JP6651090B1 - Gazette pillow type packaging bag - Google Patents

Abstract

The present invention provides a gusset pillow-type packaging bag that can be easily opened even when a rigid material such as a PTP package is enclosed, and that can easily store the enclosed material after opening. A gusset pillow type packaging bag (1) includes an aluminum foil layer (8a), a heat-adhesive resin layer (8b) provided on the inner surface of the aluminum foil layer (8a), and a resin film layer (8c) provided on the outer surface of the aluminum foil layer (8a). It is composed of at least the laminated film 8 provided, and is formed by the jointed thermal bonding portion 6 on the back surface 2 side and the edge thermal bonding portions 7a and 7b at the upper and lower ends, and cuts into the resin film layer 8c to cut the tear line 5. The tear line 5 includes a back tear line 5a formed on the back part 2 side of the bag 1 and end face tear lines 5b formed on the left and right end face parts 3a, 3b of the bag 1, and the back tear line is provided. 5a extends linearly at an elevation angle from near the base end of the joint palm thermal bonding portion 6, and the end face tear line 5b extends linearly from near the end of the back tear line 5a at an elevation angle greater than the back tear line 5a. The features. [Selection diagram] FIG.

Description

  The present invention relates to a gusset pillow-type packaging bag for enclosing foodstuffs, pharmaceuticals, and the like.

  BACKGROUND ART A vertically long pillow-type packaging bag in which the rear side is formed into a tubular shape with a jointed palm, and whose upper and lower ends are bonded, is used for packaging foodstuffs, pharmaceuticals, and the like. In the case of packaging a thick product, a gusset pillow type packaging bag provided with a gusset on the side end surface may be used. Such pillow-type packaging bags are often seen to be cut open laterally from the joint on the back side and opened.

  For example, Patent Literature 1 below discloses a pillow-type bag formed of a multi-layer laminated film having a thermo-adhesive resin layer on the inner surface and formed by a thermo-adhesive portion at both ends and thermo-adhesive portions at both ends of the thermo-adhesive portion. A notch is formed at the side end of the jointed thermal bonding portion near the one edge thermal bonding portion, and a score line extending obliquely in the direction of the one edge thermal bonding portion from this notch is laminated. A packaging bag characterized by having a structure formed in at least one layer constituting a film is disclosed.

  Patent Document 2 below discloses a pillow-type bag which is formed of a laminate having a base material layer and a heat-adhesive resin layer and is formed by a joint thermal bonding portion and an edge thermal bonding portion. A packaging bag, wherein an opening start portion is provided, and a score line extending obliquely from the opening start portion toward both side ends of the bag is formed so as to penetrate at least the base material layer of the laminate. Is disclosed.

  Japanese Patent Application Laid-Open No. H11-163,098 discloses a back sealing portion formed by thermally bonding both side edges of a packaging material having a heat sealing resin layer as an innermost layer in a palm-shape manner, and forming a bottom sealing portion and a top sealing portion. A packaging bag having a cylindrical structure formed by forming a notch, which is provided at a predetermined portion of the back pasting seal portion and serves as a trigger for opening, and a center line of the packaging material facing the back pasting seal portion. On the other hand, it has two opening guide lines that are arranged substantially symmetrically and induces tearing of the packaging material, and the opening guide line has a starting point below the opening notch and passes near the opening notch. A packaging bag is disclosed, which ascends and reaches an end point located closer to the center line than the start point.

JP 2001-31114 A JP-A-2002-193276 JP 2014-987 A

In such a pillow-type packaging bag, for example, PTP packages may be bundled and sealed as a set of ten sheets. Since the PTP package is formed from a rigid plastic sheet or the like, there are cases where the PTP package is caught by the PTP package when opening the packaging bag and is difficult to open.
Further, when the PTP package is used for a medicine containing tablets and the like, a plurality of PTP packages are not used all at once, but are used sequentially, so that some PTP packages remain after opening. It is convenient if the storage bag can be stored so that the PTP package remaining after opening is not scattered.

  Further, in order to prevent deterioration of the quality of the enclosure, a packaging bag may be made of a laminated sheet on which aluminum foil or the like is laminated to prevent permeation of oxygen or water vapor. Aluminum foil is a material that can easily form pinholes when bent or bent, so if a cut is made in a laminated resin film or the like so that it can be easily opened, a pinhole may be formed in the aluminum foil near the cut during molding. was there.

  Therefore, an object of the present invention is to provide a gusset pillow-type packaging bag that can be easily opened even if a rigid thing such as a PTP package is enclosed, and that can easily store the enclosed substance after opening. This packaging bag also provides that pinholes are less likely to form in the aluminum foil during molding.

  A gusset pillow-type packaging bag according to one embodiment of the present invention is a laminated bag including at least an aluminum foil layer, a heat-adhesive resin layer provided on an inner surface of the aluminum foil layer, and a resin film layer provided on an outer surface of the aluminum foil layer. A gusset pillow-type packaging bag formed of a film and formed by a back side thermal bonding portion on the back side and an edge thermal bonding portion on the upper and lower ends, in which a cut line is provided by making a cut in the resin film layer. The tear line is composed of a back tear line formed on the back side of the bag and an end face tear line formed on the left and right end face sides of the bag. It extends linearly at an elevation angle, and the end face tear line extends straight from the vicinity of the end of the back tear line at an elevation angle larger than the back tear line.

By providing the back surface tear line and the end surface tear line in this way, it is possible to tear off from the back side thermal bonding portion on the palm side and open along the back surface tear line and the end surface tear line. Due to the large elevation angle, it is difficult for the items to be caught by the container, and the opening can be performed smoothly.
Also, since there is no tear line on the front side of the bag, the upper end side can be left, and after opening, this part can be used as a lid. Can be stored.

  In the packaging bag according to the above aspect, it is preferable that the end of the end surface tear line is provided near the base end of the edge thermal bonding portion at the upper end. In this manner, the vicinity of the base end of the edge heat-bonded portion functions as a hinge, and the cut upper end portion is easily opened.

In one form of the packaging bag, it is preferable that the tear line is formed from three parallel cuts. By making the tear line into three parallel cuts in this way, it is possible to open along the tear line without deviating from the tear line when cutting.
In this case, it is more preferable that only the vicinity of the corner between the rear surface and the left and right end surfaces be a cut line formed by a single cut. Since the corners are bent at the time of molding and are processed, pinholes are easily formed in the aluminum foil. However, if a single cut is made, pinholes are less likely to be formed at the time of molding.

  In the packaging bag of the above aspect, it is preferable that a cut is made horizontally in the resin film layer in the portion of the heat-sealed portion of the palm and connected to the rear tear line. By doing so, it is easy to cut off from the heat-sealed portion of the joint, and the opening operation becomes easy.

  It is preferable that the above-mentioned one form of packaging bag encloses a plurality of PTP packages, and is suitable for enclosing such a rigid object.

The present invention is, for example, a method for manufacturing a gusset pillow-type packaging bag of the above-described one form, and after providing a cut line by cutting a laser on the outer surface of a long laminated film, appropriately forming the laminated film. A method of manufacturing a gusset pillow-type packaging bag formed by cutting into a size and thermally bonding a back side thermal bonding portion and upper and lower edge thermal bonding portions to each other is also provided.

1 shows a gusset pillow-type packaging bag according to an embodiment of the present invention, wherein (A) is a rear perspective view and (B) is a front side. It is sectional drawing which showed typically an example of the laminated film for manufacturing the packaging bag of FIG. FIG. 2 is a partially enlarged perspective view showing the vicinity of a corner through which a tear line of the packaging bag of FIG. 1 passes. It is the figure which showed an example of the manufacturing method of the packaging bag of FIG. 1, and provided the tear line by laser processing. It is the perspective view which showed the state which opened the packaging bag of FIG. It is the perspective view which showed the state which stores the storage thing using the packaging bag of FIG.

  Hereinafter, a gusset pillow type packaging bag according to an embodiment of the present invention will be described. However, the present invention is not limited to this embodiment.

  As shown in FIG. 1, the gusset pillow type packaging bag 1 according to one embodiment of the present invention includes a back surface 2, left and right side end surfaces 3 a and 3 b, a front surface 4, and a tear line 5.

  The packaging bag 1 is provided with a joint palm thermal bonding portion 6 along the height direction near the center line of the back surface portion 2. The left and right side end surfaces 3a and 3b are provided with folds 3c that are folded inward near the center line. In the state where the fold 3c is folded inward, the upper and lower ends are thermally bonded to provide thermal bonding portions 7a and 7b at the upper and lower ends, so that a so-called gusset pillow type is provided.

  The size of the packaging bag 1 is not particularly limited, but the height is preferably in the range of 100 mm to 200 mm, particularly preferably in the range of 130 mm to 170 mm, and the width is preferably in the range of 30 mm to 80 mm, particularly 40 mm. The thickness is preferably in the range of ６０60 mm, and the thickness is preferably in the range of 15 mm to 40 mm, particularly preferably in the range of 20 mm to 30 mm.

  The packaging bag 1 is formed from a laminated film 8. The laminated film 8 includes, for example, as shown in FIG. 2, an aluminum foil layer 8a and a heat-adhesive resin layer 8b provided on the inner surface of the aluminum foil layer 8a. And a resin film layer 8c provided on the outer surface of the aluminum foil layer 8a.

The aluminum foil layer 8a is provided to prevent permeation of oxygen and water vapor.
As the aluminum foil layer 8a, for example, a conventional hard or soft aluminum foil can be used. Aluminum foil has a glossy surface (mirror surface) on one surface, a matte surface (matte surface) on the other surface, a glossy surface (mirror surface) on both surfaces, and a matte surface on both surfaces. Any of the matte surfaces may be used.

  The thickness of the aluminum foil layer 8a is not particularly limited, but is preferably in the range of 5 μm to 30 μm, particularly preferably in the range of 7 μm to 12 μm.

The thermo-adhesive resin layer 8b is provided to form a bag shape by thermo-adhesion to form the joint thermo-adhesive portion 6 and the upper and lower edge thermo-adhesive portions 7a and 7b.
The heat-adhesive resin layer 8b is formed from a film made of a resin that can be heat-bonded, and is, for example, a polyethylene resin film, a polypropylene resin film, an ethylene-vinyl acetate copolymer resin film, an ionomer resin film, an ethylene-acrylic resin. It can be formed from an acid copolymer resin film, an ethylene-propylene copolymer resin film, or the like.

  The thickness of the heat-adhesive resin layer 8b is not particularly limited, but is preferably in the range of 15 μm to 80 μm, particularly preferably in the range of 30 μm to 40 μm.

The resin film layer 8c is provided to protect the aluminum foil layer 8a.
The resin film layer 8c can be formed from, for example, a polyethylene terephthalate resin film, a polyethylene resin film, or the like.

  The thickness of the resin film layer 8c is not particularly limited, but is preferably in the range of 12 μm to 40 μm, particularly preferably in the range of 20 μm to 30 μm.

  The laminated film 8 can be formed by laminating an aluminum foil layer 8a, a thermally adhesive resin layer 8b, and a resin film layer 8c by, for example, extrusion lamination, dry lamination, wet lamination, thermal lamination, sand lamination, or the like.

  The total thickness of the laminated film 8 is not particularly limited, but is preferably in the range of 20 μm to 120 μm, particularly preferably in the range of 50 μm to 90 μm.

As shown in FIG. 1, the tear line 5 is formed by cutting only the resin film layer 8c on the back surface 2 and the left and right side end surfaces 3a and 3b. This cut is preferably provided by laser processing. The tear line 5 formed on the back part 2 is referred to as a back tear line 5a, and the tear line 5 formed on the left and right side end faces 3a, 3b is referred to as an end face tear line 5b.
The back tear line 5a extends straight from the vicinity of the base end of the joint palm thermal bonding portion 6 toward the side end surfaces 3a, 3b at the back portion 2 at an elevation angle. This angle is not particularly limited, but is preferably in the range of 5 ° to 30 °, particularly preferably in the range of 15 ° to 25 ° with respect to the horizontal direction.
It is preferable that the rear tear line 5a is provided with a starting end provided near the base end of the jointed thermal bonding portion 6 at a position of 3: 7 to 5: 5, particularly about 4: 6 from the upper side with respect to the entire height of the bag 1. It is preferable from the viewpoint of easy opening.
In the present embodiment, the rear-side thermal bonding portion 6 is provided near the center line of the back surface portion 2, so that the rear tear line 5 a is symmetrical in the left-right direction. It may be provided at a position deviated from the center line of the portion 2, and in that case, it is preferable that the left and right ends of the back tear line 5a have substantially the same height.

The end face tearing line 5b extends straight from the vicinity of the end of the back face tearing line 5a toward the front part 4 at an elevation angle larger than the elevation angle of the back face tearing line 5a at the left and right side end face parts 3a, 3b. This angle is not particularly limited, but is preferably in the range of 40 ° to 80 °, particularly preferably in the range of 50 ° to 70 ° with respect to the horizontal direction.
The end of the end face tear line 5b is preferably provided near the base end of the edge thermal bonding portion 7a on the upper end side. By doing so, the vicinity of the base end of the edge thermal bonding portion acts like a hinge, and it becomes easy to open the cut upper end side.

  It is preferable that the split line 5 is also provided in the joint thermal bonding portion 6 so as to be continuous with the rear surface cut line 5a. In this case, the tear line 5 is preferably horizontal. This makes it easier to open from this location.

The tear line 5 can be provided by making a single cut, but may be formed by making a plurality of cuts in parallel. As shown in FIG. 3, three parallel cuts are made. Is preferred. By doing so, it becomes easier to tear along the tear line 5 when opening, and a desired position can be torn. The interval between cuts is not particularly limited, but is preferably 1 μm to 3 μm, particularly preferably 1.5 μm to 2 μm.
When a plurality of cut lines 5 are formed, it is preferable that the cut lines 5 near the corners 2a and 2b of the back surface 2 and the left and right side end surfaces 3a and 3b are formed as one cut. By providing the tear line 5, since the aluminum foil layer 8a is exposed, a pinhole may be formed near the corners 2a and 2b. By making a single cut, it is possible to make it difficult to form a pinhole.

The packaging bag 1 can be manufactured, for example, as follows.
Using the rolled long laminated film 8, a cut is made in the resin film layer 8 c by laser processing or the like to form a tear line 5. At this time, as shown in FIG. 4, it is preferable to form three parallel cuts, and make a single cut only at the corners of the back surface 2 and the left and right side end surfaces 3a and 3b. . Since the laser is reflected by the aluminum foil layer 8a, a cut can be provided only in the resin film layer 8c.
Thereafter, the long laminated film 8 is cut into appropriate sizes along the cutting line 9, the left and right ends are joined together in a palm shape, and heat-bonded to form a palm joint heat-bonded portion 6, which is formed into a vertically long rectangular tube shape. I do. Then, the folds 3c of the left and right end surfaces 3a, 3b are folded inward, and the lower ends are thermally bonded to form the edge thermal bonding portions 7a, 7b on the lower end side. The gusset pillow-type packaging bag 1 can be manufactured by housing the contents and thermally bonding the edge thermal bonding portion 7a on the upper end side.
Note that the dashed line in FIG. 4 is a bent portion.

  The packaging bag 1 can enclose, for example, a medicine or a food product, and preferably encloses a PTP package 10 containing a medicine such as a tablet or a capsule, and bundles and encloses a plurality of PTP packages 10. It is particularly preferred that

By providing the tear line 5, the packaging bag 1 can be opened along the rear tear line 5 a and the end tear line 5 b from the rear part 2 side, as shown in FIG. 5. At this time, since the end face tear line 5b is set to a large elevation angle, it becomes difficult to be caught by a rigid object such as the PTP package 10, particularly the PTP package 10, and the opening can be performed smoothly.
Further, since no tear line is provided on the front portion 4 side, the upper end portion of the bag 1 remains connected to the bag 1 and can be used as a lid after opening, so that as shown in FIG. If there are any remaining items, they can be stored again and stored.

  Further, in the packaging bag 1, the end of the end face tear line 5b is provided near the base end of the edge thermal bonding portion 7a on the upper end side, so that the proximal portion of the edge thermal bonding portion 7a functions like a hinge. To make it easier to open the cut upper end.

DESCRIPTION OF SYMBOLS 1 ... Gazette pillow type packaging bag 2 ... Back part 2a ... Corner part 3a, 3b ... Side end surface part 3c ... Folding 4 ... Front part 5 ... Cut line 5a ... Back cut line 5b ... End surface cut line 6 ... Heat bonding part 7a, 7b: Edge thermal bonding portion 8: Laminated film 8a: Aluminum foil layer 8b: Thermal adhesive resin layer 8c: Resin film layer 9: Cutting line 10: PTP package

Claims (8)

A laminated film comprising at least an aluminum foil layer, a heat-adhesive resin layer provided on the inner surface of the aluminum foil layer, and a resin film layer provided on the outer surface of the aluminum foil layer, A gusset pillow-type packaging bag formed by a part and an edge thermal bonding part of upper and lower ends,
A cut line is provided by making a cut in the resin film layer,
The tear line comprises a back tear line formed on the back side of the bag, and an end face tear line formed on the left and right end face sides of the bag.
The back tear line extends linearly at an elevation angle from near the base end of the jointed thermal bond,
The end face tear line extends linearly from near the end of the back tear line at an elevation angle greater than the back tear line.
Packaging bag.   The packaging bag according to claim 1, wherein an end of the end face tear line is provided near a base end of an edge thermal bonding portion at an upper end.   The packaging bag according to claim 1 or 2, wherein the tear line is formed from three parallel cuts.   The packaging bag according to claim 3, wherein only the vicinity of the corner between the back surface portion and the left and right end surface portions of the packaging bag is a tear line formed by a single cut.   The packaging bag according to any one of claims 1 to 4, wherein a cut is made horizontally in the resin film layer at the joint portion of the heat-sealed portion, and the cut is connected to the rear tear line.   The packaging bag according to any one of claims 1 to 5, wherein a plurality of PTP packages are enclosed. It is a manufacturing method of the gusset pillow type packaging bag according to any one of claims 1 to 6,
On the outer surface of the long laminated film, a cut is made by laser processing to provide the tear line, and then the laminated film is cut into an appropriate size. A method for manufacturing a gusset pillow-type packaging bag formed by heat bonding an edge heat bonding portion. The tear line is cut into three parallel cuts on a surface that becomes the back portion and the left and right end portions of the packaging bag, and a portion that becomes a corner between the back portion of the packaging bag and the left and right end portions. The method for producing a gusset pillow-type packaging bag according to claim 7, wherein a single cut is provided only in the gusset pillow-type packaging bag.

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