JPH10230944A - Packaging bag used as cup in common - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive packaging bag used as a cup in common which is excellent in openability and a shape-retaining property in the opened state and which can contain a certain volume of material. SOLUTION: A laminate body composed of a paper layer at the external face and a thermoplastic resin layer at the inside face is folded doubly with the thermoplastic resin layer at the inside to form a rectangular packaging bag used as a cup in common together with the side end seal parts 1 and the bottom seal part 2 having a boat-bottom shape. A folding line 5 is formed adjacently to the inside edge of the side end seal part 1 and the bottom seal part 2 and diagonal folding lines 4 is formed to extend upward from the lower part near a folding line 3 to the nearly central part of the upper end of the packaging bag. And a notched hole 6 is formed in the paper layer of the upper part of the bottom seal part 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a packaging bag that can be used as a cup.

[0002]

2. Description of the Related Art Conventionally, as a packaging bag also serving as a cup, a packaging bag made of a laminate of a paper layer and a thermoplastic resin layer and folded in two and thermally bonded on two sides, or a paperboard layer and an aluminum foil layer It consists of a laminated body with a thermoplastic resin layer, a crease, a notch, etc. are provided in the paperboard layer, the bottom is folded inward and both ends are thermally bonded, and when opened, the bottom is squared An open shape is known. However, the former has a drawback that it is inconvenient to inject water or the like into the interior because the opening property is poor and the shape retention is not good, and the latter has an opening property. Although the shape and the shape retention in the open state are good, there is a drawback that the cost is increased due to the complicated processing and bag making steps.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a low-cost cup / packaging bag which is excellent in openability and shape retention in an open state and can accommodate a fixed capacity.

[0004]

Means for Solving the Problems A laminate having a paper layer on the outer surface and a thermoplastic resin layer on the inner surface is folded at the fold with the thermoplastic resin layer inward and folded in two to seal the side end seal portion and the bottom seal. And two obliquely extending upper portions from a lower portion near the fold to a substantially central portion of an upper end edge of the packaging bag in a symmetrical manner with the fold of the packaging bag. This is a cup / packaging bag having a folded crease.
In this case, by pressing the fold with the finger toward the side end seal portion, the side wall is bent by the diagonal crease, so that it can be easily opened in a cup shape with a single touch, and that state can be maintained. .

In the above-mentioned cup / packaging bag, a fold is formed adjacent to the inner edges of the side end seal portion and the bottom seal portion, so that the fold is directed toward the side end seal portion. The mouth can be easily opened by pushing with a finger, and the folded side wall bends in a state where it bulges outward, so that shape retention is improved. The shape can be easily maintained.

[0006] In the above-mentioned cup / packaging bag, an upper end seal portion having a predetermined width is formed in parallel with the upper end edge, and an opening line is formed adjacent to an inner edge of the upper end seal portion. Since the packaging bag can be sealed at the upper end sealing portion, the packaged contents can be stored for a long time. At the time of use, a cup-shaped container can be obtained by cutting the upper end seal portion along an opening line and then opening it.

[0007] In the above-mentioned cup / packaging bag, a water-soluble drug is filled in the inside and sealed with the upper end seal portion so that the water-soluble drug is packaged. It is very convenient because it can be used as a packaging bag for cold medicine, gastrointestinal medicine, gargle, etc., which is used after pouring water into the inside after opening.

[0008] In the above-described packaging bag also serving as a cup, the fold, the fold, the oblique fold, and the opening line are formed by perforations provided in the paper layer, so that a rigid paper layer is formed. Since it is easy to bend with folds and diagonal folds, it is easy to open the fold by pushing the fold with the finger toward the side end seal part, and it is easy to cut and open the upper end seal part along the opening line. it can.

In the above-mentioned cup / packaging bag, the bottom seal portion is formed in a ship bottom shape, and a cutout hole is formed in the paper layer near the bottom seal portion.
Since the lower part of the packaging bag bulges outward in the opened state, the shape retention in the opened state can be improved and the inner capacity can be increased.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of a cup-cum-packaging bag according to the present invention. (A) is a plan view, (B) is a perspective view showing a state in which a mouth is opened, and FIG. 2 is a blank of the cup-cum packaging bag of the first embodiment. FIG. 3 is a plan view showing a second embodiment of the cup / packaging bag of the present invention, and FIG. 4 is a plan view showing a blank plate of the cup / packaging bag of the second embodiment. Is the side seal, 2 is the bottom seal, 3 is the fold,
4 is a diagonal crease, 5 is a crease, 6 is a cutout hole, 7 is a rib, 8 is a top seal portion, 9 is an opening line, 11 is a side end seal region, 12 is a bottom seal region, and 13 is a top seal region. Respectively.

FIG. 1 shows a first embodiment of a cup / packaging bag according to the present invention. As shown in FIG. 1A, the outer surface is made of a paper layer and the inner surface is made of a thermoplastic resin layer. A rectangular laminate formed by folding a square laminate made of two pieces at folds 3 so that the thermoplastic resin layer comes to the inner surface, and bonding them together at the side end seal portion 1 and the bottom seal portion 2 A packaging bag, comprising a side end seal portion 1 and a bottom seal portion 2
A crease 5 is formed adjacent to the inner edge of the crease, and an oblique crease 4 extending obliquely upward from below the side end of the fold 3 is formed.
The upper portion of the bottom seal portion 2 has a cutout hole 6 formed in a paper layer constituting the laminate, and the upper portion has a rib 7 provided by embossing parallel to the upper end edge. The folds 3, the oblique folds 4, and the folds 5 can be formed by pressing the sheets formed in the laminate, but by forming perforations formed only in the paper layer constituting the laminate, This is preferable because the side wall can be easily bent.

Two oblique creases 4 are symmetrically formed on a rigid laminate having an outer surface made of a paper layer and an inner surface made of a thermoplastic resin layer so as to be widened upward with the fold 3 therebetween. By pressing the fold 3 toward the side end seal portion 1 with a finger, two oblique folds 4 are formed as shown in FIG.
Is easily bent to form a substantially isosceles triangular surface with the fold line 3 as a center line, and a layer made of a thermoplastic resin layer laminated on the cutout hole 6 provided in the paper layer. Since it bulges outward, the packaging bag can be easily opened, the shape can be maintained in the opened state, and the internal capacity can be increased. In addition, since the ribs 7 formed by embossing are formed so as to linearly increase the strength in the direction in which the fold 3 is pressed by a finger, the laminate is bent when the fold 3 is pressed toward the side end seal portion 1. The opening becomes easier without the need.

As shown in FIG. 2, the blank plate for manufacturing the cup / packaging bag of the first embodiment has a square planar shape, a paper layer on the outer surface and a thermoplastic resin layer on the inner surface. A fold 3 is provided at the center, and two diagonal creases 4 are provided symmetrically on both sides of the fold 3 so as to extend diagonally upward from near the lower part of the fold 3, and on both ends. A side end seal region 11 having a predetermined width is provided, and a bottom seal region 12 of a ship bottom type is provided along the lower end edges on both sides of the fold 3, and along the inner edges of the side end seal region 11 and the bottom seal region 12. In this case, a crease 5 is provided, a notch hole 6 formed in a paper layer is provided in the upper part of the bottom seal area 12, and a rib 7 formed by embossing and parallel to the upper edge is provided in the upper part. It is. This blank plate is folded in two at the fold 3 so that the thermoplastic resin layer of the laminate is on the inside, and is thermally bonded at the side end sealing region 11 and the bottom sealing region 12 to be bonded to the side end sealing portion 1 and the bottom. By forming the seal portion 2, the cup / packaging bag of the first embodiment is obtained.

As shown in FIG. 3, the second embodiment of the cup / packaging bag according to the present invention has the same overall configuration as that shown in FIG. 1, but has an upper end seal along the upper edge of the packaging bag. Part 8 is provided and an opening line 9 is formed along the inner edge of the upper end seal part 8.
Is formed. The opening line 9 is formed by perforations provided in the paper layer constituting the laminate. In the case of the present embodiment, after the inside is filled with a drug to be used by dissolving in cold water or the like, it can be sealed with the upper end seal portion 8 to form a sealed package. The contents can be stored for a long time. At the time of use, the upper end seal portion 8 is cut off at the opening line 9 and then opened, and then the fold 3 is pressed with a finger to open the packaging bag as shown in FIG. The contents can be dissolved by injecting water into the inside. By forming a packaging bag using a laminate having a gas barrier layer and having an excellent gas barrier property, a cup-use packaging bag having an excellent preservability and capable of preserving the contents for a long period of time is obtained. It can be used as a packaging bag for cold medicine, gastrointestinal medicine, gargle and the like, which is convenient and easy to carry.

As shown in FIG. 4, the blank plate for manufacturing the cup / packaging bag according to the second embodiment has a square planar shape, and has folds 3 at the center thereof. Are symmetrically provided with two diagonal creases 4 extending obliquely upward from the vicinity of the lower part of the fold 3, side end seal areas 11 of a predetermined width are provided on both side ends, and lower ends on both sides of the fold 3 A bottom seal area 12 of a ship bottom type is provided along each edge, a crease 5 is provided along an inner edge of the side end seal area 11 and the bottom seal area 12, and an upper part of the bottom seal area 12 is provided with:
Notch holes 6 are formed in the paper layer constituting the laminate, and the upper end seal region 13 having a predetermined width is provided along the upper end edge.
And an opening line 9 is formed adjacent to the inner edge of the upper end seal region 13 and formed of a perforation provided in the paper layer forming the laminate, and an upper end edge formed by embossing is formed on the upper portion. This is a shape provided with ribs 7 parallel to. This blank plate is folded in two at the fold 3 so that the thermoplastic resin layer of the laminate is on the inside, and the side end sealing region 1
1. By thermally bonding at the bottom seal region 12 and the top seal region 13 to form the side end seal portion 1, the bottom seal portion 2 and the top seal portion 9, the cup / packaging bag shown in FIG. 3 is obtained. .

In the cup / packaging bag of the present invention, the folds 3, the oblique folds 4, the folds 5, and the opening lines 9 are preferably formed by perforations provided in the paper layer constituting the laminate. Since the packaging bag is used as a cup, it is necessary to give the packaging bag an appropriate rigidity. Therefore, thin paperboard is used as the paper layer. In order to make it easy to bend or cut out the paper layer made of paperboard at a predetermined position, the crease 3, the diagonal crease 4, the crease 5, the opening line 9
Are formed by perforations provided in the paper layer. As the perforated shape, it is preferable that the ratio of the cut portion to the non-cut portion is 2: 1 to 8: 1 and the length of the non-cut portion is about 1 mm. At the time of lamination processing for producing a laminated body constituting the cup / packaging bag, or at the time of bag making processing for forming a packaging bag, a paper layer or lamination is performed from the fold 3, the oblique crease 4, the crease 5, and the opening line 9 at the place. To the extent that the body does not cut,
It is preferable to increase the ratio of the cut portions as much as possible so that the paper layer is easily bent or cut.

The cup / packaging bag of the second embodiment shown in FIG. 1A is cut off along the opening line 9 in the cup / packaging bag of the second embodiment shown in FIG. In this state, by pressing the upper part of the fold 3 toward the side end seal portion 1 with a finger, the side wall of the packaging bag is bent along the oblique ruled line 4 as shown in FIG. Since it can be easily opened so as to have a square shape, it can be used as a cup. The purpose of the rib 7 formed by embossing in the upper part of the packaging bag in parallel to the upper edge is to prevent the side wall from bending when the finger of the fold 3 is pushed toward the side end seal portion 1. After the packaging bag is opened in a cup shape, it is also useful as a standard of water level when water or the like is poured into the inside.

The laminate to be used has a structure in which the outer surface is a paper layer and the inner surface is a thermoplastic resin layer. As the paper layer, it is preferable to use rigid thin paperboard of about 200 g / m ² . For the inner surface, a thermoplastic resin such as polyethylene, ethylene-vinyl acetate copolymer, and polypropylene is used. As a structure of the laminate, a gas barrier layer may be laminated as an intermediate layer between the paper layer and the thermoplastic resin layer. As the gas barrier layer, an aluminum foil, a stretched plastic film, a polyvinylidene chloride-coated stretched plastic film, or a laminate thereof can be used. By making the stretched plastic film used as the gas barrier layer a transverse uniaxially stretched film, the tearability at the opening line 9 can be further improved. A packaging bag made of a laminate having a gas barrier layer is suitable for applications that require filling with contents such as a drug, sealing, and long-term storage. Specific examples of the structure of the laminate include paperboard / polyethylene, paperboard /
Polypropylene, paperboard / polyethylene / aluminum foil / polyethylene, paperboard / polyethylene / biaxially stretched polyethylene terephthalate film / polyethylene, paperboard / polyethylene / horizontal uniaxially stretched polyethylene film / polyethylene, etc. can be used.

[0019] The method for producing a cup-cum-packaging bag of the present invention comprises:
After printing a picture on one side of the paperboard using a paperboard in the form of a roll, folds 4 and 5 and perforations 6 made of perforations are formed at predetermined positions corresponding to the picture. Next, on the other side of the paperboard where the printing is not performed, a thermoplastic resin layer such as polyethylene is extrusion-laminated to produce a laminate, or the other side of the paperboard is aluminum foil by extrusion lamination of polyethylene, stretched. A laminate is prepared by laminating a gas barrier layer such as a plastic film and further laminating a thermoplastic resin layer such as polyethylene on the gas barrier layer surface by extrusion lamination or the like. By slitting the above-prepared laminate at a predetermined position, that is, by slitting at both ends of the blank plate shown in FIGS. 2 and 4, the blank plate shown in FIGS. A roll made of a continuum continuous in the direction is produced.

In the case of the cup / packaging bag according to the first embodiment, the roll obtained by forming the blank plate shown in FIG. It is folded in the longitudinal direction so as to be an inner surface, and is sealed at the side end seal region 11 and the bottom seal region 12 to form the side end seal portion 1 and the bottom seal portion 2. It is produced by cutting. Further, in the case of the cup / packaging bag according to the second embodiment, the roll obtained by vertically connecting the blank plate obtained in FIG. Is folded in the vertical direction so that the inner surface is
After sealing at 11 to form the side end seal portion 1 and making it cylindrical, sealing at the bottom seal region 12 to form the bottom seal portion 2 and then filling the contents and sealing the top seal region 13 Then, the upper end seal portion 9 is formed and cut along the upper end edge of the upper end seal portion 9. In the state of a roll in which the blank plate shown in FIG. 4 is continuous in the vertical direction, the bottom seal region 12 and the top seal region 13 are adjacent to each other. 13 is sealed at the same time, and cut along the boundary line between the bottom seal region 12 and the top seal region 13 to produce a cup / packaging bag.

[0021]

According to the present invention, a laminate having an outer surface made of a paper layer and an inner surface made of a thermoplastic resin layer is folded at a fold with the thermoplastic resin layer inside, and is formed by a side end seal portion and a bottom seal portion. A rectangular packaging bag having two oblique creases extending upward from a lower portion near the fold to a substantially central portion of an upper edge of the packaging bag in a symmetrical manner at the fold of the packaging bag. Since it is a cup and packaging bag, pressing the fold with the finger toward the side end seal part causes the side wall to be bent by the diagonal crease, so it can be easily opened in a cup shape with one touch, and the shape is maintained can do. In the above-mentioned cup / packaging bag, by forming a crease adjacent to the inner edge of the side end seal portion and the bottom seal portion, by pushing the fold with a finger toward the side end seal portion, The mouth can be easily opened, and the creases can be bent in a state where the side wall bulges outward due to the creases, so that the shape retention can be improved, and the cup shape can be maintained so as to maintain a constant capacity in the opened state. In the above-described cup / packaging bag, the upper end seal portion having a predetermined width is formed in parallel with the upper end edge, and the opening line is formed adjacent to the inner edge of the upper end seal portion. Since the packaging bag can be sealed, the packaged contents can be stored for a long period of time. At the time of use, a cup-shaped container can be obtained by cutting and opening the upper end seal portion. In the above-mentioned cup / packaging bag, by filling the inside with a water-soluble drug, sealing with the upper end seal portion and packing the water-soluble drug, the upper end seal portion is cut off into a cup shape at the time of use. It is extremely convenient to use it as a packaging bag for cold medicine, gastrointestinal medicine, gargle, etc., which is used by injecting water or the like after opening. In the above-mentioned cup / packaging bag, the folds, creases, diagonal creases, and opening lines are formed by perforations provided in the paper layer, so that even when the paper layer is made of rigid paperboard, the crease is formed. And since the side wall is easily bent by the diagonal crease, the fold can be easily opened by pushing a finger toward the side end seal part, and the upper end seal part can be easily cut and opened along the opening line. it can. In the above-mentioned cup / packaging bag, the bottom seal portion is formed in a ship bottom shape, and a cutout hole is formed in the paper layer near the bottom seal portion, so that the lower portion of the packaging bag bulges outward in an open state. Therefore, the shape in the opened state can be maintained and the internal capacity can be increased.

[Brief description of the drawings]

1A and 1B show a first embodiment of a cup / packaging bag according to the present invention, wherein FIG. 1A is a plan view and FIG.

FIG. 2 is a plan view showing a blank plate of the cup / packaging bag according to the first embodiment.

FIG. 3 is a plan view showing a second embodiment of a cup / packaging bag according to the present invention.

FIG. 4 is a plan view showing a blank plate of a cup / packaging bag according to a second embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Side end seal part 7 Rib 2 Bottom seal part 8 Top seal part 3 Fold 9 Opening line 4 Diagonal crease 11 Side end seal area 5 Crease 12 Bottom seal area 6 Notch hole 13 Top seal area 7 Rib

Claims (7)

[Claims] 1. A laminate comprising a paper layer on the outer surface and a thermoplastic resin layer on the inner surface is folded at a fold with the thermoplastic resin layer inside, and is formed by a side seal portion and a bottom seal portion. And two oblique folds extending upward from a lower portion near the fold toward a substantially central portion of an upper edge of the packaging bag in a symmetrical manner at the fold of the packaging bag. A packaging bag also serving as a cup, comprising: 2. The packaging bag as claimed in claim 1, wherein a fold is formed adjacent to an inner edge of the side end seal portion and the bottom seal portion. 3. An upper end seal portion having a predetermined width is formed in parallel with the upper end edge, and an opening line is formed adjacent to an inner edge of the upper end seal portion. 2. The packaging bag as described in 2 above. 4. The package for a cup according to claim 3, wherein the inside is filled with a water-soluble drug and sealed at the upper end seal portion, so that the water-soluble drug is packaged. bag 5. The apparatus according to claim 1, wherein the fold, the fold, the oblique fold, and the opening line are formed by perforations provided in the paper layer. Cup and packaging bag. 6. The packaging bag as claimed in claim 1, wherein said bottom seal portion is formed in a ship bottom shape. 7. The packaging bag for cups according to claim 1, wherein a cutout hole is formed in said paper layer near said bottom seal portion.