JP3815866B2 - Plastic pouch - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a plastic pouch having a branched portion or a bent portion made of a single-layer or multiple-layer plastic film.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, pouches having various shapes and structures made of single-layer or multi-layer plastic films have been proposed as refill containers for beverages, retort foods, seasonings, detergents, cosmetics, and the like. These pouches are easy to fill the contents, and when transferring the contents to the container, the outlet can be easily formed and the contents can be easily poured out, and also easy to transport and store What is
In addition, the medical infusion solution and its solution, the powder preparation for injection and its solution, seasonings, mixed adhesives and the like are stored in a premixed state to separate and store the contents that cause a reaction and change quality, Proposed as a pouch that can be easily mixed without adjusting the mixing ratio when in use, and that prevents the entry of foreign matter from the outside. Has been. (See, for example, JP-A-63-19149, JP-A-4-364850, JP-A-4-364851)
These separation and storage type pouches are bent near the partition after filling to prevent the components from being separated and mixed due to force applied to the pouch during transportation and storage. After that, it is packaged and distributed in a paper container such as an outer bag or cardboard that is configured separately from the pouch. Therefore, a packaging process using another material after filling the contents is required, which causes an increase in cost.
[0003]
In order to improve the drawbacks of these conventional plastic pouches, the inventors have invented a plastic pouch having a spout formed by branching from a pouch side wall and / or a small chamber serving as a storage chamber. did. (Japanese Patent Application No. 8-354216, Japanese Patent Application No. 8-354217)
These pouches are formed by extending at least one of the side walls of the pouch at a position below the top of the pouch so as to extend outward to form at least one chamber that is easily filled with the contents. In addition to being able to easily form a spout when taking out an object, it can also be used as a separate storage type pouch.
However, even in these pouches, when an external force is applied to the pouch main body, a branched chamber is formed, which hinders transportation and storage, and in some cases, the crushing easily openable seal portion provided as a partition may be destroyed. In addition, it is necessary to wrap and circulate with an outer bag or a paper container configured separately from the pouch, which similarly causes an increase in cost.
[0004]
[Problems to be solved by the invention]
Therefore, the present invention solves the above-mentioned problems of the prior art, and can be transported and stored as it is without requiring separate packaging materials such as a separate outer bag or paper container after filling the contents. The purpose of the present invention is to provide a plastic pouch capable of omitting the packaging process using the packaging material, reducing the space required for transportation and storage, and in some cases not causing the breakage of the crushable easily opened seal portion provided as a partition. It is.
[0005]
[Means for Solving the Problems]
  In order to achieve such an object, the present invention has the following configuration.
1. In a plastic pouch formed of a single-layer or multiple-layer plastic film and forming at least one chamber branched by extending at least one side wall of the pouch located below the top of the pouch to the outside, the branched chamber is A plastic pouch that communicates with a pouch body and has the small chamber fixed to a side wall of the pouch.
2.In a plastic pouch formed of a single-layer or multi-layer plastic film and forming at least one chamber branched by extending at least one side of the pouch side wall located below the top of the pouch to the outside,The branched chamber and the pouch body are separated by a partition.Characteristic plastic pouch.
3. 3. The plastic pouch according to 2, wherein the partition portion is provided with at least a part that is easily crushable and openable.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the drawings.
1 to 3 are views showing an example of a plastic pouch according to the present invention. FIG. 1 is a front view of the pouch before filling contents, FIG. 2 is a perspective view of the pouch after filling contents, and FIG. It is the longitudinal cross-sectional view.
In these figures, reference numeral 1 is a plastic pouch, reference numeral 2 is a pouch body, reference numeral 3 is a branched chamber, reference numeral 4 is an easily crushable seal part, reference numeral 5 is a heat seal part, reference numeral 6 is a fixing part, reference numeral 7 is a note. The exit, and reference numeral 9 is a gusset portion constituting the bottom surface of the pouch.
[0007]
This plastic pouch 1 is a kind of so-called standing pouch, and heat-seal the gusset portion 9 constituting the bottom of the pouch to the side wall of the pouch so that the pouch has a self-supporting property when filled with the contents. .
In this pouch, a branched chamber 3 formed by extending the side wall of the pouch located below the top of the pouch outward is provided to communicate with the pouch body 2. A tapered spout 7 is formed at the tip of the small chamber 3 and is sealed by a crushable easy-opening seal portion 4 that is broken by applying pressure, but a partition is provided at the branch portion of the small chamber 3. The small chamber 3 communicates with the pouch body 2. This pouch is heat-sealed on the gusset portion 9 constituting the bottom surface and the three sides of the both sides, and after forming a crushable easily openable seal portion 4 at the tip spout 7 of the small chamber 3, the contents from the unsealed portion above the bag And heat sealed. The small chamber 3 is fixed to the pouch main body 2 by a fixing portion 6 at the spout portion and both side edge portions. In order to pour out the contents, when the pouch body 2 is pressed after the fixing portion 6 is unfixed, the contents flow into the small chamber 3 from the pouch body 2, and then the crushable easily openable seal portion 4 is broken and the spout 7 opens and the contents are poured out. After filling the contents, the plastic pouch 1 is fixed to the pouch body 2 by the fixing portion 6 in a state where the small chamber 3 is bent as seen in FIGS. 2 and 3, and is transported or stored as it is.
[0008]
When a force is applied to the plastic pouch 1 from the outside, when the small chamber 3 branched by the fixing portion 6 is not fixed, the small chamber 3 not only prevents the transportation and storage from rising, but also provides an easily squeezable seal. The part 4 may be destroyed and the contents may leak. However, in the case where the small chamber 3 is fixed by the fixing portion 6, the rising or the crushable easily openable seal portion 4 does not occur, so that the pouch can be transported or stored as it is.
This pouch is suitably used as a refilling container for normal beverages such as liquid or powder, retort foods, detergents, seasonings and the like.
[0009]
Although there is no restriction | limiting in particular as a method of fixing a branch part or a bending part to a plastic pouch by the fixing | fixed part 6 in this invention, As a preferable fixing method, the plastic pouch which fixes the packaging material which comprises a plastic pouch by heat seal is used. Fix with a separate adhesive tape or clip, join and fix a plastic pouch with adhesive, adhesive or double-sided adhesive tape, attach a surface fastener to the plastic pouch and fix it, unevenness that engages with the plastic pouch mutually For example, a fixing method such as cutting or cutting may be provided.
[0010]
Next, details of the fixing part 6 of the plastic pouch will be described in detail with reference to the drawings.
4A and 4B are partially enlarged views showing an example in which the fixing portion 6 is formed by heat sealing. FIG. 4A is a schematic cross-sectional view showing a state before heat sealing and FIG. 4B is a state after heat sealing.
In this example, the squeeze of the inner layer film 21 that constitutes the pouch by heat sealing at the portion (see FIG. 1) that becomes the fixing portion 6 of the pouch body 2 and the branched chamber 3 of the plastic pouch 1 composed of the multilayer films 21 and 22. The fixing portion 6 is formed using the above.
[0011]
FIG. 5 is a partially enlarged view showing another example of forming the fixing portion 6 by heat sealing. FIG. 5A is a schematic cross-sectional view showing a state before heat sealing and FIG. 5B is a state after heat sealing.
In this example, a notch 23 reaching the inner layer film 21 of the multilayer film is provided at the portion that becomes the fixing part 6 of the pouch body 2 and the branched chamber 3 of the plastic pouch 1 composed of the multilayer films 21 and 22, and heat The fixing portion 6 is formed by joining with a seal.
[0012]
When the fixing part 6 is formed by heat sealing as seen in FIGS. 4 and 5, the heat sealing part may be peeled in order to remove the fixing at the fixing part 6 when using a plastic pouch.
Further, as shown in FIG. 6, an easy opening portion 25 such as perforation, score processing, and laser processing and a notch 26 are provided in the periphery of the fixing portion 6 as necessary, and the easy opening portion 25 is cut off. You may make it remove fixation.
[0013]
FIG. 7 is a partially enlarged schematic view showing an example of forming the fixing portion 6 with an adhesive tape. In this example, the fixing portion 6 is formed by the adhesive tape 27, but in order to facilitate tearing of the adhesive tape 27 when using a plastic pouch, an easy-opening processing portion 28 is provided in the tearing direction of the adhesive tape 27. is there.
Instead of the adhesive tape of FIG. 7, the fixing portion 6 can be formed by a clip.
[0014]
FIG. 8 is a partially enlarged view showing an example of forming the fixing portion 6 with a jig, (a) is an enlarged plan view of the fixing portion 6 before fixing, and (b) is a state of the fixing portion 6 before fixing. FIG. 4C is a schematic cross-sectional view showing a state of the fixing portion 6 after fixing.
In this example, a hole 30 is provided in the heat seal portion 5 of the small chamber 3 branched from the pouch body 2 of the plastic pouch, and a jig 32 having a locking end portion 33 having a diameter slightly larger than the inner diameter of the hole 30 is provided at both ends. The fixing portion 6 is formed by being fitted into 30. A notch 31 is provided at the periphery of the hole 30 so that the jig 32 can be easily fitted.
[0015]
FIG. 9 is a partially enlarged view showing an example of forming a fixing portion by providing a latching means that engages with the pouch body 2 and the branched chamber 3 of a plastic pouch, and (a) is a state before fixing. b) is a schematic diagram showing a state after fixation.
In this example, a notch 34 is provided in the pouch body 2 of a plastic pouch, and a locking part 35 that engages with the notch 34 is provided in the branched chamber 3 to form the fixing part 6.
Instead of such locking means, the fixing portion 6 may be formed by an uneven portion or a hook-and-loop fastener that are fitted to each other.
[0016]
Moreover, the fixing | fixed part 6 can also be formed by joining and fixing the small chamber 3 branched with the pouch main body 2 of the plastic pouch with an adhesive agent, an adhesive, or a double-sided adhesive tape. In such a fixing portion 6, similarly to FIG. 6, an easy opening portion 25 or a notch portion 26 is provided in the peripheral portion of the fixing portion 6, and the fixing can be removed by cutting the easy opening portion. .
In the plastic pouch of the present invention, the position and the number of the fixing portions 6 can be arbitrarily selected. For example, they can be provided on both sides of the end portion of the plastic pouch 1 as shown in FIGS. Further, the fixing portion 6 may be provided in the vicinity of the spout 7.
[0017]
The plastic pouch of the present invention is composed of a single-layer or multi-layer plastic film, but the plastic film to be used is not particularly limited, and any of those usually used for a pouch can be used.
Examples of the plastic material suitable for constituting the plastic film include crystalline polypropylene, crystalline propylene-ethylene copolymer, crystalline polybutene-1, crystalline poly4-methylpentene-1, low-, medium-, Or polyolefins such as high-density polyethylene, ethylene-vinyl acetate copolymer (EVA), EVA saponified product, ethylene-ethyl acrylate copolymer (EEA), ion-crosslinked olefin copolymer (ionomer); polystyrene, styrene- Aromatic vinyl copolymers such as butadiene copolymers; vinyl halide polymers such as polyvinyl chloride and vinylidene chloride resins; polyacrylic resins; acrylonitrile-styrene copolymers, acrylonitrile-styrene-butadiene copolymers, etc. Nitrile polymer; nylon 6, nylon 6. Polyamides such as para or metaxylylene adipamide; polyesters such as polyethylene terephthalate and polytetramethylene terephthalate; various polycarbonates; fluororesins; thermoplastic resins such as polyacetals such as polyoxymethylene it can.
Films made of these plastic materials are used as unstretched or uniaxially or biaxially stretched films.
[0018]
The plastic film used in the packaging bag of the present invention can be constituted by laminating these plastic films in a single layer or by laminating two or more kinds, and one or more kinds of these plastic films, A metal foil such as aluminum, paper, cellophane, or the like can also be laminated.
In particular, in the case of contents that require gas barrier properties, a polyvinylidene chloride resin layer, an EVA saponified layer, a resin layer having a vapor-deposited film of a metal oxide such as aluminum or silicon oxide, or a metal foil such as aluminum It is preferable to use a laminated film including the like. When these laminated films are produced, an anchor agent made of an epoxy resin, a urethane resin, a polyethyleneimine resin, or the like can be interposed between the respective layers as necessary.
[0019]
In order to give rigidity and heat insulation to the film that constitutes the pouch, it is also possible to use films made of various synthetic resin foams, and additives such as titanium oxide, calcium carbonate, and carbon to various synthetic resins. A filled film can also be used. Whether the plastic film is a single layer or what kind of layer configuration it may be selected according to the properties of the contents filled in the pouch.
The plastic film can be produced by an ordinary method such as a casting method, a T-die method, a calendar method, or an inflation method. The laminated film can be produced by a conventional method such as dry lamination of a preformed film, coating on a substrate film, melt coextrusion.
When a laminated film is used as the film constituting the pouch, it is usually preferable to use a resin having heat sealing properties such as polypropylene as the inner surface film in order to provide heat sealing properties.
[0020]
Next, another embodiment of the plastic pouch of the present invention will be further described based on the drawings.
10 to 12 are views showing other examples of the plastic pouch of the present invention, FIG. 10 is a front view of the plastic pouch before filling the contents, FIG. 11 is a perspective view of the plastic pouch after filling the contents, and FIG. FIG. 12 is a longitudinal sectional view of the plastic pouch after the contents are filled.
In these drawings, reference numeral 1 is a plastic pouch, reference numeral 2 is a pouch body 2, reference numeral 3 is a branched chamber, reference numeral 5 is a heat seal part, reference numeral 6 is a fixing part, reference numeral 7 is a spout, reference numeral 8 is provided at a spout. An easy opening portion, symbol 9 is a gusset portion constituting the bottom surface of the pouch, and symbol 10 is a tear tab provided at the spout.
[0021]
The basic structure of this plastic pouch is the same as that of FIGS. 1 to 3, but in this pouch, the spout 7 formed at the tip of the branched chamber 3 is formed by a normal tight heat seal portion. In order to facilitate opening, the spout 7 is provided with an easy opening portion 8 and a tear tab 10 by perforation, score processing, laser processing, or the like.
[0022]
FIGS. 13 to 15 are diagrams showing other examples of the plastic pouch of the present invention, FIG. 13 is a front view of the plastic pouch before filling the contents and attaching the plug, and FIG. 14 is the plastic after filling the contents. FIG. 15 is a perspective view of the pouch, and FIG. 15 is a longitudinal sectional view of the plastic pouch after the contents are filled.
In these drawings, reference numeral 1 is a plastic pouch, reference numeral 2 is a pouch body 2, reference numeral 3 is a branched chamber, reference numeral 4 is an easily crushable seal part, reference numeral 5 is a heat seal part, reference numeral 6 is a fixing part, reference numeral 7 is The spout, reference numeral 18 is a plug provided at the spout, and reference numeral 9 is a gusset portion constituting the bottom surface of the pouch.
[0023]
In this plastic pouch 1, the branched chamber 3 is provided so as to communicate and branch from the pouch body 2, and a partition made up of a crushable easy-to-open sealable portion 4 is provided at the branch portion of the chamber 3. A powder component 15 is stored in the chamber 3, and a solution 16 of the powder component 15 is stored in the pouch body 2. The branched chamber 3 is fixed to the pouch body 2 by fixing portions 6 provided at both ends of the tip, and a spout 7 for pouring the contents when the plastic pouch 1 is used at the center of the tip of the chamber 3. And its mouth plug 18 are provided.
[0024]
The plastic pouch 1 is fixed to the pouch body 2 by the fixing portion 6 in a state where the branched chamber 3 is folded as shown in FIGS. 14 and 15 after filling the contents, and is transported or stored as it is.
When a force is applied to the plastic pouch 1 from the outside in the direction of arrow 41, the small chamber 3 rises in the direction of arrow 42 when the small chamber 3 is not fixed by the fixing portion 6 (see FIG. 16). The force transmitted through the solution 16 is concentrated in the direction of breaking the crushable easily openable seal portion 4, and the crushable easily openable seal portion 4 is broken.
However, when the small chamber 3 is fixed to the pouch main body 2 by the fixing portion 6, even when a force is applied from the outside in the direction of the arrow 41, the small chamber 3 does not rise, and the force is distributed throughout the pouch main body 2. Therefore, the crushing easily openable seal portion 4 does not break. Therefore, the plastic pouch 1 of the present invention can be circulated as it is without using a packaging material such as a separate outer bag or a paper container.
When the plastic pouch 1 of the present invention is used, if the pouch body 2 is pressed by removing the fixing at the fixing portion 6, the crushable easily openable seal portion 4 is broken and the solution 16 flows into the small chamber 3. Then, the powder component 15 is dissolved. The obtained solution is led out from the spout 7 and used for drip and the like.
[0025]
17 to 19 are views showing other examples of the plastic pouch of the present invention. FIG. 17 is a perspective view of the pouch after the contents are filled, FIG. 18 is a longitudinal sectional view thereof, and FIG. It is the elements on larger scale of the small chamber 3.
The basic structure of this plastic pouch is the same as that of the pouches of FIGS. 13 to 15, but in this pouch, the branched chamber 3 has a double structure consisting of an inner bag 11 and an outer bag 12, and the inner bag 11 has a powder. A component 15 is stored, and a desiccant 13 is stored in the space between the inner bag 11 and the outer bag 12. (See Figure 19)
In this pouch, as shown in FIG. 17, the end of the branched chamber 3 is tapered to form a spout 7, and the small chamber 3 is attached to the pouch body 2 by fixing portions 6 at both side edges and spouts. It is fixed. In the pouch body 2, a solution 16 of the powder component 15 is accommodated, and the pouch body 2 and the small chamber 3 are partitioned by an easily crushable openable seal portion 4.
[0026]
20 to 22 are views showing other examples of the plastic pouch of the present invention, FIG. 20 is a plan view showing a state in which the plastic pouch is opened before filling the contents, and FIG. 21 is a plastic pouch after filling the contents. FIG. 22 is a plan view showing a state in which the plastic pouch is folded and fixed after filling the contents.
In these drawings, reference numeral 1 is a plastic pouch, reference numerals 52 and 53 are storage chambers, reference numeral 4 is an easily crushable seal part, reference numeral 5 is a heat seal part, reference numeral 6 is a fixing part, reference numeral 7 is a spout, and reference numeral 18. Represents a plug provided at the spout.
[0027]
In the plastic pouch 1, two storage chambers 52 and a storage chamber 53 are provided so as to be adjacent to each other in the same plane. The storage chamber 53 includes an inner bag 11 that communicates with the storage chamber 52 and an outer bag 12 that covers the entire inner bag 11, and the inner bag 11 and the storage chamber 52 are partitioned by a crushable easily openable seal portion 4. In the inner bag 11 of the storage chamber 53, for example, powder components 15 such as medical infusion components and powder formulations for injection are stored, and in the storage chamber 52, the solution 16 is stored. A desiccant 13 and an oxygen scavenger 14 are enclosed in the space between the inner bag 11 and the outer bag 12 of the storage chamber 53.
The plastic pouch 1 can be transported and stored as it is after being filled in the storage chambers 52 and 53 and then bent as shown in FIG. When the plastic pouch is used, when the plastic pouch 1 is expanded as shown in FIG. 21 by releasing the fixation at the fixing portion 6 and the storage chamber 52 is pressed, the crushable easily openable seal portion 4 is destroyed. Thus, the solution 16 in the storage chamber 52 flows into the inner bag 11 of the storage chamber 53 and dissolves the powder component 15. The obtained solution is led out from the spout 7 and used for drip and the like.
[0028]
The plastic pouch is bent as shown in FIG. 22 and fixed by the fixing portion 6, so that the force applied to the pouch is applied to the pouch even when the impact force due to dropping or the pressing force due to stacking is applied to the pouch during transportation or storage. It is dispersed throughout and the crushable easily openable seal portion 4 is not broken. In a state where the pouch is not fixed by the fixing portion 6, the force applied to the pouch from the outside is concentrated in the direction of breaking the crushable easily openable seal portion 4, and the crushable easily openable seal portion 4 is broken.
In this way, by folding and fixing a plastic pouch having a crushable and easy-to-open seal part, it can be transported and stored as it is without packaging using a packaging material such as a separate outer bag or paper container. In addition to reducing the space required for transportation and storage, the manufacturing and distribution costs can be reduced and resources can be saved.
In the above example, the storage chamber 53 is configured to have a double structure composed of the inner bag 11 and the outer bag 12, but the storage chamber 53 may be configured only by the inner bag 11 without using the double structure.
[0029]
In each of the above examples, an example in which one branched chamber is provided has been described. However, in the plastic pouch of the present invention, the configuration is appropriately changed, for example, a plurality of chambers are branched from the pouch body. Needless to say, you can. .
Moreover, there is no restriction | limiting in particular in the shape of the plastic pouch of this invention, It can be set as various shapes, such as a flat bag, a gusset bag, a standing pouch, and a pouch which has a gusset part in an upper surface and a bottom face.
[0030]
In the plastic pouch of the present invention, a crushing easy opening that is destroyed by applying pressure to form a partition between the small chamber and the main body of the pouch, a spout of the branched chamber, or a partition between a plurality of storage chambers. However, there is no particular limitation on the method for forming the easily crushable sealable portion, and the pouch can be formed by a usual method.
For example, by using the fact that synthetic resin is less heat-sealable than dissimilar synthetic resins, heat sealing is performed by interposing a different synthetic resin film between the base film of the part that forms the easy-to-crush seal part of the pouch. Alternatively, a crush easy-open sealable portion can be formed by sandwiching a layer blended with a resin incompatible with the base material film and then heat-sealing.
[0031]
【The invention's effect】
The plastic pouch of the present invention can be transported and stored as it is without requiring packaging materials such as separate outer bags and paper containers after filling the contents. It can be omitted, reduces the space required for transportation and storage, and does not cause breakage of the crushable easy-open seal part provided as a partition in some cases, and has high practical value.
[Brief description of the drawings]
FIG. 1 is a front view showing an example of a plastic pouch of the present invention and showing a plastic pouch before filling contents.
FIG. 2 is a perspective view after the plastic pouch of FIG. 1 is filled with contents.
FIG. 3 is a longitudinal sectional view after the plastic pouch of FIG. 1 is filled with contents.
FIG. 4 is a view showing an example of a fixing portion of the plastic pouch according to the present invention.
FIG. 5 is a view showing another example of the fixing portion of the plastic pouch according to the present invention.
FIG. 6 is a view showing another example of the fixing portion of the plastic pouch according to the present invention.
FIG. 7 is a view showing another example of the fixing portion of the plastic pouch according to the present invention.
FIG. 8 is a view showing another example of the fixing portion of the plastic pouch according to the present invention.
FIG. 9 is a view showing another example of the fixing portion of the plastic pouch according to the present invention.
FIG. 10 shows another example of the plastic pouch of the present invention, and is a front view of the plastic pouch before filling the contents.
11 is a perspective view after the plastic pouch of FIG. 10 is filled with contents.
12 is a longitudinal cross-sectional view after the plastic pouch of FIG. 10 is filled with contents.
FIG. 13 shows another example of the plastic pouch of the present invention, and is a front view of the plastic pouch before filling the contents.
14 is a perspective view after the plastic pouch of FIG. 13 is filled with contents.
15 is a longitudinal sectional view after the plastic pouch of FIG. 13 is filled with contents.
16 is a diagram illustrating a state when force is applied after filling the plastic pouch of FIG. 13 with contents.
FIG. 17 shows another example of the plastic pouch of the present invention, and is a perspective view of the plastic pouch after the contents are filled.
18 is a longitudinal sectional view of the plastic pouch of FIG.
19 is a partially enlarged view of the branched chamber shown in FIG.
FIG. 20 is a plan view showing an example of the plastic pouch of the present invention and showing a state in which the plastic pouch before filling the contents is opened.
21 is a longitudinal sectional view after the plastic pouch of FIG. 20 is filled with contents.
22 is a plan view showing a state where the plastic pouch of FIG. 20 is filled with contents and then bent and fixed. FIG.
[Explanation of symbols]
1 Plastic pouch
2 Pouch body
3 Small chamber
4 Crush easy opening seal part
5 Heat seal part
6 fixed part
7 spout
8, 25, 28 Easy-open processing part
9 gusset
10 Tear tab
11 Inner bag
12 Outer bag
13 Desiccant
14 Oxygen absorber
15 Powder component
16 Solution
18 Mouth plug
21 Inner film
22 Outer film
23 Notch
26 notches
27 Adhesive tape
30 holes
31, 34 cutting
32 Jig
33 Locking end
34 Locking part
52, 53 storage room

Claims (3)

  In a plastic pouch formed of a single-layer or multiple-layer plastic film and forming at least one chamber branched by extending at least one side wall of the pouch located below the top of the pouch to the outside, the branched chamber is A plastic pouch that communicates with a pouch body and has the small chamber fixed to a side wall of the pouch. A plastic pouch made of a single-layer or multi-layer plastic film, wherein at least one of the side walls of the pouch at a position below the top of the pouch is extended outward to form at least one small chamber, A plastic pouch characterized in that the pouch body is partitioned by a partitioning portion .   3. The plastic pouch according to claim 2, wherein the partition part is provided with at least a crushing and easy-opening seal part.

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