JPH09301380A - Storage bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To store or package synthetic resin base films of a plurality of layers to constitute a laminate film in a stacked condition in a compact manner by forming a part where no adhesive is applied capable of providing a storage space between base films to be joined by the adhesive. SOLUTION: A storage bag P is formed of a laminate film 1 in which synthetic resin base films 1A, 1B stacked in two layers are joined with the adhesive 2, and a part 5 where no adhesive is applied is provided on an intended part to provide a storage space 3 for articles to be stored. The storage space 3 is opened outside through an opening 4. This storage bag P can provide the storage space 3 and the opening 4 only by forming the adhesive non-application part 5 between the base films 1A, 1B in manufacturing the laminate film 1, and can be easily manufactured only by cutting a prescribed part of the manufactured laminate film 1.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a storage bag made of a synthetic resin film.

[0002]

2. Description of the Related Art In a conventional storage bag, two synthetic resin films are superposed on each other, and the storage space formed between the opposing surfaces of the two films is surrounded by the outer periphery of the superposed films. It is configured by heat-sealing a peripheral portion excluding an opening forming portion for communicating with each other in a bag shape.

[0003]

However, in the above-mentioned conventional storage bag, the steps of superposing two films and the step of heat-sealing the peripheral portions of the superposed two films into a bag shape are required. It is necessary and there is room for improvement in terms of bag manufacturing cost. Moreover, since air enters between the stacked films, it is easy to be bulky when storing or packing a plurality of manufactured storage bags in a stacked state.

The present invention has been made in view of the above circumstances, and an object thereof is to advantageously manufacture a storage bag which can be compactly stored or packed in a stacked state in terms of manufacturing cost. The point is to be able to.

[0005]

To achieve the above object, the characteristic structure of the storage bag according to claim 1 of the present invention will be described with reference to the numbers used in the later-described embodiments. Of the multiple layers of base film made of synthetic resin forming the film 1, the non-application part 5 of the adhesive 2 that can expose the storage space 3 between the base films 1A and 1B joined by the adhesive 2. Is formed, and an opening 4 for communicating a part of the storage space 3 to the outside is formed. According to the above-mentioned characteristic configuration, at the time of manufacturing a laminated film composed of a base film made of a plurality of layers of synthetic resin, it suffices to form a non-adhesive portion of the adhesive on a part between the base films to be joined with the adhesive. Since the storage space can be exposed by the non-coated portion, the storage bag or the main portion of the storage bag can be manufactured only by cutting the manufactured laminated film into a predetermined size. Moreover, when the laminated film is manufactured, a plurality of layers of the base material film are adhered to each other by rollers or the like, and the base material film itself is thin and easily adheres to each other in a polymerized state. The air does not enter or the amount is small even if it enters, and the thickness is substantially the same as that of the laminated film. Therefore, since only the non-coated portion of the adhesive is formed at the time of manufacturing the laminated film, it can be carried out by simply modifying the existing equipment, and the manufacturing cost of the storage bag can be reduced. Moreover, since it is a storage bag and is in the form of a single film, it is possible to store or pack the storage bags in a stacked state more compactly than in the conventional case.

The characteristic structure of the storage bag according to claim 2 of the present invention will be described with reference to the numbers used in the embodiments described later. The laminate film 1 has four or more layers bonded with an adhesive 2. The base material film 1A, 1B, which is formed of the synthetic resin base film of FIG. 1 and is located on the center side in the layer direction, forms a non-coated portion 5 of the adhesive 2 that can expose the storage space 3. However, the adhesive 2 that exposes the gas filled space 18 is not applied between the base films 1C and 1A that are located at least one of the base films 1A and 1B that expose the storage space 3 in the layer direction. In addition to forming the portion 19, a sealing port 20 for communicating the gas sealing space 18 with the outside is formed. In the above-mentioned characteristic configuration, in the state where the gas is enclosed in the gas-enclosed space through the enclosure port, the gas-enclosed space cushions the air-filled space against shocks from the outside with respect to the objects stored in the storage space. Can be used as Moreover,
Not only the storage space, but also the gas-filled space, like the storage bag according to claim 1, at the time of manufacturing the laminate film,
By forming a non-adhesive portion of the adhesive in a part between the base material films positioned at least one side in the layer direction with respect to the base material film exposing the storage space, the non-applied portion can be exposed. Therefore, the storage bag or the main part of the storage bag can be manufactured only by cutting the manufactured laminated film into a predetermined size. Therefore, in addition to the effect of the first aspect, at the time of use, only by enclosing the gas in the gas encapsulation space, it is possible to suppress the damage of the stored object stored in the storage space due to the impact from the outside. You can

The characteristic structure of the storage bag according to claim 3 of the present invention will be described with reference to the numbers used in the embodiments described later. The gas-filled space 18 is located on both sides of the storage space 3 in between. It is in the point of being formed. In the above-mentioned characteristic configuration, both of the gas-filled spaces can be used as a buffer section (airbag) for buffering the impact from the outside in the layer direction on the stored object stored in the storage space.
Even if a shock is applied from any direction or both directions outside the layer direction, the shock can be absorbed by either one or both of the gas-filled spaces in which the gas is filled, so that the impact is caused from the outside. It is possible to further enhance the function of suppressing damage to the objects stored in the storage space.

The characteristic structure of the storage bag according to claim 4 of the present invention will be described with reference to the numbers used in the later-described embodiments, and a communication hole 22 through which the plurality of gas-filled spaces 18 communicate with each other will be described. It is in the point of being formed. In the above characteristic configuration, when a large impact is applied to one of the gas-filled spaces from the outside, a part of the gas enclosed in the gas-filled space is not impacted through the communication hole. Since the gas flows out to the gas-filled space side, it is possible to suppress the gas-filled space from bursting due to the impact, as compared with, for example, one in which the gas is individually filled in each gas-filled space. Moreover, since it is possible to seal the gas in all the gas-filled spaces through this filling port only by providing the above-mentioned filling port for filling the gas in at least one of the gas-filled spaces, it is possible to fill the gas into the gas-filled space. Work can be done quickly.

The characteristic structure of the storage bag according to claim 5 of the present invention will be described with reference to the numbers used in the later-described embodiments, and the base film 1 exposing the storage space 3 will be described.
An auxiliary space 23 communicating with the bottom side 21 of the storage space 3 is formed between A and 1B. In the above characteristic configuration, by placing the storage bag in the posture in which the storage space is located above the auxiliary space, even if the stored object stored in the storage space is, for example, a food containing water, this food It is possible to receive the water oozing out from the auxiliary space.

The characteristic structure of the storage bag according to claim 6 of the present invention will be described with reference to the numbers used in the embodiments to be described later. The ventilation passage 27 for communicating the storage space 3 with the outside will be described. However, it is formed between the base material films 1A and 1B in a state in which the storage space 3 is brought into close contact when the pressure is reduced. In the above characteristic configuration, an elastically compressible stored object such as a sweater is stored in the storage space, an opening that communicates the storage space with the outside is sealed, and the storage space is compressed from the outside together with the stored object. While the air in the storage space is exhausted to the outside through the ventilation passage, and then the compression of the storage space from the outside is released, the storage space is decompressed due to the elastic restoration of the stored object, which is accompanied by it. Since the inside of the ventilation passage becomes a negative pressure and the base material films forming the ventilation passage are brought into close contact with each other, the air will not reenter from the outside through the ventilation passage into the storage space from which air has been discharged. Absent. Therefore, since an elastically compressible stored object such as a sweater can be stored in the storage space while being compressed, it is possible to suppress the bulkiness of the storage space in which the stored object is stored. Since the air passage is formed with a base film that constitutes a laminate film, for example, as compared with the case where a special valve body for preventing backflow of air from the outside into the storage space is provided, It is possible to achieve simplification and lower manufacturing cost.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment] A storage bag P according to a first embodiment of the present invention shown in FIGS. 1 to 5 is obtained by joining base material films 1A and 1B made of synthetic resin laminated in two layers with an adhesive 2. Between the base films 1A and 1B of the laminated film 1 thus constructed,
A storage space 3 for storing an object to be stored such as a solid substance, a liquid or a gas, and an opening 4 for communicating the storage space 3 with the outside are formed to form a non-coated portion 5 of the adhesive 2. Has been done. The storage bag P can store an object to be stored in the storage space 3 through the opening 4.

Specifically, the storage bag P is manufactured by cutting a predetermined portion of a two-layer laminated film 1 manufactured by a dry laminating method according to a predetermined size. Among the facing surfaces of the one nylon base film fill 1A and the other polyethylene base film fill 1B that compose the film 1, the parts that become the storage space 3 and the opening 4 after cutting are
The non-coated portion 5 of the adhesive 2 is formed. In the storage bag P configured as described above, only the non-application portion 5 of the adhesive 2 is formed between the two base material films 1A and 1B when the laminated film 1 is manufactured, and the non-application portion 5 is used for the storage. Since the space 3 and the opening 4 can be exposed,
It can be manufactured simply by cutting a predetermined portion of the manufactured laminated film 1 into a predetermined size.

Next, an example in which the laminate film 1 constituting the storage bag P of the first embodiment is manufactured by the dry laminating method will be described. As shown in FIGS. 6 to 8, the nylon base material fill 1A fed from the first roll 6 is guided to the coating portion A, and the coating roll 8 and the rubber roll 9 are immersed in the adhesive 2 in the tank 7.
The adhesive 2 is applied to one side surface of the nylon base material fill 1A by using. At this time, a concave portion 8A is formed on the outer peripheral surface of the coating roll 8 and in a portion corresponding to the non-application portion 5 of the adhesive 2, and the adhesive 2 is formed in the portion corresponding to the concave portion 8A. It is configured so that it is not transcribed. In addition, the polyethylene base material fill 1B fed from the second roll 10 is the polyethylene base material fill 1B and the nylon base material fill 1A sent from the coating section A through the drying furnace 11. Lead to the laminating part B to be joined, and these both base film 1A,
After 1B is bonded to the heating metal roll 12 and the rubber roll 13, it is cooled by the cooling roll 14 and the manufactured laminated film 1 is wound by the third roll 15. Examples of the adhesive 2 include urethane-based resin, vinyl acetate-based resin, and natural rubber, which are used after being dissolved in an organic solvent. In this case, when the laminated film 1 is manufactured, the two layers of the base material films 1A and 1B are adhered to each other by rollers or the like, and the base material films 1A and 1B themselves are thin and easily adhere to each other in a polymerized state. Made storage bag P
The air does not enter the storage space 3 or the amount thereof is very small, and the thickness is substantially the same as that of the laminated film 1.

In the first embodiment, the opening 4 is formed at the same time when the laminated film 1 is cut into a predetermined size. However, the present invention is not limited to this structure. In the state in which 1 is cut into a predetermined size, the storage space 3 is surrounded by the portion to which the adhesive 2 is applied, and the main portion of the storage bag P in which the opening 4 is not formed is manufactured. A finished product as the storage bag P may be formed by cutting the edge side to form the opening 4.

In the first embodiment, the nylon base material film 1A and the polyethylene base material film 1 are used.
The laminate film 1 having a two-layer structure with B has been described as an example, but the present invention is not limited to this two-layer structure, and a laminate film having a three-layer structure or more may be used. The storage space 3 and the opening 4 are provided in at least one of the base films to be joined by the agent 2.
May be formed to form a non-coated portion 5 of the adhesive 2, and the storage space 3 and the opening 4 are exposed in each of the base films bonded by the adhesive 2. Possible adhesive 2
The non-applied portion 5 may be formed.

[Second Embodiment] A storage bag P according to a second embodiment of the present invention shown in FIGS. 9 to 12 is a base film 1A, 1B made of synthetic resin laminated in two layers with an adhesive 2. Base film 1 of laminated film 1 formed by joining
A non-coated portion 5 of the adhesive 2 capable of exposing a storage space 3 for storing an object to be stored such as solid matter, liquid or gas between A and 1B.
And an opening 4 that connects the storage space 3 and the outside.
The non-coated portion 5 of the adhesive 2 of both base film 1A, 1B
It is formed on one of the corresponding places. The storage bag P can store an object to be stored in the storage space 3 through the opening 4.

Specifically, the storage bag P is manufactured by cutting a predetermined portion of a two-layer laminate film 1 manufactured by a dry laminating method according to a predetermined dimension. An adhesive agent 2 is applied to a portion which becomes the storage space 3 after cutting, between the facing surfaces of the one nylon base material fill 1A and the other polyethylene base material fill 1B constituting the film 1. The non-applied portion 5 is formed. In the laminating film 1, cuts 16 are continuously formed in the other base film 1B during the laminating process, and the cuts of the cuts 16 that pass through the non-application portion 5 of the adhesive 2 are the openings. 4 is configured. The non-applied portion 5 of the adhesive 2 is configured so that the peripheral portion thereof is surrounded by the applied portion of the adhesive 2. The storage bag P configured in this manner is used when the laminated film 1 is manufactured.
The storage space 3 and the opening 4 are exposed only by forming the non-applied portion 5 and the cut 16 of the adhesive 2 between the two base material films 1A and 1B. Therefore, it is possible to manufacture the laminated film 1 simply by cutting it at a predetermined position into a predetermined size.

Next, an example in which the laminate film 1 constituting the storage bag P of the second embodiment is manufactured by the dry laminating method will be described. As shown in FIGS. 13 to 15, the nylon base material fill 1A fed from the first roll 6 is guided to the coating portion A, and the coating roll 8 and the rubber roll 9 are immersed in the adhesive 2 in the tank 7. Then, the adhesive 2 is applied to one side of the nylon base material fill 1A. At this time, the coating roll 8
A concave portion 8A is formed in a portion of the outer peripheral surface corresponding to the non-applied portion 5 of the adhesive 2, and the adhesive 2 is not transferred to the portion corresponding to the concave portion 8A. . Further, the base material fill 1B made of polyethylene fed from the second roll 10 is guided to the cutting portion C, and the notch 16 is continuously cut by the cutter 17 while passing the portion corresponding to the non-coated portion 5 of the adhesive 2. Put in. Then, from the coating section A to the drying oven 11
Nylon base material fill 1A sent through the cutting section C and polyethylene base material fill 1B sent from the cutting section C are guided to the laminating section B, and both base material films 1A and 1B are heated to the heating metal roll 12 And the rubber roll 9 are attached to each other and then cooled by the cooling roll 14, and the manufactured laminated film 1 is wound by the third roll 15. In this case, when the laminated film 1 is manufactured, the two layers of the base material films 1A and 1B are adhered to each other by rollers or the like, and the base material films 1A and 1B themselves are thin and easily adhere to each other in a polymerized state. Made storage bag P
The air does not enter the storage space 3 or the amount thereof is very small, and the thickness is substantially the same as that of the laminated film 1.

In the second embodiment, the cuts 16 are formed at the same time when the laminated film 1 is manufactured. However, the present invention is not limited to this structure, and the laminated film 1 is predetermined, for example. In the state of being cut into the size, the storage space 3 is surrounded by the portion to which the adhesive 2 is applied, and the main portion of the storage bag P in which the notch 16 is not formed is manufactured, and then the other base forming this main portion is formed. A finished product as a storage bag P may be formed by forming a cut 16 at a position passing through the non-coated portion 5 of the material film 1B and forming the opening 4.

In the second embodiment, the laminate film 1 having the two-layer structure of the nylon base film 1A and the polyethylene base film 1B has been described as an example. The present invention is not limited to this, and may be a laminated film having a three-layer structure or more. In this case, the storage space 3 can be exposed in at least one of the base films to be joined with the adhesive 2. The non-coated portion 5 of the adhesive 2 may be formed, and the non-coated portion of the adhesive 2 that can expose the storage space 3 between the base films to be joined by the adhesive 2. 5 may be formed. The cut line 16 is not limited to the formation position and shape of the second embodiment as long as the cut space 16 can communicate with the storage space 3 and the outside, and can be appropriately changed. Further, the cut line 16 divides the storage space 3 from the outside 2
You may form on the base material film side more than a layer structure.

[Third Embodiment] A storage bag P according to a third embodiment of the present invention shown in FIGS. 16 to 19 comprises base films 1C, 1A, 1B and 1D made of synthetic resin laminated in four layers. Base film 1A, 1B located on the center side in the layer direction of the laminate film 1 formed by bonding with the adhesive 2.
In between, a storage space 3 for storing an object to be stored such as solid matter, liquid or gas, and an opening 4 for communicating the storage space 3 with the outside.
And a base film 1A, 1 which forms a non-applied portion 5 of the adhesive 2 capable of exposing the storage space 3 and the storage space 3 and the opening 4.
Between the base films 1C and 1A located on both outer sides in the layer direction with respect to B, that is, located on both sides of the storage space 3 and the opening 4, and between the base films 1D and 1B. , A gas sealing space 18 for sealing a gas such as air or an inert gas, and a sealing port 20 for communicating the gas sealing space 18 with the outside and sealing the gas in the gas sealing space 18 can be revealed. A non-applied portion 19 of the adhesive 2 is formed. The storage bag P can store an object to be stored in the storage space 3 through the opening 4 and can introduce gas into the gas sealing space 18 through the sealing port 20 so that the sealing port 20 is adhered or bonded. The gas-filled space 1 is obtained by sealing with heat sealing or sealing means such as a sealing tool.
A gas can be enclosed in 8.

Specifically, the storage bag P is manufactured by cutting a predetermined portion of a four-layer laminated film 1 manufactured by a dry laminating method according to a predetermined size. One polyethylene base film fill 1A and the other polyethylene base film fill 1B located on the center side in the layer direction constituting the film 1.
Among the surfaces facing each other, the storage space 3 after cutting
In addition, a non-coated portion 5 of the adhesive 2 is formed in the area that becomes the opening 4, and the one polyethylene base material fill 1A and the nylon base material located on the outer side in the layer direction from the one base material fill 1A. Cutting was performed between the facing surfaces of the film 1C and between the facing surfaces of the other polyethylene base material fill 1B and the nylon base material fill 1D located on the outer side in the layer direction. Later the gas filled space 1
A non-applied portion 19 of the adhesive 2 is formed on the portions that will be 8 and the sealing port 20. In the storage bag P configured in this way, when the laminated film 1 is manufactured, by forming each of the non-coated portions 5 and 19 of the adhesive 2 between the base films 1C, 1A, 1B and 1D, Since the storage space 3, the opening 4, the gas filling space 18 and the filling port 20 can be exposed by the non-coated portions 5 and 19, only a predetermined portion of the manufactured laminated film 1 is cut into a predetermined size. Can be manufactured. The laminated film 1 that constitutes the storage bag P of the third embodiment is manufactured by a dry laminating method, and a detailed description thereof will be omitted.

In the third embodiment, a laminate film 1 having a four-layer structure of two-layer polyethylene base film 1A, 1B and two-layer nylon base film 1C, 1D is taken as an example. As described above, the laminate film is not limited to the four-layer structure, but may be a laminated film having a five-layer structure or more.

In addition, between the base film 1C, 1A located on one side of the base film 1A, 1B exposing the storage space 3 and the opening 4 or in the layer direction, or the base film 1B, 1B.
A non-coated portion of the adhesive 2 capable of exposing a gas-filled space 18 for filling a gas such as air or an inert gas only between D and a filling port 20 for filling the gas in the gas-filled space 18. 19 may be formed. Further, the gas filled space 18
Instead of directly enclosing the gas therein, dry ice may be stored in the gas enclosing space 18 through the enclosing port 20 and the gas may be enclosed in the gas enclosing space 18 by vaporization of the dry ice.

[Fourth Embodiment] FIGS. 20 and 21 show another embodiment of the third embodiment, which is in a layer direction more than the base film 1A, 1B exposing the storage space 3 and the opening 4. An adhesive 2 capable of exposing the gas-filled space 18 and the filling port 20 between the base material films 1C and 1A located on one side.
The non-application portion 19 of the adhesive 2 is formed between the base film 1C and 1A located on the other side, and the non-application portion 19 of the adhesive 2 is formed between the base film 1C and the base film 1A located on the other side. Adhesive 2 for both base material fills 1A and 1B located at
Communication holes 22 for communicating the gas-filled spaces 18 with each other are formed at positions facing each other on the bottom side 21 of the non-application portion 5. Of the two base material fills 1A and 1B in which the communication hole 22 is formed, the peripheral portion of the communication hole 22 is joined by the application of the adhesive 2, and the storage space 3 is formed.
And the gas-filled space 18 are configured so as not to communicate with each other through the communication hole 22.

[Fifth Embodiment] In the storage bag P of each of the above-described embodiments, the base film 1 that exposes the storage space 3 is shown.
Apart from the storage space 3, the storage space 3 is provided between A and 1B.
The auxiliary space 23 communicating with the bottom side 21 may be formed.

For example, as shown in FIGS. 22 and 23, when the auxiliary space 23 is formed in the storage bag P of the first embodiment, between the two layers of base film 1A, 1B constituting the laminate film 1. In addition, the non-application portion 5 of the adhesive 2 that can expose the storage space 3 and the opening 4, and the auxiliary space 23.
The passage 2 that connects the non-coated portion 24 of the adhesive 2 that can expose the bottom surface 21 of the storage space 3 and the auxiliary space 23.
5 to form an uncoated portion 26 of the adhesive 2. Other configurations are the same as those in the first embodiment.

[Sixth Embodiment] In the storage bag P of each of the above-described embodiments, the ventilation path 27 for communicating the storage space 3 with the outside is brought into close contact with the storage space 3 when the storage space 3 is depressurized. It may be formed between the base material films 1A and 1B.

For example, as shown in FIGS. 24 to 26, when the air passage 27 is formed in the storage bag P of the first embodiment, between the two layers of base film 1A, 1B constituting the laminate film 1. A non-application portion 5 of the adhesive 2 that can expose the storage space 3 and the opening 4 and a non-application portion 28 of the adhesive 2 that can expose the ventilation path 27 are formed. The storage bag P configured in this way is, for example, the storage space 3
A sweater, which is an example of an elastically compressible stored object, is housed, the opening 4 is sealed by the sealing means, and the storage space 3 is compressed from the outside together with the sweater through the ventilation passage 27 to the inside of the storage space 3. When the compressed air in the storage space 3 is released from the outside, the pressure in the storage space 3 is reduced due to the elastic recovery of the sweater so that the inside of the storage space 3 is decompressed. The base films 1A and 1B forming the ventilation passage 27 are closely attached to each other, and the ventilation passage 27 is formed in the storage space 3 from which air is discharged.
The air does not come in again from the outside. Other configurations are the same as those in the first embodiment.

[Other Embodiments] In each of the above embodiments, the storage space 3 may be divided into two or more divided storage spaces. In each of the embodiments, the laminated film 1 is manufactured by the dry laminating method, but the manufacturing method is not limited to this, and for example, a wet laminating method, an extrusion laminating method, a hot melt laminating method, a co-extension method is used. You may manufacture by a rouge laminating method etc. In the first and second embodiments, since the width of the laminated film 1 is set to a dimension corresponding to the dimension width of one storage bag P in the vertical direction, the non-applied portion 5 of the adhesive 2 is Although it is formed only at one location in the width direction of the film, when the width of the laminated film 1 has a dimension corresponding to the dimension width of the plurality of storage bags P in the vertical direction, the non-coated portion 5 is a film. It will be formed at a plurality of positions in the width direction. In each of the above-described embodiments, the laminate film 1 having a two-layer structure or a four-layer structure of a nylon base film and a polyethylene base film has been described as an example. Besides, there are polypropylene, vapor-deposited polyester and the like, and it is advisable to appropriately select the combination of the number of layers and the material of the base film according to the purpose of use. In each of the above-described embodiments, the contour shape of the non-application portion 5 of the adhesive 2 forming the storage space 3 or the non-application portion 19 of the adhesive 2 forming the gas filled space 18 is formed in a rectangular shape. However, the shape is not limited to this, and may be formed in a contour shape such as a circle, a cloud shape, or a star shape depending on the purpose of use and the like.

Incidentally, in the means for solving the above-mentioned problems, reference numerals have been written for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of drawings]

FIG. 1 is a perspective view of a storage bag according to a first embodiment of the present invention.

[Figure 2] Front view of the storage bag

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

4 is a sectional view taken along line IV-IV of FIG.

[Fig. 5] III-III of Fig. 2 with the storage space expanded
Line cross section

FIG. 6 is a schematic view showing a manufacturing method by a dry laminating method.

FIG. 7 is a perspective view showing an adhesive applying step in the coating section.

FIG. 8 is a perspective view showing a laminating process in a laminating unit.

FIG. 9 is a perspective view of a storage bag according to a second embodiment of the present invention.

FIG. 10 is a front view of the storage bag.

11 is a sectional view taken along line XI-XI of FIG.

FIG. 12: XI-XI of FIG. 10 with the storage space expanded
Line cross section

FIG. 13 is a schematic view showing a manufacturing method by a dry laminating method.

FIG. 14 is a perspective view showing an adhesive applying step in the coating section.

FIG. 15 is a perspective view showing a laminating process in a laminating unit.

FIG. 16 is a perspective view of a storage bag according to a third embodiment of the present invention.

17 is a sectional view taken along line XVII-XVII in FIG.

18 is a sectional view taken along line XVIII-XVIII in FIG.

FIG. 19 is a sectional view taken along line XIX-XIX in FIG.

FIG. 20 is a sectional view of a storage bag according to a fourth embodiment of the present invention.

21 is a cross-sectional view taken along the line XXI-XXI of FIG.

FIG. 22 is a perspective view of a storage bag according to a fifth embodiment of the present invention.

FIG. 23 is a front view showing a bonding surface of a base film.

FIG. 24 is a perspective view of a storage bag according to a sixth embodiment of the present invention.

FIG. 25 is a front view showing a bonding surface of a base film.

FIG. 26 is a cross-sectional view showing a state where air passages are in close contact with each other.

[Explanation of symbols]

 1 Laminated Film 1A Base Film 1B Base Film 1C Base Film 1D Base Film 2 Adhesive 3 Storage Space 4 Opening 5 Non-Applied Part 18 Gas Filled Space 19 Non-Applied Part 22 Communication Hole 21 Bottom Side 23 Auxiliary Space 27 Ventilation Road

Claims (6)

[Claims] 1. A non-adhesive portion of the adhesive capable of exposing a storage space is formed between the base films made of synthetic resin of a plurality of layers constituting a laminate film, which are joined by an adhesive. A storage bag having an opening for communicating the storage space with the outside. 2. The laminated film is composed of four or more layers of base film made of synthetic resin, which are bonded with an adhesive, and the storage space is provided between the base films located on the center side in the layer direction. An adhesive that forms a non-applied adhesive non-applied portion and exposes a gas-filled space between the base films that are located in at least one of the layer directions of the base film that exposes the storage space. 2. The storage bag according to claim 1, wherein a non-applied portion is formed, and an enclosing port is formed to communicate the gas enclosing space with the outside. 3. The storage bag according to claim 2, wherein the gas filled space is formed on both sides of the storage space. 4. The storage bag according to claim 2, wherein a plurality of the gas-filled spaces are formed with a communication hole that communicates with each other. 5. The storage bag according to claim 1, wherein an auxiliary space communicating with the bottom side of the storage space is formed between the base material films that expose the storage space. 6. An air passage for communicating between the storage space and the outside is formed between the base material films in a state of being brought into close contact with each other when the storage space is depressurized.
Storage bag according to 3, 4, or 5.