JPH07223653A - Bag for packing - Google Patents

Abstract

PURPOSE:To make unsealing easy while improving tightness in sealing for a bag made of a laminated body by a method wherein a dashed line for tearing-up provided to a position above a zipper is made in a specified structure. CONSTITUTION:In a packaging body 1, seals 2 are provided to its periphery, a zipper 3 is provided transversely on the upper part of the bag and a dashed line 4 for tearing-up is provided to a position above the zipper 3. The bag 1 is constructed of a laminated body, a compound aluminum made at least of two layers, and the aluminum is desirable to be included in the inside layer in order to provide excellent airtightness to the bag 1. The dashed line 4 for tearing-up is formed at least to one layer on the outside of the layer constituting the laminated body, and is not formed to the inside layer formed at least of one layer. Thereby, a part above the zipper 3 can be cut easily while keeping airtightness for the bag, and contents in the package can be preserved stably.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging bag.
More specifically, the present invention relates to a packaging bag comprising a zip and a laminate having a broken line for tearing having a specific structure.

[0002]

2. Description of the Related Art A zip is provided above a bag to open and close a packaging bag, and a perforated broken line is provided above the zip so that the zip can be opened and closed. It is known (Japanese Utility Model Publication No. 4-23796, etc.). By applying this type of processing to the top of the zip, you do not need scissors or other blades to open the bag, and you can open it straight with your fingers, so it looks good after cutting and damages the zip. There are advantages such as not having to do it. However, if the bag is provided with perforations, there is a problem in that the airtightness of the bag cannot be maintained and the storability and stability of the package contents cannot be ensured. In particular, the contents of the package include medicines such as poultices and plasters; cairo; dried foods such as shavings, raw kushi, noodles and seaweeds; foods such as tsukudani and pickles; powders such as wheat and starch; green tea, coffee and black tea. Such as chemical fertilizers, spices and other chemical substances; cosmetics; fragrances, shampoos and other toiletry products, the contents are dry, heat is generated, contains moisture, and smells It is not desirable because it may leak to the outside of the body, volatilize volatile components, or alter the components, resulting in a decrease in commercial value.

[0003]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a packaging bag which is easy to open, has excellent sealing property, and can maintain the storability and stability of package contents. And

[0004]

Means for Solving the Problems The present inventors can achieve the above object by making a broken line for tearing provided above a zip a specific structure in a bag body made of a laminated body. The inventors have found out what can be done and have completed the present invention. That is, the present invention is a package comprising a laminate having a seal around the periphery, a zip is provided in the width direction in the upper portion, and a broken line for tearing is formed above the zip in parallel with the zip. In the bag body for packaging, the broken line for tearing is formed in at least one outer layer constituting the laminate, and is not formed in an inner layer composed of at least one layer. Become.

[0005]

With the packaging bag of the present invention having the above-mentioned structure, the upper part of the zip can be easily cut, and the airtightness of the bag can be maintained.
Therefore, the storability and stability of the package contents can be ensured, and the odor of the package contents can be prevented from leaking to the outside of the bag. Moreover, the broken line for tearing of the packaging bag of the present invention is less noticeable in appearance than a normal perforation, so that the aesthetic appearance of the bag is not impaired.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings. FIG. 1 is a front view of the packaging bag of the present invention. As shown in FIG. 1, the packaging bag 1 of the present invention is
A seal 2 is provided on the periphery, a zip 3 is provided on the upper side in the width direction of the bag body, and a broken line 4 for tearing is formed above the zip 3. The article to be packaged in the bag body of the present invention is not particularly limited, but in particular, medicinal products such as poultices and plasters; Cairo; instant noodles, spaghetti, seaweed, seaweed, flowers, and Dried raw materials such as raw sardines; foods such as Tsukudani and pickles; powders such as dashi stock, wheat flour, potato starch and bran pickles; favorite products such as green tea, coffee and black tea; chemical substances such as chemical fertilizers and pesticides; cosmetics; It can be suitably used for toiletry products such as deodorants, shampoos and conditioners. The packaging bag 1 is composed of a laminated body. The laminate is a composite laminate film having at least two layers, and in order to make the bag body excellent in airtightness, it is preferable to include an aluminum layer in the inner layer. The laminate of the present invention can be produced by any conventional method such as a dry lamination method, a wet lamination method, a hot melt lamination method and an extrusion lamination method used for producing a composite laminate film.

The layers constituting the laminate are, for example, paper,
Non-woven fabric, cellophane, nylon, polyethylene, polyester, polypropylene, polyvinyl chloride, ionomer, polyamide, polyacrylonitrile, olefin,
It comprises at least two layers selected from film layers consisting of polyvinylidene chloride, polyvinyl alcohol, ethylene vinyl acetate copolymer, polycarbonate, polystyrene, ethylene vinyl alcohol copolymer, ethylene acrylic copolymer and aluminum. The layer structure of the laminate of the present invention is not particularly limited, and may be any type of composite laminate film used for a usual packaging bag.

The layer structure of the laminate of the present invention will be described below with reference to examples. For example, when the package contents are pharmaceuticals such as poultices and plasters, the layered structure of the laminate is (1) paper layer / polyethylene layer / aluminum layer / polyethylene layer from the outside to the inside. (2) Cellophane layer / paper layer /
The polyethylene layer / aluminum layer / polyethylene layer, and (3) cellophane layer / polyethylene layer / paper layer / polyethylene layer / aluminum layer / polyethylene layer can be used.

When the package contents are a body warmer, the layer structure of the laminate is, for example, (4) polyethylene layer / polyvinylidene chloride / polypropylene layer, (5) chloride from the outside to the inside. It may have a layer structure such as vinylidene-coated polypropylene layer / polyethylene layer and (6) vinylidene-coated vinylidene layer / polyethylene layer.

When the package contents are shavings, the layer structure of the laminate is, for example, (7) polyvinylidene chloride-coated cellophane layer / polyethylene layer, (8) poly (vinylidene chloride coated cellophane) / polyethylene layer. Vinylidene chloride coated cellophane layer / biaxially oriented polypropylene layer / polyvinylidene chloride layer / polyethylene layer, (9) biaxially oriented polypropylene layer /
Polyvinyl alcohol layer / polyethylene layer, (10) biaxially oriented polypropylene layer / ethylene vinyl acetate copolymer layer / polyethylene layer, (11) polypropylene layer / polyethylene layer, (12) biaxially oriented polypropylene layer / polyvinylidene chloride layer / It may have a layer structure such as a polyethylene layer / polyvinylidene chloride layer / polyethylene layer.

When the package contents are instant noodles, spaghetti, seaweed, seaweed, etc., the layer structure of the laminate is, for example, (13) biaxially oriented polypropylene layer / polyethylene from the outside to the inside. Layer, (14) biaxially stretched polypropylene layer / unstretched polypropylene layer, or the like. When the package contents are foods such as Tsukudani, the layer structure of the laminate is, for example, (15) biaxially oriented polypropylene layer /
Polyethylene layer, (16) nylon layer / polyethylene layer, (17) polyvinylidene chloride coated cellophane layer / polyethylene layer, (18) biaxially oriented polypropylene layer / polyvinylidene chloride layer / polyethylene layer, (19) biaxially oriented polypropylene layer / Polypropylene layer / polyethylene layer, (20) biaxially oriented polypropylene layer / polyvinyl alcohol layer / polyethylene layer, (21) biaxially oriented polypropylene layer / polyethylene layer / polyvinyl alcohol layer / polyethylene layer and the like. .

When the package contents are pickles,
The layer structure of the laminate is from the outside to the inside, for example,
(22) Nylon layer / polyethylene layer, (23) Polyester layer / Polyethylene layer, (24) Polyvinylidene chloride coated cellophane layer / Polyethylene layer, (25) Biaxially oriented polypropylene layer / Polyvinylidene chloride coated cellophane layer / Polyethylene layer, (26) Biaxially stretched polypropylene layer / polyvinylidene chloride layer / polyethylene layer, (2
7) Nylon layer / polyvinylidene chloride layer / polyethylene layer, (28) Polyester layer / polyvinylidene chloride layer /
Polyethylene layer, (29) biaxially oriented polypropylene layer /
It may have a layer structure such as a polypropylene layer / polyethylene layer.

When the package contents are powders such as dashi stock and wheat flour, the layer structure of the laminate is, for example, (30) polypropylene layer / polyethylene layer / aluminum from the outside to the inside. Layer / polyethylene layer, (31)
It may have a layer structure such as a polypropylene layer / polyethylene layer (/ non-stretched polypropylene layer).

When the package contents are green tea,
The layer structure of the laminate is from the outside to the inside, for example,
(32) polyvinylidene chloride-coated cellophane layer / polyethylene layer, (33) biaxially oriented polypropylene layer / polyvinylidene chloride-coated cellophane layer / polyethylene layer, (3)
4) polyethylene layer / polyvinylidene chloride layer / polyethylene layer, (35) biaxially oriented polypropylene layer / polyvinylidene chloride layer / polyethylene layer, (36) biaxially oriented polypropylene layer / polyvinylidene chloride layer / polyethylene layer / unstretched polypropylene Layer, (37) polypropylene layer / aluminum layer / polyethylene layer, (38) biaxially oriented polypropylene layer / aluminum layer / polyethylene layer,

(39) Polypropylene layer / polyethylene layer / paper layer / aluminum layer / polyethylene layer, (40)
Polypropylene layer / polyethylene layer / paper layer / polyethylene layer (41) stretched nylon layer / polyester layer / aluminum vapor deposition film layer / polyethylene layer, (42) paper layer / polyvinylidene chloride layer / biaxially stretched polypropylene layer /
Aluminum vapor deposition film layer / polyethylene layer, (4
3) Paper layer / polyester layer / aluminum deposited film layer / polyethylene layer (44) Moisture-proof cellophane layer / aluminum layer / paper layer / polyethylene layer, (45) moisture-proof cellophane layer / polyethylene layer / unstretched polypropylene layer Can be

When the package contents are favorite items such as coffee and tea, the layer structure of the laminate is, for example, (46) polyester layer / aluminum layer / polyethylene layer from the outside to the inside. (47) Moisture-proof cellophane layer / polyethylene layer / non-axially stretched polypropylene layer.

Further, the contents of the package include cosmetics, chemical substances,
In the case of a toiletry product, the layer structure of the laminate is, for example, (48) polyester layer / non-axially stretched polypropylene layer, (49) polyester layer / aluminum layer / polyethylene layer from the outside to the inside. Can consist of These package contents are stored in the inside 11 of the bag body of the present invention made of a laminated body.

The total thickness of the laminate is preferably about 50 to 300 μm, more preferably about 70 to 150 μm, but not limited to this. Although the thickness of each layer constituting the laminated body is not limited to this, for example, in the configuration of (2) above,
Cellophane layer 10-100 μm, especially 15-50 μm, paper layer 20-200 μm, especially 50-100 μm, polyethylene layer 10-100 μm, especially 10-30 μm, aluminum layer 4-30 μm, especially about 7-10 μm, and polyethylene layer 10 It can be 100 μm, especially 20 to 50 μm.

The tearing broken line is formed in at least one outer layer of the layers constituting the laminate, and at least one
It is not formed on the inner layer of layers. The structure of the outer layer in which the broken line for tearing is formed and the inner layer in which the broken line is not formed is not particularly limited, but if the inner layer includes an aluminum layer, the bag can be kept highly airtight. Therefore, it is preferable. FIG. 2 is a cross-sectional view taken along the line II ′ of FIG. 1, showing the configuration of the laminated body of (1) above.
Referring to FIG. 2, the outer paper layer 7 and the polyethylene layer 8 are provided with a groove portion 5 forming a broken line for tearing. The groove portion 5 is formed by the aluminum layer 9 and the inner polyethylene layer 10. Has not reached. Further, in the configuration of (2) above, broken lines for tearing are formed in the cellophane layer, the paper layer and the polyethylene layer, but the groove portion does not reach the aluminum layer and the polyethylene layer. Further, in the above configuration (3), the broken line for tearing is formed up to the cellophane layer, the polyethylene layer, the paper layer and the polyethylene layer, but the groove portion does not reach the aluminum layer and the polyethylene layer inside thereof.

According to the tearing broken line of the present invention, even if the broken line is applied only to a part of the laminate, if a slight force is applied to the end portion of the broken line, the tearing is performed along the broken line. , Can be cut linearly. Therefore, the chips do not drop, and the appearance of the bag body after cutting by tearing is good. The tear does not damage the zip. In particular, when the package contents are medicines such as a patch preparation, the user is often an elderly person, an injured person such as a bruise, or a person who has muscle pain. It is convenient.

The broken line 4 for tearing may be formed on both surfaces of the packaging bag of the present invention, or may be formed on one surface thereof, and is formed on only one surface. However, it can be easily cut along the broken line for tearing.
The depth of the groove portion that forms the broken line 4 for tearing formed in the laminate is not limited to these, but is preferably 70 to 90 μm, particularly preferably 75 to 85 μm, and the depth of the groove portion is the laminate. 60 to 90%, especially 70 to 80% of the thickness of the above is preferable because the force for tearing is not required so much and the broken line is not conspicuous. The length of one groove portion 5 along the width direction of the bag body is preferably 1 to 6 mm, particularly preferably 2 to 3 mm. Further, the distance 6 between one groove portion and the adjacent groove portion is preferably 1 to 6 mm, particularly preferably 1 to 3 mm. Furthermore, the ratio of the length of the groove portion along the width direction of the bag body and the distance between the adjacent groove portions (the ratio of the length of the groove portion 5 to the length of the interval 6 in FIG. 2) is 1: 1 to 5: 1 is preferable, and particularly 2: 1 to 4: 1 is preferable because tearing is particularly easy and, moreover, tearing does not occur spontaneously during transportation.

The method for forming the broken line for tearing according to the present invention may be any method. For example, producing an outer layer of at least one layer in which a tear line is formed, forming a tear line in those layers, and then laminating it with at least one inner layer in which no tear line is formed. Thus, the laminate of the present invention can be manufactured.
Also, if a laminated body including an aluminum layer is first manufactured, and then the laser beam is irradiated to the outside of the laminated body, the aluminum layer reflects the laser beam, so that a broken line for tearing is formed in a layer below the aluminum layer. However, the broken line is formed only in the layer above the aluminum layer, which is advantageous.

Further, as shown in FIG. 3, if the notch 12 is provided at the end of the tearing broken line 4, the position of the broken line becomes easy to understand even in a dark place or a user with poor eyesight.
It is preferable because it can be torn with a weaker force.
The notch 12 may be provided at one or both ends of the tear line 4, and may be V-shaped, U-shaped, S-shaped or the like.

In the bag of the present invention, the seal 2 provided around the bag is provided by a method such as heat welding to maintain the airtightness. All corners or the top two corners of the seal 2 can be rounded. The rounded shape is preferable because it is possible to prevent the fingertips of the user from being scratched, and the corners do not damage each other during the transportation of the product. Further, in the bag body of the present invention, the zip 3 refers to a re-openable / closable articulating device including an engaging projection and an engaging recess, and may be any type such as a chuck, a slide fastener, and a zipper. Good.

[0025]

As described above, since the packaging bag of the present invention has the specific broken line for tearing formed on the zip, it is excellent in hermeticity as compared with the prior art bag. ,
The storability and stability of the package contents can be kept high. In particular, the packaging contents are pharmaceuticals such as poultices and plasters;
Cairo; instant noodles, spaghetti, seaweed, wakame, hanakatsu, dried bonito, etc .; foods such as tsukudani, pickles; powders of dashi stock, wheat flour, potato starch and bran pickles; green tea, coffee and black tea Such as chemicals such as chemical fertilizers and pesticides; cosmetics; toiletries such as deodorants, shampoos and rinses, etc., dryness, heat generation, moisture, volatilization of ingredients, odors outside the bag This is useful because it can prevent deterioration of components and the like.

Further, the broken line for tearing provided on the bag body of the present invention is less noticeable in appearance than the conventional perforations, so that it does not spoil the appearance of the bag body. Moreover, the packaging bag of the present invention is easy to open even though the broken line for tearing is formed only on a part of the laminate, and a slight force is applied to the end of the broken line for tearing by fingers. After that, it can be cut by linearly tearing along the tearing broken line, the zip is not damaged, and the appearance after cutting is good. In particular, even if the user of the bag body is an elderly person, a surgical patient such as a bruise, or a person with poor eyesight, the bag body can be easily opened, which is advantageous.

[Brief description of drawings]

FIG. 1 is a front view of a packaging bag according to the present invention.

FIG. 2 is a cross-sectional view taken along the line II ′ of the packaging bag of FIG.

FIG. 3 is a front view showing another embodiment of the packaging bag of the present invention.

[Explanation of symbols]

 1 packaging bag 2 seal 3 zip 4 broken line for tearing 5 groove part 6 gap between groove part and groove part 7 paper layer 8 polyethylene layer 9 aluminum layer 10 polyethylene layer 11 bag inside 12 cut part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuya Hara 408 Tashiro Daikancho, Tosu City, Saga Prefecture Hisamitsu Pharmaceutical Co., Ltd.

Claims (9)

[Claims] 1. A packaging comprising a laminated body having a seal in the periphery, a zip is provided in the width direction in an upper portion, and a broken line for tearing is formed in parallel with the zip above the zip. In the bag, the broken line for tearing,
A packaging bag which is formed in at least one outer layer constituting the laminate and is not formed in at least one inner layer. 2. The inner layer in which the tear line is not formed includes an aluminum layer.
The packaging bag described in. 3. The packaging bag according to claim 1, wherein the inner layer on which the broken line for tearing is not formed includes an aluminum layer and a polyethylene layer. 4. The outer layer on which the broken line for tearing is formed,
The packaging bag according to claim 1, further comprising a paper layer. 5. The outer layer on which the tearing broken line is formed,
The packaging bag according to claim 1, comprising a paper layer and a polyethylene layer. 6. The outer layer on which the tear line is formed,
The packaging bag according to claim 1, further comprising a cellophane layer, a paper layer and a polyethylene layer. 7. The ratio of the length of the groove portion of the broken line for tearing along the width direction of the bag body to the distance between adjacent groove portions is 1:
It is 1-5: 1, The bag for packaging in any one of Claims 1-6 characterized by the above-mentioned. 8. The ratio between the length of the groove portion of the broken line for tearing along the width direction of the bag and the distance between adjacent groove portions is 2:
It is 1 to 4: 1, The packaging bag according to any one of claims 1 to 6, which is characterized in that. 9. The bag according to claim 1, wherein the bag is used for packaging medicines, body warmers, foods, powders, luxury items, chemical substances, cosmetics and toiletry products. Packaging bag.