Vacuum Storage Bag and Preparation Method Thereof

Abstract

The present invention discloses a vacuum storage bag and a preparation method thereof. The vacuum storage bag comprises a bag body, which is equipped with an extraction valve and a sealing zipper; the bag body is composed of an inner film layer and an outer film layer by glue laminating, a blocking layer is arranged on the surface of the inner film layer; and the outer film layer is made of cloth. The vacuum storage bag of the present invention is made of cloth and PE film. The cloth is soft and folding, thick and wear-resistant, not easy to be brittle, and has long service life. In addition, there are many types of cloth and PE film for preparing the vacuum storage bag prepared in this application, which can be selected according to needs, so that the vacuum storage bag prepared has a wider scope of application.

Claims

1. A vacuum storage bag, wherein the vacuum storage bag comprises a bag body, which is equipped with an extraction valve and a sealing zipper; the bag body is composed of an inner film layer and an outer film layer by glue laminating, a blocking layer is arranged on the surface of the inner film layer; and the outer film layer is made of cloth.

2. The vacuum storage bag according to claim 1, wherein the types of cloth include polyester, cotton and linen, non-woven fabrics and polyester cotton blended.

3. The vacuum storage bag according to claim 1, wherein the inner film layer is made of ordinary PE film, reinforced PE film, casting PE film or multi-layer co-extruded PE film.

4. The vacuum storage bag according to claim 1, wherein the glue used for gluing is water-based composite glue, hot melt glue, polyurethane glue or oil-based glue.

5. The vacuum storage bag according to claim 1, wherein the blocking layer is made from PVA emulsion or other emulsions with blocking effect.

6. A preparation method of the vacuum storage bag in any of claim 1, wherein the preparation method comprises the following steps: (a) performing corona treatment for the PE film, applying the water-based PVA emulsion on the surface of the PE film, and then drying in the drying tunnel to obtain the inner film layer; (b) solidifying and forming the cloth and the inner film layer by means of glue laminating; (c) printing pattern on the surface of cloth to obtain cloth plastic film; and (d) cutting on the cloth plastic film to install the extraction valve, and then using a bag making machine for sealing the edge, bottom and zipper to obtain the vacuum storage bag.

7. A preparation method of the vacuum storage bag in claim 2, wherein the preparation method comprises the following steps: (a) performing corona treatment for the PE film, applying the water-based PVA emulsion on the surface of the PE film, and then drying in the drying tunnel to obtain the inner film layer; (b) solidifying and forming the cloth and the inner film layer by means of glue laminating; (c) printing pattern on the surface of cloth to obtain cloth plastic film; and (d) cutting on the cloth plastic film to install the extraction valve, and then using a bag making machine for sealing the edge, bottom and zipper to obtain the vacuum storage bag.

8. A preparation method of the vacuum storage bag in claim 3, wherein the preparation method comprises the following steps: (a) performing corona treatment for the PE film, applying the water-based PVA emulsion on the surface of the PE film, and then drying in the drying tunnel to obtain the inner film layer; (b) solidifying and forming the cloth and the inner film layer by means of glue laminating; (c) printing pattern on the surface of cloth to obtain cloth plastic film; and (d) cutting on the cloth plastic film to install the extraction valve, and then using a bag making machine for sealing the edge, bottom and zipper to obtain the vacuum storage bag.

9. A preparation method of the vacuum storage bag in claim 4, wherein the preparation method comprises the following steps: (a) performing corona treatment for the PE film, applying the water-based PVA emulsion on the surface of the PE film, and then drying in the drying tunnel to obtain the inner film layer; (b) solidifying and forming the cloth and the inner film layer by means of glue laminating; (c) printing pattern on the surface of cloth to obtain cloth plastic film; and (d) cutting on the cloth plastic film to install the extraction valve, and then using a bag making machine for sealing the edge, bottom and zipper to obtain the vacuum storage bag.

10. A preparation method of the vacuum storage bag in claim 5, wherein the preparation method comprises the following steps: (a) performing corona treatment for the PE film, applying the water-based PVA emulsion on the surface of the PE film, and then drying in the drying tunnel to obtain the inner film layer; (b) solidifying and forming the cloth and the inner film layer by means of glue laminating; (c) printing pattern on the surface of cloth to obtain cloth plastic film; and (d) cutting on the cloth plastic film to install the extraction valve, and then using a bag making machine for sealing the edge, bottom and zipper to obtain the vacuum storage bag.

11. The preparation method according to claim 6, wherein in Step (a), the temperature of drying in the drying tunnel is 6090 C., the length of the drying tunnel is not less than 15 m, and the moving speed is 4050 m/min.

12. The preparation method according to claim 6, wherein in Step (b), the solidifying and forming temperature is 4560 C., and the time is 1236 h.

13. The preparation method according to claim 6, wherein in Step (b), when the glue used for gluing is hot melt glue, glue laminating for the cloth and the inner film layer specifically includes the following steps: melting the hot melt glue, and applying it on the surface of the cloth, and then laminating the post-corona inner film layer on the surface of the cloth; when the glue used for gluing is water-based composite glue or polyurethane glue, glue laminating for the cloth and the inner film layer specifically includes the following steps: applying the water-based composite glue or the polyurethane glue on the surface of the cloth, drying in the drying tunnel, and then laminating the post-corona inner film layer on the surface of the cloth.

14. The preparation method according to claim 6, wherein in Step (d), the temperature of the sealing hot knife of the bag making machine during the bottom and side sealing is 150180 C., and the temperature of the sealing hot knife of the bag making machine during the zipper sealing is 160190 C.

Description

DETAILED DESCRIPTION

[0030] The following is detailed description on the embodiment of the technical solution in the present invention by combining with the embodiment. The following embodiments are only used for more clearly describing the technical solution of the present invention. So, they are only taken as the examples, but cannot be for limiting the protection scope of the present invention.

[0031] It shall be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the usual meaning understood by technicians skilled in the field of the present invention.

[0032] The embodiment of the present invention provides a vacuum storage bag, wherein the vacuum storage bag comprises a bag body, which is equipped with an extraction valve and a sealing zipper; [0033] the bag body is composed of an inner film layer and an outer film layer by glue laminating, a blocking layer is arranged on the surface of the inner film layer; [0034] and the outer film layer is made of cloth.

[0035] The vacuum storage bag of the present invention is made of cloth and inner film layer. The cloth is more flexible, not easy to be brittle, and has long service life. In addition, a blocking layer is arranged on the surface of the inner film layer, which can block the air, realize vacuuming and achieve the purpose of vacuum storage.

[0036] In some embodiments, the types of cloth include polyester, cotton and linen, non-woven fabrics and polyester cotton blended. There are many types of cloth, which can be selected according to needs, so that the vacuum storage bag prepared has a wider scope of application.

[0037] In some embodiments, the inner film layer is made of ordinary PE film, reinforced PE film, casting PE film or multi-layer co-extruded PE film. There are many types of PE film, which can be selected according to needs, so that the vacuum storage bag prepared has a wider scope of application.

[0038] In some embodiments, the glue used for gluing is water-based composite glue, hot melt glue, polyurethane glue or oil-based glue. The vacuum storage bag of the present invention can be glued with multiple glues, and it is suitable for use on the equipment with multiple different performances. Meanwhile, it also adapts to the requirements of environment at different temperatures.

[0039] In Embodiment I, the blocking layer is made from PVA emulsion or other emulsions with blocking effect; it can play a role in blocking the gas from entering the bag body, and the permeability is 10 cc m2/24 h.

[0040] The embodiment of the present invention also provides a preparation method of the vacuum storage bag in the second aspect. The preparation method comprises the following steps: [0041] (a) performing corona treatment for the PE film, applying the water-based PVA emulsion on the surface of the PE film, and then drying in the drying tunnel to obtain the inner film layer; after the test, the permeability of the inner film layer obtained after applying the water-based PVA solution is within 10 cc m2/24 h, which is many times higher than that of nylon film 50 cc m2/24 h and PET film 120 cc m2/24 h. In addition, the length of the drying tunnel is not less than 15 m. As the high temperature resistance of the PE film is poor, the regular temperature of the drying channel is controlled at 6090 C., and the drying effect is achieved through the length of the drying channel. In addition, the PE film is not the stretched film, containing about 0.51.5 cm shrinkage, and due to low drying temperature, the linear production speed must be controlled at about 4050 meters/min; [0042] (b) solidifying and forming the cloth and inner film layer by means of glue laminating; after the cloth and the PE film are combined by glue, the glue needs to be activated and solidified by temperature, so that the two layers of materials are tightly bonded together; the regular temperature of the drying room is at 4560 C., and the curing time is 1236 h; [0043] (c) Printing pattern on the surface of the cloth to obtain cloth plastic film; making the product appearance more beautiful through printing, with selling points; and [0044] (d) cutting on the cloth plastic film to install the extraction valve, and then adjusting the width and length according to different sizes, and applying the oil to the sealing hot knife section of the bag making machine for sealing the edge, bottom and zipper to obtain the vacuum storage bag.

[0045] In some embodiments, in Step (b), when the glue used for gluing is hot melt glue, glue laminating for the cloth and the inner film layer specifically includes the following steps: [0046] melting the hot melt glue, and applying it on the surface of the cloth, and then laminating the post-corona inner film layer on the surface of the cloth; [0047] when the glue used for gluing is water-based composite glue or polyurethane glue, glue laminating for the cloth and the inner film layer specifically includes the following steps: [0048] applying the water-based composite glue or the polyurethane glue on the surface of the cloth, drying in the drying tunnel, and then laminating the post-corona inner film layer on the surface of the cloth.

[0049] In some embodiments, in Step (d), the temperature of the sealing hot knife of the bag making machine during the bottom and side sealing is 150180 C., and the temperature of the sealing hot knife of the bag making machine during the zipper sealing is 160190 C.

[0050] The following is detailed description for the technical solution of the present invention through specific embodiments.

Embodiment 1

[0051] This embodiment provides a vacuum storage bag, wherein the vacuum storage bag comprises a bag body, which is equipped with an extraction valve and a sealing zipper; [0052] the bag body is composed of an inner film layer and an outer film layer by glue laminating, a blocking layer is arranged on the surface of the inner film layer; [0053] the outer film layer is made of polyester cloth; [0054] the inner film layer is made of ordinary PE film; [0055] the glue used for gluing is hot melt glue; and [0056] the blocking layer is made from PVA emulsion.

Embodiment 2

[0057] This embodiment provides a vacuum storage bag, wherein the vacuum storage bag comprises a bag body, which is equipped with an extraction valve and a sealing zipper; [0058] the bag body is composed of an inner film layer and an outer film layer by glue laminating, a blocking layer is arranged on the surface of the inner film layer; [0059] the outer film layer is made of non-woven fabric; [0060] the inner film layer is made of reinforced PE film; [0061] the glue used for gluing is water-based composite glue; and [0062] the blocking layer is made from PVA emulsion.

Embodiment 3

[0063] This embodiment provides a vacuum storage bag, wherein the vacuum storage bag comprises a bag body, which is equipped with an extraction valve and a sealing zipper; [0064] the bag body is composed of an inner film layer and an outer film layer by glue laminating, a blocking layer is arranged on the surface of the inner film layer; [0065] the outer film layer is made of cotton and linen cloth; [0066] the inner film layer is made of multi-layer co-extruded PE film; [0067] the glue used for gluing is polyurethane glue; and [0068] the blocking layer is made from PVA emulsion.

Embodiment 4

[0069] This embodiment provides a preparation method of the vacuum storage bag in the second aspect. The preparation method comprises the following steps: [0070] (a) performing corona treatment for the PE film, applying the water-based PVA emulsion on the surface of the PE film, and then drying in the drying tunnel to obtain the inner film layer, wherein the temperature of drying in the drying tunnel is 7090 C., the length of the drying tunnel is not less than 15 m, and the moving speed is 50 m/min. [0071] (b) melting the hot melt glue, and applying it on the surface of the cloth, and then laminating the post-corona inner film layer on the surface of the cloth, wherein the solidifying and forming temperature is 45 C., and the time is 36 h; [0072] (c) printing pattern on the surface of cloth to obtain cloth plastic film; and [0073] (d) cutting on the cloth plastic film to install the extraction valve, and then using a bag making machine for sealing the edge, bottom and zipper to obtain the vacuum storage bag, wherein the temperature of the sealing hot knife of the bag making machine during the bottom and side sealing is 150 C., and the temperature of the sealing hot knife of the bag making machine during the zipper sealing is 160 C.

Embodiment 5

[0074] This embodiment provides a preparation method of the vacuum storage bag in the second aspect. The preparation method comprises the following steps: [0075] (a) performing corona treatment for the PE film, applying the water-based PVA emulsion on the surface of the PE film, and then drying in the drying tunnel to obtain the inner film layer, wherein the temperature of drying in the drying tunnel is 6080 C., the length of the drying tunnel is not less than 15 m, and the moving speed is 40 m/min. [0076] (b) melting the hot melt glue, and applying it on the surface of the cloth, and then laminating the post-corona inner film layer on the surface of the cloth, wherein the solidifying and forming temperature is 60 C., and the time is 12 h; [0077] (c) printing pattern on the surface of cloth to obtain cloth plastic film; and [0078] (d) cutting on the cloth plastic film to install the extraction valve, and then using a bag making machine for sealing the edge, bottom and zipper to obtain the vacuum storage bag, wherein the temperature of the sealing hot knife of the bag making machine during the bottom and side sealing is 180 C., and the temperature of the sealing hot knife of the bag making machine during the zipper sealing is 190 C.

Embodiment 6

[0079] This embodiment provides a preparation method of the vacuum storage bag in the second aspect. The preparation method comprises the following steps: [0080] (a) performing corona treatment for the PE film, applying the water-based PVA emulsion on the surface of the PE film, and then drying in the drying tunnel to obtain the inner film layer, wherein the temperature of drying in the drying tunnel is 7090 C., the length of the drying tunnel is not less than 15 m, and the moving speed is 50 m/min. [0081] (b) solidifying and forming the cloth and inner film layer by means of glue laminating, wherein applying the water-based composite glue or the polyurethane glue on the surface of the cloth, drying in the drying tunnel, and then laminating the post-corona inner film layer on the surface of the cloth, solidifying and forming, wherein the solidifying and forming temperature is 45 C., and the time is 36 h; [0082] (c) printing pattern on the surface of cloth to obtain cloth plastic film; and [0083] (d) cutting on the cloth plastic film to install the extraction valve, and then using a bag making machine for sealing the edge, bottom and zipper to obtain the vacuum storage bag, wherein the temperature of the sealing hot knife of the bag making machine during the bottom and side sealing is 160 C., and the temperature of the sealing hot knife of the bag making machine during the zipper sealing is 170 C.

Embodiment 7

[0084] This embodiment provides a preparation method of the vacuum storage bag in the second aspect. The preparation method comprises the following steps: [0085] (a) performing corona treatment for the PE film, applying the water-based PVA emulsion on the surface of the PE film, and then drying in the drying tunnel to obtain the inner film layer, wherein the temperature of drying in the drying tunnel is 6080 C., the length of the drying tunnel is not less than 15 m, and the moving speed is 40 m/min. [0086] (b) solidifying and forming the cloth and inner film layer by means of glue laminating, wherein applying the water-based composite glue or the polyurethane glue on the surface of the cloth, drying in the drying tunnel, and then laminating the post-corona inner film layer on the surface of the cloth, solidifying and forming, wherein the solidifying and forming temperature is 60 C., and the time is 12 h; [0087] (c) printing pattern on the surface of cloth to obtain cloth plastic film; and [0088] (d) cutting on the cloth plastic film to install the extraction valve, and then using a bag making machine for sealing the edge, bottom and zipper to obtain the vacuum storage bag, wherein the temperature of the sealing hot knife of the bag making machine during the bottom and side sealing is 170 C., and the temperature of the sealing hot knife of the bag making machine during the zipper sealing is 180 C.

[0089] The vacuum storage bag prepared by the embodiment of the present invention is made of cloth and PE film. The cloth is soft and folding, thick and wear-resistant, not easy to be brittle, and has long service life. In addition, there are many types of cloth and PE film for preparing the vacuum storage bag prepared in this application, which can be selected according to needs, so that the vacuum storage bag prepared has a wider scope of application.

[0090] Finally, it shall be noted that: the above embodiments are only used to describe the technical solution of the present invention and not to limit it. Although the present invention is described in detail by referring to the above-mentioned embodiments, ordinary technicians in this field shall understand that it may modify the technical solution recorded in each of the above-mentioned embodiments or replace some or all technical features equivalently. Such modifications or replacements shall not detract the essence of the corresponding technical solutions from the scope of the technical solutions in the embodiments of the present invention, which shall be covered by the scope of the Claims of the present invention.