surface, a bottom plate made of a packaging film is sealed at the lower part of the body so as to form a rectangular surface by being sealed to the body,
The four sides of the body are made of two wrapping films, and the left and right sides of the body are sealed with the two wrapping films ,
In the upper part of the trunk, the packaging film continuous forward from the top surface and the packaging film continuous upward from the front surface of the trunk protrude from the top surface, form a seal part at the tip, and fold forward. make up the department,
The front folded part is folded downward along the folding line of the upper end of the front surface of the body, and is fixed by adhesively detachably covering the upper front half of the front of the body and the upper front halves of both left and right sides of the body. cage,
There is a horizontal opening planned line on the folding line at the upper end of the front of the body,
Two vertical unsealing lines are provided from both front and back surfaces of the front folded part to the top surface, continuing in the direction perpendicular to the horizontal unsealing line,
A paperboard on the top surface has perforations at the position of the opening and is attached to the surface of the packaging film that will be the inside of the container,
The paperboard and perforations on the top surface can be exposed by opening the packaging film along the horizontal and vertical tear lines and subsequent separation of the top packaging film,
Further, the packaging bag is characterized in that an opening is formed in the top surface by opening along the perforations of the paperboard.
In addition, the invention according to claim 2,
A hexahedral packaging bag made of packaging film and partly paperboard,
The packaging bag is composed of four sides of the body, a top surface, and a bottom surface,
The four sides of the torso consist of the front of the torso, the back of the torso, and the left and right sides of the torso ,
In the bottom surface, a bottom plate made of a packaging film is sealed at the lower part of the body so as to form a rectangular surface by being sealed to the body,
The packaging film consists of a film extending from the front surface of the body through the bottom surface to the rear surface of the body, and the both ends of the packaging film are sealed to each other on both left and right sides of the body,
In the upper part of the trunk, the packaging film continuous forward from the top surface and the packaging film continuous upward from the front surface of the trunk protrude from the top surface, form a seal part at the tip, and fold forward. make up the department,
The front folded part is folded downward along the folding line of the upper end of the front surface of the body, and is fixed by adhesively detachably covering the upper front half of the front of the body and the upper front halves of both left and right sides of the body. cage,
There is a horizontal opening planned line on the folding line at the upper end of the front of the body,
Two vertical unsealing lines are provided from both front and back surfaces of the front folded part to the top surface, continuing in the direction perpendicular to the horizontal unsealing line,
A paperboard on the top surface has perforations at the position of the opening and is attached to the surface of the packaging film that will be the inside of the container,
The paperboard and perforations on the top surface can be exposed by opening the packaging film along the horizontal and vertical tear lines and subsequent separation of the top packaging film,
Further, the packaging bag is characterized in that an opening is formed in the top surface by opening along the perforations of the paperboard.

In addition, the invention according to claim 3 ,
3. The packaging bag according to claim 1 , wherein the perforation is formed in a U-shape on the paperboard of the top surface.

Further, the invention according to claim 4 ,
The packaging film on the top surface and the paperboard are laminated by providing a heat-sealable layer on the paperboard and pasting them together by heat sealing outside the two vertical opening lines. The packaging bag according to any one of claims 1 to 3 .

In addition, the invention according to claim 5 ,
The packaging according to any one of claims 1 to 3, wherein the packaging film on the top surface and the paperboard are laminated on the paperboard with an easy peel film laminated over the entire surface thereof. is a bag.

In addition, the invention according to claim 6 ,
The packaging bag according to any one of claims 1 to 5 , wherein the horizontal planned opening line and the vertical planned opening line are half-cut lines on the packaging film by a laser beam. be.

In addition, the invention according to claim 7 ,
7. The packaging bag according to any one of claims 1 to 6 , wherein the packaging film is laminated with aluminum foil.

Further, the invention according to claim 8 is
8. The packaging bag according to any one of claims 1 to 7 , wherein the packaging film is laminated with a plastic film deposited with an inorganic compound.

According to the present invention, a hexahedral packaging bag formed by using a packaging film and a paperboard or the like in part is self-supporting, easy to open, easy to take out the contents, and resealable. It is possible to provide a packaging bag with

The packaging bag according to the present invention can stand on its own because a bottom plate made of a packaging film is sealed to the body so as to form a rectangular surface in the lower part of the body.

A horizontal unsealing line is provided on the folding line of the upper end of the front surface of the body. It is easy to open the book because there is a planned line for opening the book.

In addition, since the paperboard has perforations on the top surface and is attached to the inner side of the packaging film, the perforations can be broken to provide an opening in the top surface of the packaging bag. .

By forming this opening using a paperboard, it is possible to facilitate taking out of the contents. Furthermore, since it is paperboard, it can be easily resealed after it has been opened.

In particular, according to the invention described in claim 2, the hexahedral packaging bag using a packaging film and a paperboard or the like in part is self-supporting, easy to open, and easy to take out the contents. Therefore, it is possible to provide a packaging bag that is flexible and resealable.

That is, by forming the perforations in a U-shape, the rectangular opening is fixed on one side so that it is difficult to separate, and in addition to being resistant to repeated opening and resealing, resealing itself is easy, and a certain degree of sealing is achieved. It is possible to maintain sexuality.

In particular, according to the third aspect of the present invention, the hexahedral packaging bag using the packaging film and a paperboard or the like in part is self-supporting, easy to open, and easy to take out the contents. Therefore, it is possible to provide a packaging bag that is flexible and resealable.

That is, the packaging film on the top surface and the paperboard are pasted together by heat sealing on the outside of the two vertical unsealing lines, so that opening can be done along the longitudinal unsealing lines. When doing so, the adhesion on the outer side of the planned unsealing line in the vertical direction acts as a pressure, making it possible to unseal the package more easily and stably.

In particular, according to the invention described in claim 4, the hexahedral packaging bag using a packaging film and a paperboard or the like in part is self-supporting, easy to open, and easy to take out the contents. Therefore, it is possible to provide a packaging bag that is flexible and resealable.

That is, when the packaging film on the top surface and the paperboard are laminated together, the easy peel film is laminated on the paperboard and the entire surface is laminated, so that even when opening along the planned opening line in the vertical direction , the packaging film on the top surface can be peeled off, and at the same time, by bonding on the outside of the planned opening line in the vertical direction, that part acts as a pressure, making it possible to open more easily and stably. .

In particular, according to the fifth aspect of the invention, the hexahedral packaging bag made of the packaging film and a paperboard or the like in part is self-supporting, easy to open, and easy to take out the contents. and a resealable packaging bag.

That is, by using a thick plastic film in place of paperboard, it is possible to improve performance such as water resistance or oil resistance, which cannot be obtained with paperboard.

In particular, according to the sixth aspect of the present invention, the hexahedral packaging bag using the packaging film and the paperboard or the like in part is self-supporting, easy to open, and easy to take out the contents. Therefore, it is possible to provide a packaging bag that is flexible and resealable.

That is, the paperboard or thick plastic film is attached to the wrapping film of the front folded portion, so that the rigidity of the front folded portion is increased, and the planned opening line in the horizontal direction and the planned opening line in the vertical direction are opened. is effective in making it easier and more stable.

In particular, according to the seventh aspect of the present invention, the hexahedral packaging bag using the packaging film and a paperboard or the like in part is self-supporting, easy to open, and easy to take out the contents. Therefore, it is possible to provide a packaging bag that is flexible and resealable.

That is, since the front folded portion is releasably adhered to the front surface of the trunk portion, it is possible to prevent unintended opening and facilitate opening by fingers.

In particular, according to the eighth aspect of the invention, the hexahedral packaging bag made of a packaging film and a paperboard or the like in part is self-supporting and has an easy-opening mechanism, so that it can be opened more easily. , it is possible to provide a resealable packaging bag from which the contents can be easily taken out.

In other words, the planned opening line in the horizontal direction and the planned opening line in the vertical direction are half-cut lines on the packaging film by the laser beam, so that an easy-to-open mechanism can be achieved, and a highly efficient and stable production method can be achieved. .

In particular, according to the ninth aspect of the invention, the hexahedral packaging bag using the packaging film and a paperboard or the like in part is self-supporting, easy to open, and easy to take out the contents. and a resealable packaging bag.

In other words, by attaching metal foil such as aluminum, in addition to obtaining stability during half-cutting, gas barrier properties are added to make it possible to store the contents for a long time and prevent deterioration. is possible.

In particular, according to the tenth aspect of the present invention, the hexahedral packaging bag using the packaging film and a paperboard or the like in part is self-supporting, easy to open, and easy to take out the contents. and a resealable packaging bag.

In other words, by attaching a plastic film with a vapor deposition layer of an inorganic compound, gas barrier properties are imparted, enabling long-term storage of contents and prevention of deterioration even in applications where the use of metal foil such as aluminum is inappropriate. It is possible to use a packaging bag that is

FIG. 1 is a schematic perspective view for explaining each component of one embodiment of a packaging bag according to the present invention. FIG. 2 is a schematic cross-sectional view for explaining one embodiment of the packaging bag according to the present invention. FIG. 3 is a cross-sectional schematic diagram for explaining another embodiment of the packaging bag according to the present invention, in which the top and bottom packaging films are continuous with the body. FIG. 4 is a cross-sectional schematic diagram for explaining still another embodiment of the packaging bag according to the present invention, in which the front folded portion is adhered to the body portion. FIG. 5 is a schematic perspective view for explaining a state before opening an embodiment of the packaging bag according to the present invention. FIG. 6 is a schematic perspective view for explaining an unsealed state of one embodiment of the packaging bag according to the present invention. FIG. 7 is a schematic perspective view for explaining a state in which an opening is provided after opening an embodiment of the packaging bag according to the present invention. FIG. 8 is a schematic perspective view for explaining a state in which one embodiment of the packaging bag according to the present invention is once opened, provided with an opening, and then resealed.

Hereinafter, the present invention will be described in more detail with reference to FIGS. 1 to 8. FIG. However, the invention is not limited to the examples shown here. The invention is limited by the claims.

FIG. 1 is a schematic perspective view for explaining each component of one embodiment of a packaging bag according to the present invention.

The packaging bag (100) according to the present invention is a hexahedral packaging bag made of a packaging film and a paperboard or the like in part. It consists of a top surface (1) and a bottom surface (2).

The four sides of the barrel (14) are the left side of the barrel (3), the right side of the barrel (4), the front side of the barrel (5), and the back side of the barrel (6). Furthermore, the top surface (1) and the bottom surface (2) are added, and the packaging bag (100) constitutes a hexahedron.

The bottom surface (2) has a bottom plate made of a packaging film sealed to the body (14) at the lower part of the body (14), and is sealed with a sealing part (11) between the bottom plate and the body. forming. This allows the packaging bag (100) to stand on its own.

Of the four sides of the body (14), the front body (5) and the back (6) of the body consist of two wrapping films, the left side (3) of the body and the right side (4) of the body. ), the packaging film continuous from the front surface (5) of the trunk and the packaging film continuous from the rear surface (6) of the trunk are sealed in such a way that the surfaces to be the inside of the packaging bag face each other at the center of each. A body left side seal portion (8) and a body right side seal portion (9) are formed for sealing.

In addition, in the upper part of the trunk (14), there is a rectangular top surface (1), a packaging film that continues forward from the top surface (1), and a packaging film that continues upward from the front surface (5) of the trunk. protrudes from the top surface to form an overlapped portion (7) of the packaging film and a sealing portion (12) at the leading end thereof.

The overlapping part (7) of the packaging film and the sealing part (12) at the leading end thereof are folded back at the upper end of the body front face (5) to form a front folded part (19) on the top of the body front face (5), And it is fixed covering the upper front half of both sides of the left and right torso.

A paperboard is attached to the top surface (1). The paperboard is not shown in the example shown in FIG. 1 because it is laminated to the inside of the container on the top surface. The paperboard is effective as a reinforcing material for increasing the rigidity of the top surface, and the opening for taking out the contents of the packaging bag can be perforated in the paperboard so that it can be opened with fingers. The paperboard may be a paperboard having an easy peel film laminated on its surface, or a thick plastic film may be used in place of the paperboard.

The paperboard and the packaging film of the top surface (1) are bonded together on the left and right outside of the vertical unsealing line (10) described below. In the case of a paperboard with an easy peel film laminated on the surface, the entire surface can be bonded together by the adhesive force of the easy peel film. The same is true when a thick plastic film is used in place of paperboard.

In addition, a lateral unsealing line is provided at the fold line of the front folded portion (19) at the upper end of the front surface (5) of the body portion (5). In the example shown in FIG. 1, the horizontal unsealing line at the upper end of the front surface of the body (5) is covered under the front folded portion (19), and is not displayed in the example shown in FIG. not

Furthermore, the vertical direction from the packaging film on both the front and back sides of the front folded part (19) to the top surface (1) continues in the direction perpendicular to the horizontal unsealing line at the upper end of the front surface (5) of the body part (5). , and a notch (13) connected to the vertical opening line (10) can be provided at the tip of the front folded part (19).

The packaging bag (100) according to the present invention is attached to the top surface (1) by opening along the planned opening line (10) in the horizontal direction and along the planned opening line (10) in the vertical direction using the notch (13) as a trigger. It is possible to expose paperboard that has been laminated to its surface, or that has an easy peel film laminated to its surface.

As described above, the paperboard and the packaging film of the top surface (1) are bonded together on the left and right sides of the vertical unsealing line (10). Although there is no limitation on the bonding means and method, it is also possible, for example, to provide a heat-sealable layer on paperboard and bond the left and right outer sides of the vertical opening line (10) by heat sealing. is.

In this case, in the area sandwiched between the two vertical unsealing lines (10), the packaging film and the paperboard on the top surface (1) are not bonded together. The packaging film on side (1) can be easily peeled off to expose the paperboard.

At the same time, since the paperboard and the packaging film on the top surface (1) are bonded together in the regions on the left and right outside of the vertical unsealing line (10), the two vertical direction It is possible to facilitate opening along the planned opening line (10).

Further, as described above, when using a paperboard with an easy-peel film laminated on the surface, the adhesive force of the easy-peel film allows the entire surface to be bonded to the packaging film on the top surface (1).

In this case, even in the area sandwiched between the two vertical unsealing lines (10), the packaging film and the paperboard on the top surface (1) are laminated with an easy peel film, but they are easily peeled off. Therefore, when the two vertical unsealing lines (10) are opened, the packaging film on the top surface (1) can be easily peeled off to expose the paperboard.

In addition, since the paperboard and the packaging film on the top surface (1) are attached to each other with an easy-peel film, no direct force is applied to the areas on the left and right sides of the longitudinal unsealing line (10). Therefore, it does not peel off, and it plays a role of pressing from both sides, and it can be easily opened by two vertical unsealing lines (10).

These mechanisms are the same when a thick plastic film is used instead of paperboard.

The paperboard is provided with perforations, and in order to remove the packaging film on the top surface (1) to expose the paperboard and form an opening in the exposed paperboard, the paperboard is cut along the perforations provided in the paperboard. is opened to form an opening in the top surface (1).

Although the shape of the perforated opening is not limited, the perforations can be formed in a U-shape to form three sides of a rectangle, and the remaining one side of the rectangle is fixed so as to be difficult to separate. Therefore, in addition to being resistant to repeated opening and resealing around this one side, resealing itself is easy, and a certain level of sealing performance can be maintained.

When the planned opening line (10) in the horizontal direction and the planned opening line (10) in the vertical direction are, for example, half-cut lines to the packaging film by laser light, an easy opening mechanism triggered by the notch (13) is a finger or the like. Thus, the packaging bag (100) can be opened easily and stably.

The half-cut line on the packaging film by laser light may be a continuous straight line or curved line along the edge of the paperboard, or it may be a broken line as long as it has an easy opening mechanism.

With respect to the present invention, the paperboard mentioned in the description so far can be replaced with a thick plastic film.

FIG. 2 is a schematic cross-sectional view for explaining one embodiment of the packaging bag according to the present invention.

The example shown in FIG. 2 is a cross-sectional view of the central portion of the packaging bag (100) according to the present invention as viewed from the right side (4) side of the body. They are connected and sealed by a seal (11).

The top surface (1) and the rear surface of the trunk (6) are sealed and continuous with a sealing portion (16) between the top surface and the rear surface of the trunk. It is sealed and continuous with the front folded portion (19) at the seal portion (17).

These seals give rigidity to the packaging bag (100), ensure its self-standing, and maintain the shape of the packaging bag (100) even when the top surface (1) is opened. It is effective in improving sexuality.

The example shown in FIG. 2 is an example in which a paperboard (15) is attached to the top surface (1), and this attachment imparts rigidity to the top surface (1). Since the top surface (1) has high mechanical strength, it is effective in protecting the contents as a packaging container.

The paperboard can be made of a thick plastic film, and in this case, in addition to the rigidity obtained with the paperboard, it is possible to impart functions such as water resistance and oil resistance.

In addition, in the operation of opening the packaging bag (100), a horizontal opening line (20) is provided at the folding line of the upper end of the body front surface (5). Since the longitudinal unsealing line is provided continuously in the perpendicular direction from both the front and back surfaces of the front folded portion (19) to the top surface (1), the packaging film can be easily unsealed. In the example shown in FIG. 2, the lateral unsealing line (20) is provided from the front to the back of the figure.

There are no particular limitations on the means and method for forming the planned opening line (20) in the horizontal direction or the planned opening line in the vertical direction. It is also possible to use an easy-to-open mechanism. For the easy-opening mechanism, for example, a method utilizing molecular orientation of a plastic film can be used or used together.

In addition, the paperboard exposed by opening the packaging film on the top surface (1) can form an opening by opening along the perforations, so that the contents can be taken out.

Furthermore, when the packaging bag (100) is resealed, it can be restored to its original shape before being resealed, which is effective in preventing dust and foreign matter from entering.

FIG. 3 is a cross-sectional schematic diagram for explaining another embodiment of the packaging bag according to the present invention, in which the top and bottom packaging films are continuous with the body.

The example shown in FIG. 3 is a cross-sectional view of the central portion of the packaging bag (100) according to the present invention, viewed from the right side (4) side of the body portion.

That is, in the example shown in FIG. 3, the top surface (1) and the back surface (6) of the trunk portion are continuous with the packaging film and are sealed by the seal portion (16) on the top surface and the back surface of the trunk portion. ing. In addition, the top surface (1) is connected to the sealing portion (17) between the top surface and the front folded portion (17), and is also sealed and continuous to the front folded portion (19).

As for the bottom surface (2), the body and the bottom plate (21) are continuous with the packaging film, and the bottom plate and the body are sealed and continuous with the sealing part (11).

Another difference from the example shown in FIG. 2 is that the paperboard is attached not only to the top surface but also to the front folded portion (19). These paperboards are discontinuous, with two paperboards laminated to each other.

The effect of bonding with the top surface (1) is as described above. In addition, since the bonding with the front folded portion (19) has the effect of imparting rigidity to this portion, it is easier to open along the planned opening line (20) in the horizontal direction and along the planned opening line (19) in the vertical direction. And it is effective to perform stably.

In addition, in the operation of opening the packaging bag (100), a horizontal opening line (20) is provided at the folding line of the upper end of the body front surface (5). Since two longitudinal unsealing lines are provided from both front and back surfaces of the front folded portion (19) to the top surface (1) continuously in the perpendicular direction, the packaging film can be easily unsealed. In the example shown in FIG. 2, the lateral unsealing line (20) is provided from the front to the back of the drawing.

There are no particular limitations on the means and method for forming the planned opening line (20) in the horizontal direction or the planned opening line in the vertical direction. It is also possible to use an easy-to-open mechanism. For the easy-opening mechanism, for example, a method utilizing molecular orientation of a plastic film can be used or used together.

In addition, since the paperboard exposed by opening the packaging film on the top surface (1) can be opened along the perforations to form an opening, it is possible to take out the contents.

Furthermore, when the packaging bag (100) is resealed, it can be restored to its original shape before being resealed, which is effective in preventing dust and foreign matter from entering.

FIG. 4 is a cross-sectional schematic diagram for explaining still another embodiment of the packaging bag according to the present invention, in which the front folded portion is adhered to the body portion.

The example shown in FIG. 4 is, like FIGS. 2 and 3, a cross-sectional view of the central portion of the packaging bag (100) according to the present invention, viewed from the right side (4) side of the body portion. ) are connected and sealed by a body-to-body seal (11).

As in the example shown in FIG. 2, the top surface (1) and the back surface of the trunk (6) are sealed and continuous with a sealing portion (16) on the top surface and the back surface of the trunk. is also sealed and continuous with the front folded portion (19) at the sealing portion (17) of the top surface and the front folded portion. The tip of the front folded portion (19) is sealed with the tip seal portion (12).

2, in the example shown in FIG. 4, the paperboard (15) is bonded to the packaging film of the top surface (1), and the top surface (1) is rigid. can be given. This reinforcing effect makes it possible to provide a resealable opening on the top surface (1), and is also effective in protecting the contents as a packaging container.

The characteristic point in the example shown in FIG. 4 is that the front folded part (19) is adhered to the body front face (5) at the adhesive part (31), and the body front face (5) can be peeled off. ) is glued to the top.

This adhesive part (31) is like the example shown in FIG. The entire front folded portion (19) may be used, or the adhesive portion (31) may be provided as a spot as long as it is peelable and can avoid careless opening.

By this adhesion, the front folded part (19) can avoid the risk of unexpected peeling or opening due to external force during movement or handling in distribution, inventory, exhibition, sale, etc. after manufacture of the product. be.

In addition, even when unsealed, the left and right outer portions of the vertical unsealing line of the folded portion (19) remain adhered to the front surface (5) of the trunk portion (5), so that the shape of the packaging bag, especially the upper portion, is maintained. is also effective.

In addition, in the operation of opening the packaging bag (100), a horizontal opening line (20) is provided at the folding line of the upper end of the body front surface (5). Since the longitudinal unsealing line is provided continuously in the perpendicular direction from both the front and back surfaces of the front folded portion (19) to the top surface (1), the packaging film can be easily unsealed. In the example shown in FIG. 4, the horizontal unsealing line (20) is provided from the front to the back of the drawing.

There are no particular limitations on the means and method for forming the planned opening line (20) in the horizontal direction or the planned opening line in the vertical direction. It is also possible to use an easy-to-open mechanism. For the easy-opening mechanism, for example, a method utilizing molecular orientation of a plastic film can be used or used together.

In addition, since the paperboard exposed by opening the packaging film on the top surface (1) can be opened along the perforations to form an opening, it is possible to take out the contents.

Furthermore, even when the packaging bag (100) is resealed, it can be restored to its original shape before being resealed, which has a certain effect in preventing dust and foreign matter from entering.

FIG. 5 is a schematic perspective view for explaining a state before opening an embodiment of the packaging bag according to the present invention.

As described above, in the present invention, at least the top surface (1) is bonded with the packaging film and the paperboard (15), and this bonding provides rigidity to the top surface (1). The high mechanical strength of the top surface (1) is effective in protecting the contents as a packaging container and improving suitability for stacking.

A notch (13) connected to the longitudinal unsealing line (10) can be provided at the lower end of the front folded part (19). Unsealing along (10) is possible.

This opening exposes the paperboard and the perforations (27) in the area sandwiched between the two vertical opening lines (10). An opening can be formed in the top surface (1) by tearing the perforation (27).

The vertical unsealing line (10) is provided on the front and back of the front folded portion (19). As described above, the longitudinal opening line (10) is not particularly limited in its formation method, but it is possible, for example, to form a half-cut line on the packaging film with a laser beam. In this case, half-cut lines can be formed stably with higher productivity.

In addition, when the half-cut line is a half-cut to the packaging film by laser light, the packaging bag can be easily opened with fingers or the like as an easy-to-open mechanism triggered by the notch (13). . The half-cut line on the packaging film by laser light may be a continuous straight line or curved line, or may be a broken line as long as it functions as an easy-to-open mechanism.

The same is true for the horizontal unsealing line (20) provided at the fold line that forms the valley fold with the front folded portion (19) at the upper end of the body front surface (5). This part is shown in the example shown in FIG. 5, where the lateral unsealing line (20) at the upper end of the torso front face (5) is covered under the front fold (19). not

Further, in the example shown here, a display section (40) is provided at the central portion of the front surface (5) of the body section (100) of the packaging bag (100) to display information about the contents.

In addition to information about the contents, it is also possible to display logos of products and manufacturers, photos, designs, and barcodes for inventory, distribution, and sales. good. The location and number of display units (40) are arbitrary.

FIG. 6 is a schematic perspective view for explaining an unsealed state of one embodiment of the packaging bag according to the present invention.

As described above, the packaging bag (100) according to the present invention is provided with a vertical unsealing line (10) extending from the front folded portion (19) to the top surface (1). In addition, a horizontal unsealing line (20) is provided at the folding line formed by the valley fold with the front folding portion (19) at the upper end of the front surface (5) of the trunk portion (5).

A paperboard (15) and a perforation (28) provided at a position that becomes an opening on the top surface (1) by opening along the planned opening line (20) in the horizontal direction and the planned opening line (10) in the vertical direction. can be exposed. By tearing the perforations (27), it is possible to form an opening in the paperboard (15), and the torn part becomes a resealing lid (28) when the packaging bag is resealed. .

To open along the horizontal planned opening line (20) and the vertical opening planned line (10), pull up the front folded part (19) with your fingers and then pull it in the direction of the arrow (24) in the figure. be able to.

At this time, a notch (13) connected to the vertical unsealing line (10) can be provided at the lower end of the front folded part (19), and the notch (13) can be used as a trigger for opening more easily. can.

Furthermore, by pulling in the direction of the arrow (24) in the figure, the plastic film (3) at the front folded portion and the top packaging film (29) connected thereto can be separated and removed from the packaging bag. .

For separation and removal from the packaging bag (100), although not shown in FIG. can be provided, which is effective and preferable for smoother separation and removal work.

After this separation and removal, the front surface of the trunk (5) is exposed in the area sandwiched between the two vertical unsealing lines (10) at the top, and the upper end of the upper end (18) of the front surface of the trunk is exposed. ) in FIG.

The upper end portion (18) of the front surface of the trunk portion is also the portion where the planned unsealing line (20) in the horizontal direction was provided.

In the example shown in FIG. 6, the perforation (27) is provided with another U-shape. Three sides are provided, and the side parallel to the back of the body is not provided. Further, a handle (34) for easier opening is provided in the form of slightly curving one side of the U-shaped perforation (27).

In this way, as a result of peeling off the packaging film (29) on the top surface (1), the paperboard (15) and the perforations ( 27) is exposed, and outside the two vertical opening lines (10), the parts where the paperboard (15) and the remaining top packaging film (25) are laminated are on both sides of the body. remain in contact with the face.

For this part, for example, the paperboard (15) may be provided with a heat-sealable layer, and only the two longitudinal opening lines (10) outside the intended opening lines (10) may be heat-sealed and bonded together.

Alternatively, an easy peel film is laminated on a paperboard and the entire surface is attached, and the top surface (1) is easy to peel off in the area sandwiched between the two vertical opening lines (10). As in the case of heat sealing, the portion where the paperboard (15) and the remaining top packaging film (25) are stuck together remains in contact with both sides of the body.

In this case, the portion where the paperboard (15) and the remaining packaging film (25) on the top surface are bonded together effectively functions as a presser for the paperboard (15).

FIG. 7 is a schematic perspective view for explaining a state in which an opening is provided after opening an embodiment of the packaging bag according to the present invention.

As described above, by opening along the planned opening line (20) in the horizontal direction and the planned opening line (10) in the vertical direction, the paperboard (15) is provided on the top surface (1) and the opening is provided. A perforation (27) may be exposed and an opening (22) may be formed in the paperboard (15) by tearing the perforation (27). Contents (26) can be removed from this opening (22).

Moreover, once the package is unsealed to form the opening (22), it can be repeatedly unsealed and resealed. This is because one side of the U-shaped opening (22) formed by perforations (27) is not a perforation but a fold (33). 28) can be opened and closed repeatedly. At this time, providing a handle (34) is effective in facilitating opening and closing.

FIG. 8 is a schematic perspective view for explaining a state in which one embodiment of the packaging bag according to the present invention is once opened, provided with an opening, and then resealed.

In the example shown in FIG. 8, in a state where the packaging film is resealed after being opened once and an opening is provided, the packaging film is in the region sandwiched between the two vertical unsealing lines (10) of the front folded portion (19). , and the top wrapping film (29) have been removed and are therefore not shown in FIG.

The opening is returned to the top surface (1) with the resealing lid (28) centered on the folding line (29), and is resealed by fitting into the paperboard on the top surface (1). That is, since the package can be resealed after returning to its original shape, it has a certain effect in preventing dust and foreign matter from entering.

As described above, according to the present invention, a hexahedral packaging bag using a packaging film and a paperboard or the like in part is self-supporting, easy to open, and easy to take out the contents. A resealable packaging bag can be provided.

In addition, the packaging bag according to the present invention does not add any special limitation to the configuration of the laminate to be used other than that shown in the claims, but the material configuration for realizing the packaging bag (100) according to the present invention, Add more explanation about what is generally available.

As mentioned above, the packaging bag (100) according to the invention is based on a packaging film. The packaging film is made of a plastic film made of a polymer resin composition. Polyimide or the like can be used, and is appropriately selected depending on the application.

In particular, when polypropylene or polyethylene terephthalate is used as a plastic film, it is preferable in terms of film strength and cost. In addition, when a stretched polyamide film is used, toughness against puncture and toughness against impact can be imparted.

Also, the plastic film can be laminated with another layer via an adhesive layer to form a laminate. The layer structure, material structure, thickness, etc. of the laminate can be appropriately designed according to the quality required for the packaging bag (100).

For example, for the purpose of improving the storage stability of the contents, if necessary, an opaque layer such as a colored film that blocks ultraviolet rays can be provided in the laminate using a plastic film as a base material. Alternatively, a gas barrier layer can be provided in a laminate having a plastic film as a base material.

For example, a gas barrier film in which a gas barrier layer made of an inorganic compound is deposited on the surface of a plastic film can be used. Also, a metal foil such as aluminum foil can be used as the gas barrier layer. In either case, it is effective in improving the preservability of the contents.

In the case of the gas barrier film, the packaging film used is a film made of a polymer resin composition, such as polyolefin (polyethylene, polypropylene, etc.), polyester (polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, etc.), polyamide. (nylon-6, nylon-66, etc.), polyimide, etc. can be used, and are appropriately selected according to the application. In particular, when polypropylene or polyethylene terephthalate is used as the plastic film substrate, it is preferable in terms of film strength and cost.

In the case of a gas barrier film, the gas barrier layer can be composed of a vapor deposition layer of an inorganic compound and a coating layer. After providing an anchor coat on a plastic film, the vapor deposition layer and the coating layer are sequentially provided.

Urethane acrylate, for example, can be used for the anchor coat layer of the gas barrier film. For the formation of the anchor coat layer, a coating method that applies a printing method such as gravure coating with a paint in which a resin is dissolved in a solvent is used, and a generally known coating method can be used to form a coating film.

As a method for forming a vapor deposition layer, an inorganic compound such as SiO or AlO is coated on a plastic film provided with an anchor coat layer using a vacuum vapor deposition method, and an inorganic compound layer can be formed by a vacuum vapor deposition method. . Incidentally, the thickness of the deposited layer is preferably 15 nm to 30 nm.

As a method of forming the coating layer, an aqueous solution or water/alcohol A coating agent containing a mixed aqueous solution as a main component is applied on a film, and the film is dried by heating to form an inorganic compound layer by a coating method, whereby a coating layer can be obtained. At this time, the adhesion to the anchor coat layer can be improved by adding a silane monomer to the coating agent.

The inorganic compound layer has gas barrier properties even if it is only a coating film formed by a vacuum deposition method, but a coating layer, which is an inorganic compound layer formed by a coating method, is formed over a deposited layer, which is an inorganic compound layer formed by a vacuum deposition method, to form a gas barrier layer. be able to.

By combining these two layers, a reaction layer of both layers is generated at the interface between the inorganic compound layer by the vacuum deposition method and the inorganic compound layer by the coating method, or the inorganic compound layer by the coating method becomes the inorganic compound layer by the vacuum deposition method. A dense structure is formed by filling and reinforcing defects such as pinholes, cracks, and grain boundaries, or micropores.

As a result, the gas barrier film achieves higher gas barrier properties, moisture resistance, and water resistance, and is flexible enough to withstand deformation due to external force, so that it is suitable as a packaging material.

Moreover, when SiO is used as the gas barrier layer, the coating is transparent, so that the contents can be seen from the outside of the packaging material. These may be properly used depending on the application and required quality.

The sealant layer is made possible by stacking two packaging films so that the sealant layers face each other and heat-sealing them by applying heat and pressure to adhere them to each other and form a packaging bag.

Among thermoplastic resins, polyolefin-based resins are generally used as the material for the sealant layer. Specifically, low-density polyethylene resin (LDPE), medium-density polyethylene resin (MDPE), linear low-density polyethylene resin. (LLDPE), ethylene-vinyl acetate copolymer (EVA), ethylene-α olefin copolymer, ethylene-methacrylic acid resin copolymer, etc. can be used.

In addition, blended resins of polyethylene and polybutene, polypropylene resins such as homopolypropylene resin (PP), propylene-ethylene random copolymer, propylene-ethylene block copolymer, propylene-α-olefin copolymer, etc. may be used. can be done.

The sealant layer can be formed by forming a film of molten resin using an extruder or the like to form a layer on the laminate. Alternatively, it is also possible to form a sealant layer on the surface of the packaging film by laminating materials that have been formed into films in advance.

As in the examples shown in FIG. 1 and subsequent figures, the formation of the display part (40) is aimed at improving the image of the product, displaying necessary information about the contents, and improving the design of the packaging film. can be provided by printing on a layer visible from the outside of a packaging bag based on. It may be provided on the outermost layer of the packaging bag.

There are no particular restrictions on the printing method and printing ink here, but among the known printing methods, printability on plastic films, design properties such as color tone, adhesion, safety as food containers, etc. may be selected as appropriate.

For example, a gravure printing method, an offset printing method, a gravure offset printing method, a flexographic printing method, a silk screen printing method, an inkjet printing method, or the like can be used. Among them, the gravure printing method can be preferably used in terms of productivity and high definition of the pattern.

As described above, according to the present invention, a hexahedral packaging bag using a packaging film and a paperboard in part is self-supporting, easy to open, easy to take out the contents, and reusable. It is possible to make it possible to provide packaging bags with sealing properties.

The present invention will now be described in more detail with reference to examples and comparative examples. However, the invention is not limited to the examples shown here. The invention is limited by the claims.

A comparison was made between a conventional confectionery container and a packaging bag according to the present invention for snacks.
As Example 1, a packaging bag according to the present invention is used. In Comparative Examples 1 to 3, conventional confectionery containers were taken up.

<Example 1>
The packaging bag according to the present invention has the following materials and configurations.
From the outside of the packaging bag,
Polyethylene terephthalate film (thickness 12 μm) / aluminum foil (thickness 7 μm) / linear low-density polyethylene (thickness 30 μm)
The shape is
(Bottom) 80 mm square x (Height) 92 mm
and

<Comparative Example 1>
It is a conventionally used pillow pouch.

<Comparative Example 2>
It is a conventionally used paper cup container.

<Comparative Example 3>
It is a conventionally used paper box.

The evaluation items were the following 11 items.
(1) transport efficiency,
(2) autonomy,
(3) loadability,
(4) Display-made,
(5) material use area,
(6) Sealability,
(7) price;
(8) unsealability,
(9) Ease of eating,
(10) resealability after opening,
(11) Easy disposal.

<Evaluation method>
For each evaluation item,
◯: Good △: Acceptable ×: Not acceptable.

In the comprehensive evaluation, for all evaluation items, those not evaluated as (x: unacceptable) were evaluated as 0 in the comprehensive evaluation.

Table 1 shows the evaluation results.

As is clear from the evaluation results shown in Table 1 and the comprehensive evaluation thereof, the packaging bag according to the present invention (Example 1) was evaluated as ◯ in all of the evaluation items. It is also superior to conventional packaging containers (Comparative Examples 1 to 3), indicating that the problems can be solved by the present invention.

The evaluation results for each evaluation item are discussed below.

(1) Regarding transportation efficiency, Example 1 (packaging bag according to the present invention) is evaluated as ◯.
Since the packaging bag according to the present invention is hexahedral, it is possible to reduce the dead space, and the evaluation was ◯.

On the other hand, both Comparative Example 1 (pillow pouch) and Comparative Example 2 (paper cup container) have a large dead space, resulting in a large waste of space, and are evaluated as x.
Comparative Example 3 (paper box) is a rectangular parallelepiped, so it is possible to reduce the dead space, and is evaluated as ◯.

(2) With regard to self-support, Example 1 (packaging bag according to the present invention) is evaluated as ◯.
This is because the packaging bag according to the present invention has a rectangular expanse at the bottom, and the four sides of the rectangle are sealed and thickened, increasing the rigidity and increasing the self-standing. became.

On the other hand, in Comparative Example 1 (pillow pouch), it was difficult to provide a flat surface on the packaging bag, and the self-standing property was poor, so it was evaluated as x.

(3) Regarding loadability, Example 1 (packaging bag according to the present invention) is evaluated as ◯.
This is due to the ease of stacking due to the hexahedral shape of the packaging bag according to the invention.
In addition, since cardboard is attached to the top surface and the front folded portion, the rigidity is increased, contributing to the improvement of stackability.

On the other hand, in Comparative Example 1 (pillow pouch), it was difficult to provide a flat surface on the packaging bag, and stacking was difficult, so it was evaluated as x.

(4) With respect to displayability, Example 1 (packaging bag according to the present invention) is evaluated as ◯.
This is because the packaging bag according to the present invention has an expanded rectangular bottom surface, and the four sides of the rectangle are sealed and thickened, so that the rigidity is increased and the self-sustainability is enhanced. It was possible to display it by making it stand alone, and it was evaluated as 0.

On the other hand, in Comparative Example 1 (pillow pouch), it is difficult to provide a flat surface on the packaging bag, and it is poor in self-standing, so it is difficult to stand on its own even in store display, so it was evaluated as ×. .

(5) Regarding the area of material used, Example 1 (packaging bag according to the present invention) is evaluated as ◯. This is because the packaging bag according to the present invention is a hexahedron and can reduce the dead space, and there is little overlapping of materials other than the sealing part, so it was evaluated as ◯.

On the other hand, Comparative Example 1 (pillow pouch) has a large dead space, resulting in a lot of wasted space, and a large material usage area, so it is evaluated as x. The reason is the same as that of Comparative Example 2 (paper cup container), and the evaluation is Δ.

(6) As for sealing performance, Example 1 (packaging bag according to the present invention) is evaluated as ◯.
This is because the packaging bag according to the present invention has all the joint parts of the plastic film sealed and sealed, and the easy-to-open mechanism uses a half-cut, so there is no penetrating part. became.

On the other hand, Comparative Example 2 (paper cup container) has a limited sealability due to the use of paper as a material, and is evaluated as Δ.
Comparative Example 3 (paper box) was evaluated as x because it was difficult to fold and seal the assembled portion.

(7) As for the price, Example 1 (packaging bag according to the present invention) is evaluated as ◯.
This is because the packaging bag according to the present invention has a configuration in which the packaging film is used as the main material and paperboard is used in part, and it is superior because it can be realized by sealing and half-cutting, and was evaluated as ◯.

On the other hand, Comparative Example 2 (paper cup container) uses paper as a material, which has limitations in sealing performance and water resistance, so it is essential to apply processing such as waterproofing, and a lid is attached. It is an x evaluation because it also costs a lot.

In Comparative Example 3 (paper box), paper, which has limited sealability and water resistance, is used as a material, so it is essential to apply processing such as waterproofing, and punching and creasing for assembling into a box. etc. are also necessary and costly, so it is evaluated as △.

(8) Regarding the openability, Example 1 (packaging bag according to the present invention) is evaluated as ◯.
This is because the packaging bag according to the present invention has a notch and a planned opening line on the front folded part and the top surface, and a paperboard is attached to this part, so that it is easy to open. became.

On the other hand, Comparative Example 1 (pillow pouch), Comparative Example 2 (paper cup container), and Comparative Example 3 (paper box) are all evaluated as ◯.

With regard to ease of eating (9), Example 1 (packaging bag according to the invention) is evaluated as ◯.
This is because the packaging bag according to the present invention has a large top opening and can easily retain its shape, making it easy to take out the contents.

On the other hand, in Comparative Example 1 (pillow pouch), the opening tends to have an irregular shape, and it is difficult to maintain a constant shape. Evaluation.

Regarding the resealability after opening (10), Example 1 (packaging bag according to the present invention) is evaluated as ◯.
This is because the packaging bag according to the present invention has rigidity due to the fact that the front folded part and the top surface are pasted with paperboard, so that it is possible to maintain the shape as a lid, and it is also excellent in resealability after opening. It depends.

On the other hand, in Comparative Example 1 (pillow pouch), it was difficult to obtain a large opening, it was difficult to maintain a certain shape, and the packaging film was made of a flexible material, making it difficult to reseal after opening. It is x evaluation because there is.
In addition, in Comparative Example 2 (paper cup container), although the body portion of the container is rigid, the lid portion is generally made of a flexible material, which makes it difficult to reseal after opening as it is. Therefore, it is a △ evaluation.

Regarding easy disposal (11), Example 1 (packaging bag according to the present invention) is evaluated as ◯.
This is because the material of the packaging bag is composed of paper and packaging film.
In addition, the volume when crushed is relatively small, and it is effective in reducing the volume of waste.

On the other hand, in Comparative Example 2 (paper cup container), since the body portion and the bottom plate of the container have rigidity, the volume when crushed is difficult to decrease, and it is difficult to reduce the volume of waste. It is x evaluation.

Also, in Comparative Example 3 (paper box), as in Comparative Example 2 (paper cup container), since the entire container has rigidity, it is difficult to reduce the volume when crushed, making it difficult to reduce the volume of waste. It is x evaluation because it is.

Thus, the packaging bag according to the present invention (Example 1) was evaluated as ◯ in all evaluation items. On the other hand, Comparative Example 1 (pillow pouch), Comparative Example 2 (paper cup container), and Comparative Example 3 (paper box) all have multiple items of △ to × evaluation among the evaluation items, and comprehensive evaluation Only Example 1 was able to obtain a ◯ evaluation.

That is, according to the present invention, a hexahedral packaging bag using a packaging film and a paperboard in part is self-supporting, easy to open, easy to take out the contents, and resealable. We were able to verify that it is possible to provide a packaging bag that is flexible.

REFERENCE SIGNS LIST 1 Top surface 2 Bottom surface 3 Body left side 4 Body right side 5 Body front 6 Body back 7 Overlapping portion of packaging film 8: Body portion left side seal portion 9: Body portion right side surface seal portion 10: Vertical unsealing line 11: Bottom plate and body portion seal portion 12: Tip seal portion 13 Notch 14 Body 15 Cardboard 16 Sealing portion 17 between the top surface and the rear surface of the body portion Sealing portion 18 between the top surface and the front folded portion 18 Upper end of front side body portion Part 19... Front folded part 20... Lateral unsealing planned line 21... Bottom plate 22... Opening 23... Arrow 24... Arrow 25... Remaining packaging film on top surface 26...Contents 27...Perforations 28...Resealing lid 29...Packaging film on top surface 30...Packaging film at front folded portion 31...Adhesive portion 32...Seam 33... Crease 34... Clue 40... Display part 100... Packaging bag

Claims (8)

A hexahedral packaging bag made of packaging film and partly paperboard,
The packaging bag is composed of four sides of the body, a top surface, and a bottom surface,
The four sides of the torso consist of the front of the torso, the back of the torso, and the left and right sides of the torso,
In the bottom surface, a bottom plate made of a packaging film is sealed at the lower part of the body so as to form a rectangular surface by being sealed to the body,
The four sides of the body are made of two wrapping films, and the left and right sides of the body are sealed with the two wrapping films,
In the upper part of the trunk, the packaging film continuous forward from the top surface and the packaging film continuous upward from the front surface of the trunk protrude from the top surface, form a seal part at the tip, and fold forward. make up the department,
The front folded part is folded downward along the folding line of the upper end of the front surface of the body, and is fixed by adhesively detachably covering the upper front half of the front of the body and the upper front halves of both left and right sides of the body. cage,
There is a horizontal opening planned line on the folding line at the upper end of the front of the body,
Two vertical unsealing lines are provided from both front and back surfaces of the front folded part to the top surface, continuing in the direction perpendicular to the horizontal unsealing line,
A paperboard on the top surface has perforations at the position of the opening and is attached to the surface of the packaging film that will be the inside of the container,
The paperboard and perforations on the top surface can be exposed by opening the packaging film along the horizontal and vertical tear lines and subsequent separation of the top packaging film,
Further, the packaging bag is characterized in that an opening is formed in the top surface by opening along perforations of the paperboard. A hexahedral packaging bag made of packaging film and partly paperboard,
The packaging bag is composed of four sides of the body, a top surface, and a bottom surface,
The four sides of the torso consist of the front of the torso, the back of the torso, and the left and right sides of the torso,
In the bottom surface, a bottom plate made of a packaging film is sealed at the lower part of the body so as to form a rectangular surface by being sealed to the body,
The packaging film consists of a film extending from the front surface of the body through the bottom surface to the rear surface of the body, and the both ends of the packaging film are sealed to each other on both left and right sides of the body,
In the upper part of the body, the packaging film continuous forward from the top surface and the packaging film continuous upward from the front surface of the body project from the top surface and form a seal part at the tip,
Configure the front folding part,
The front folded part is folded downward along the folding line of the upper end of the front surface of the body, and is fixed by adhesively detachably covering the upper front half of the front of the body and the upper front halves of both left and right sides of the body. cage,
There is a horizontal opening planned line on the folding line at the upper end of the front of the body,
Two vertical unsealing lines are provided from both front and back surfaces of the front folded part to the top surface, continuing in the direction perpendicular to the horizontal unsealing line,
A paperboard on the top surface has perforations at the position of the opening and is attached to the surface of the packaging film that will be the inside of the container,
The paperboard and perforations on the top surface can be exposed by opening the packaging film along the horizontal and vertical tear lines and subsequent separation of the top packaging film,
Further, the packaging bag is characterized in that an opening is formed in the top surface by opening along perforations of the paperboard. 3. The packaging bag according to claim 1, wherein the perforations are formed in a U-shape on the paperboard of the top surface. The packaging film on the top surface and the paperboard are laminated by providing a heat-sealable layer on the paperboard and pasting them together by heat sealing outside the two vertical opening lines. The packaging bag according to any one of claims 1 to 3. The packaging according to any one of claims 1 to 3, wherein the packaging film on the top surface and the paperboard are laminated on the paperboard with an easy peel film laminated over the entire surface thereof. bag. 6. The packaging bag according to any one of claims 1 to 5 , wherein the horizontal planned opening line and the vertical planned opening line are half-cut lines on the packaging film by a laser beam. The packaging bag according to any one of claims 1 to 6 , wherein the packaging film is laminated with aluminum foil. The packaging bag according to any one of claims 1 to 7 , wherein the packaging film is laminated with a plastic film deposited with an inorganic compound.

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