JPH076130U - Double bottom bag - Google Patents

Abstract

(57) [Summary] [Structure] The bag is provided with the first bottom portion 2 and is made of a woven or non-woven mesh member in the bag body from the first bottom portion 2 toward the opening 4 of the bag body. A second bottom portion 3 is provided, and a notch portion 5 is provided at a side edge portion of the bag body located between the first bottom portion 2 and the second bottom portion 3, and the bag body has a double bottom. [Effect] When the contents are put in the bag body, since the bottom of the bag body is composed of the first bottom portion 2, the contents can be packaged in a sealed state having no air permeability and water permeability. Next, when the lower part of the bag body is cut off from the cutout portion 5 of the bag body, the second bottom portion 3 made of a woven or non-woven mesh member constitutes the bottom of the bag body, and when the contents are put in the bag body. Becomes a state having breathability and water permeability. Therefore, it is possible to provide a bag having a very wide range of applications by selecting the bottom portion according to the usage situation and contents, and it is also economical.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bag, and more specifically, it is a bag having a double bottom, in which the first bottom 2 is formed of a thermoplastic film and the second bottom is woven or non-woven. The present invention relates to a double bottom bag which is formed of a woven mesh member and which is provided with a notch between the first bottom and the second bottom so that the bottom can be arbitrarily selected.

[0002]

[Prior art]

 A conventional bag having a bottom formed of a woven or non-woven net member is a self-standing bag having an openable and closable bottom member at the lower part of the bag as shown in Japanese Utility Model Laid-Open No. 59744/1984. There is a self-supporting packaging bag characterized by comprising a net-like or porous film.

[0003]

[Problems to be solved by the device]

 In this self-supporting packaging bag, the bottom member is made of a net-like or porous film, and has good air permeability from the beginning to prevent the contents from becoming stuffy during packaging.

However, such a structure has a congenital defect that the bottom member of the packaging bag is a net-like or porous film from the beginning and can be used only in a very specific situation. On the other hand, the bottom member of the packaging bag made of a normal thermoplastic film is made of a thermoplastic film, and it cannot be expected to have air permeability.

[0005]

[Means for Solving the Problems]

 In view of this point, the present invention provides a bag body obtained by polymerizing and heat-sealing both side edges of the thermoplastic films 1 and 1, wherein the bag body is provided with the first bottom portion 2 and A second bottom portion 3 made of a woven or non-woven mesh member is provided in the direction of the opening 4 of the bag body from the bottom 2 of the bag body, and the side of the bag body located between the first bottom portion 2 and the second bottom portion 3. The problem can be solved by providing the notch 5 at the edge.

[0006]

[Action]

 With this structure, the bag itself is first made of a thermoplastic film bag provided with the bag side edge seal portions 1a, 1a on both side edges, and the inside or inside of the bag is woven or non-woven. It has a second bottom portion 3 made of a net material, and is made of a bag body having a double bottom. Therefore, when the contents are put in the bag body as it is, since the bottom of the bag body is composed of the first bottom portion 2, the contents can be packaged in a hermetically sealed state having no air permeability and water permeability.

Next, the lower part of the bag is cut off from the notch 5 on the side of the bag located between the first bottom 2 and the second bottom 3. In this case, the bottom of the bag body composed of the first bottom portion 2 is cut out from the bag body, and the second bottom portion 3 constitutes the bottom of the bag body, and is made of the woven or non-woven mesh member. It becomes a bag body having a second bottom portion 3, and when the contents are put in the bag body, it has air permeability and water permeability, and becomes a self-supporting state.

[0008] For example, when selling an article that needs to have air permeability when used, when selling an article that does not have air permeability at the time of sale and needs to be sold in a sealed state, By adopting the structure, it is possible to wrap the contents with one bag body by appropriately selecting the necessity of air permeability or water permeability according to the contents.

[0009]

【Example】

 The present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an embodiment of the bag body according to the present invention, in which 1 is a thermoplastic film, 2 is a first bottom portion, and 3 is a second bottom portion.

The bag body is formed by folding a thermoplastic film of polyethylene, polypropylene or the like or a thermoplastic multilayer composite film in two, and heat-sealing both side edges of the film, thereby sealing the bag side edge seal portion 1a, A bag is formed by forming 1a. Therefore, the first bottom portion 2 is formed by the folded portion of the thermoplastic film 1, 1.

The first bottom portion 2 is formed by stacking a plurality of thermoplastic films such as polyethylene and polypropylene, or a thermoplastic multilayer composite film thereof, and polymerizing and heat-sealing them. May be. Therefore, in this case, the first bottom portion 2 is constituted by the sealing portion which is polymerized and heat-sealed.

Further, the shape of the first bottom portion 2 may be one that forms a rectangular bottom body, and in this case, as shown in FIGS. 3 and 4, the thermoplastic film 1 in which the folded portions are overlapped, It may be folded in one.

Next, a sheet made of a woven or non-woven mesh member is folded in two in the bag body thus configured and disposed in the bag body. It should be noted that the arrangement in which the sheet is folded in two is one embodiment, and the present invention is not limited to this, and a sheet made of a woven or non-woven mesh member having a plurality of folds may be provided.

The both sides of the sheet made of the woven or non-woven mesh member thus arranged, that is, the portions in contact with the both side edges of the bag body are polymerized at the same time as the heat fusion of the both side edges of the bag body. The second bottom side edge seal portions 3a, 3a are formed by heat fusion. In this case, both sides of the sheet made of a woven or non-woven mesh member and the portions in contact with both side edge portions of the bag body are polymerized and heat-sealed in advance to form the second bottom side edge seal portions 3a, 3a. In addition to the above structure, both side edge portions of the bag body may be polymerized and heat-sealed to form the bag body side edge seal portions 1a and 1a. These are design matters.

Next, regarding the edge portions of both sides of the sheet of the second bottom portion side edge seal portions 3a, 3a of the second bottom portion 3 in a direction perpendicular to the woven or non-woven mesh member, The second bottom both-side sealing portions 3b, 3b are formed by polymerizing and heat-sealing with the respective thermoplastic films 1, 1 in contact with the portions.

The second bottom both-side seal portions 3b, 3b may also be formed by polymerization heat fusion in advance, and then both side edges of the bag body may be polymerized heat fusion. The second bottom portion 3 is formed by the polymerization heat fusion of these.

As for the second bottom portion 3, a sheet made of a woven or non-woven mesh member is M-shaped as shown in FIGS. 5 and 6 or W-shaped as shown in FIGS. 7 and 8. The second bottom portion 3 may be formed by polymerizing and heat-sealing with the bag body in the form of being folded into.

Although the second bottom portion 3 is configured as described above, the second bottom portion 3 may be arranged at any position as long as it has the second bottom portion 3 inside the bag. 1 may be provided near the opening of the bag, or may be provided at a position in contact with the first bottom 2 as shown in FIG.

A notch 5 is provided on the side edge of the bag body between the first bottom 2 and the second bottom 3 configured as described above. When the portion having the first bottom portion 2 of the bag body is cut out from the cutout portion 5, the bottom of the bag body is constituted by the second bottom portion 3.

Therefore, as shown in FIGS. 3, 8 and 11, the bottom of the bag itself is formed by a woven or non-woven mesh member having good breathability and water permeability and the bag body. It is the thermoplastic film that constitutes the side portion of itself.

With such a configuration, it can be used or sold as a packaging bag for items that do not leak contents or that need to block the outside air at the beginning, and can be used by the notch 5 when using it later. When the first bottom portion 2 is cut off, the second bottom portion 3 can be used as a self-standing packaging bag with good air permeability and water permeability.

For example, at the time of sale, such as when selling a fragrance, the bag has the first bottom portion 2, so the outside air is shut off, and the first bottom portion 2 is cut off at the time of use so that the second bottom portion 3 is cut off. It can be exposed and sprayed with air freshener. In this way, the bottom portion can be configured for various articles according to the purpose of use.

Also, by using this bag when selling goods, it can be used for various purposes with only the bag other than the goods that were put in this bag at a later date, and it is not only very economical, Can be used or recycled. In particular, since the second bottom portion 3 is made of a woven or non-woven net material having good air permeability and water permeability, the second bottom portion 3 can be applied to a drainage bag for storing garbage for discarding kitchen garbage.

[0024]

[Effect of device]

 As described above, since the bag has the first bottom portion 2 made of the thermoplastic film and the second bottom portion 3 made of the woven or non-woven cloth, in the normal state, the first bottom portion 2 made of the thermoplastic film is used. It can be used as a packaging bag that does not have air permeability and water permeability, and by cutting the bottom having the first bottom 2 from the notch 5 as necessary, the second bottom 3 made of woven or non-woven mesh can be obtained. Since it constitutes the bottom of the bag, it has an effect that it can be used as a self-supporting bag having air permeability and water permeability.

Therefore, with the bag according to the present invention, the bottom portion can be selected according to the usage situation and contents, and a bag with a very wide range of application can be provided, which is not only very useful but also economical.

[0026] In addition, for a special article that exhibits the characteristics of the article by blocking air permeability and water permeability at the time of sale and having air permeability and water permeability at the time of use, without using a special container This can be dealt with by using the bag according to the present invention for packaging.

[Brief description of drawings]

FIG. 1 is a view showing an embodiment of a bag body according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a view showing an embodiment in which a bottom having a first bottom portion 2 is cut out from a notch portion 5 of the bag body according to FIG. 1 and a bottom portion of the bag body is constituted by a second bottom portion 3;

FIG. 4 is a view showing an embodiment in which the folded-back portion of the first bottom portion 2 of the bag body according to the present invention is folded into the laminated thermoplastic films 1 and 1;

5 is a sectional view taken along line BB of FIG.

FIG. 6 is an embodiment of a bag body according to the present invention in which a sheet made of a woven or non-woven mesh member is folded into an M-shape to form a second bottom portion 3 and is polymerized and heat-sealed to the bag body. Showing

7 is a sectional view taken along line CC of FIG.

FIG. 8 is a view showing an embodiment in which a bottom having a first bottom portion 2 is cut out from a notch portion 5 of the bag body according to FIG. 6 and a bottom portion of the bag body is constituted by a second bottom portion 3;

FIG. 9 is an embodiment of a bag body according to the present invention in which a sheet made of a woven or non-woven mesh member is folded into a W shape and the second bottom portion 3 is polymerized and heat-sealed to the bag body. Showing

10 is a sectional view taken along line DD of FIG.

11 is a first bottom portion 2 of the bag body according to FIG.
A cross-sectional view taken along line DD of an embodiment in which a bottom having a cutout is cut out to form the bottom of the bag body by the second bottom portion 3.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Thermoplastic film 1a Bag side edge seal part 2 1st bottom part 3 2nd bottom part 3a 2nd bottom part side edge seal part 3b 2nd bottom both sides seal part 4 Opening 5 Notch 6 Fold

Claims (1)

[Scope of utility model registration request] 1. A bag body obtained by polymerizing and heat-sealing both side edges of thermoplastic films 1 and 1, wherein a first bottom portion 2 is formed on the bag body.
And a second bottom portion 3 made of a woven or non-woven mesh member is provided in the bag body in the direction of the opening 4 of the bag body from the first bottom portion 2, and the first bottom portion 2 and the second bottom portion 3 are provided. A double bottom bag, characterized in that a notch 5 is provided at a side edge portion of the bag body located between the bottom parts 3 of the.