Water-vapor-proof composite flexible packaging bag

By using CPP film, a waterproof layer, and a corona-treated layer in the composite flexible packaging bag, combined with a support bag and Velcro fasteners, the problem of material damage caused by moisture is solved, achieving both waterproof and easy-to-carry properties.

CN223778931UActive Publication Date: 2026-01-09GUANGDONG LIHONG PACKING CO LTD
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Patent Information

Application Number
CN202520389458.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-06
Publication Date
2026-01-09
Estimated Expiration
2035-03-06

AI Technical Summary

Technical Problem

Existing composite flexible packaging bags have a simple structure, and the single film layer makes it easy for moisture to accumulate inside, leading to damage to stored materials.

Method used

CPP film is used as the base film, with first and second waterproof layers on top and bottom, an additional corona treatment layer, support bag and connecting components to improve sealing and water vapor resistance, and fastening strips with Velcro for easy carrying and storage.

Benefits of technology

It effectively isolates moisture, improves sealing and waterproof performance, enhances connection stability, prevents material damage, and is easy to carry and store.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN223778931U_ABST
    Figure CN223778931U_ABST
Patent Text Reader

Abstract

The utility model discloses a moisture-proof composite flexible packaging bag, and relates to the technical field of composite flexible packaging bags, the moisture-proof composite flexible packaging bag comprises a first packaging bag main body, and the rear end of the first packaging bag main body is provided with a second packaging bag main body; supporting bags are arranged on the edges of the two sides and the lower surfaces of the first packaging bag body and the second packaging bag body correspondingly, a connecting assembly is arranged at the center of the lower end of each supporting bag, the first packaging bag body and the second packaging bag body each comprise a bottom film, and a first water-resisting layer is arranged at the upper end of each bottom film. A first water-resisting layer is arranged at the upper end of the bottom film, a second water-resisting layer is arranged at the lower end of the bottom film, a corona treatment layer is arranged on the upper surface of the first water-resisting layer, and the first water-resisting layer and the second water-resisting layer are both made of PET materials. And materials stored inside are easy to damage.
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Description

TECHNICAL FIELD

[0001] The utility model relates to composite soft packing bag technical field, concretely is a kind of waterproof composite soft packing bag. BACKGROUND

[0002] Composite soft packing bag is a kind of packing material combined by two or more than two materials through once or more dry composite process;

[0003] For example, the Chinese authorized patent (a water-based composite soft packing bag) with the announcement number CN201357993Y: it is made of composite packing sheet, and the composite packing sheet includes base layer and water-soluble layer compounded on it, and reinforcing layer compounded below base layer, the base layer is paper layer, and the reinforcing layer is polyethylene film. The new product is very suitable for directly packing food, and the use of paper layer as packing base layer can reduce the use of other materials, and can be well heat-sealed with PE, the water-soluble layer is used on the base layer of paper layer, without using organic solvent, without erosion to printed matter paper and ink, without wrinkling, losing viscosity and delaminating. There is no harmful gas volatilization pollution, meets the national environmental protection requirements, purifies production environment and protects personal health.

[0004] However, the existing composite soft packing bag has single structure, single film layer, water vapor is easily generated inside, and the internal stored material is easily damaged;Therefore, it does not meet the existing demand, and for this, we propose a waterproof composite soft packing bag. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of waterproof composite soft packing bag to solve the problems of the single structure of the existing composite soft packing bag, single film layer, water vapor is easily generated inside, and the internal stored material is easily damaged in the above background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of waterproof composite soft packing bag, comprising: first packing bag main body, the rear end of the first packing bag main body is provided with second packing bag main body, the edge of the two sides and lower surface of the first packing bag main body and second packing bag main body is all provided with support bag, and the lower end center of the support bag is provided with connecting assembly.

[0007] Preferably, the first packing bag main body and second packing bag main body include bottom film, and the bottom film uses CPP film, the upper end of the bottom film is provided with first water barrier layer, and the lower end of the bottom film is provided with second water barrier layer.

[0008] Preferably, the upper surface of the first water barrier layer is provided with corona treatment layer, and the first water barrier layer and second water barrier layer use PET material.

[0009] Preferably, the first and second bag bodies are connected by a sealing strip near the top end, and the first and second bag bodies are connected by the sealing strip.

[0010] Preferably, a hanging hole is arranged above the sealing strip, and the hanging hole penetrates the first and second bag bodies.

[0011] Preferably, the connecting assembly comprises a connecting strip, and a top seat is arranged at the top end of the connecting strip, and the top seat is fixed to the supporting bag by heat melting.

[0012] Preferably, the connecting assembly further comprises a first magic tape round hair, and the first magic tape round hair is arranged on one side surface of the connecting strip, a second magic tape round hair is arranged on the other side surface of the connecting strip, one end of the first magic tape round hair is provided with a magic tape thorn, and the magic tape thorn is not connected with the first magic tape round hair.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] (1) The first and second bag bodies are wrapped by the first and second water barriers, and the water barrier effect is achieved, the sealing property is improved, and the printing property of the surfaces of the first and second bag bodies is improved by arranging the corona treatment layer. Since the bottom film is made of CPP, the water vapor effect is achieved, the overall water vapor property is improved, the edges of the two sides and the lower surface of the first and second bag bodies are tightly pressed and supported by the supporting bags, water leakage and damage are avoided, and the problems of single structure, single film layer, easy generation of water vapor in the inside, and easy damage of the stored materials in the inside of the existing composite soft packaging bag are solved.

[0015] (2) The connecting assembly is arranged at the lower end of the supporting bag, the first and second bag bodies are wound, the connecting strip is upwardly wrapped, the magic tape thorn is fixed to the second magic tape round hair, the whole is fixed by winding, is convenient to carry and store, is convenient to fix after the materials are loaded, is not easy to loosen, and the magic tape thorn is fixed to the first magic tape round hair during normal use, so that the connecting strip is prevented from falling off. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the utility model;

[0017] Figure 2 It is a first bag body structure schematic view of the utility model;

[0018] Figure 3 It is a connecting assembly front view structure schematic view of the utility model;

[0019] Figure 4The utility model discloses a connecting assembly rear view structure schematic diagram shows,

[0020] In the drawing: 1, first packing bag main part, 2, support bag, 3, sealing strip, 4, hanging hole, 5, connecting assembly, 6, first waterproof layer, 7, corona treatment layer, 8, bottom film, 9, connecting strip, 10, top seat, 11, first magic paste round hair, 12, magic paste thorn hair, 13, second magic paste round hair, 14, second waterproof layer, 15, second packing bag main part. Specific embodiments

[0021] The technical scheme in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0022] Please refer to Figures 1-4 The utility model provides an embodiment: a kind of waterproof composite soft packing bag, comprising: first packing bag main part 1, the rear end of first packing bag main part 1 is provided with second packing bag main part 15, the edge of both sides and lower surface of first packing bag main part 1 and second packing bag main part 15 is provided with support bag 2, the lower end center of support bag 2 is provided with connecting assembly 5, first packing bag main part 1 and second packing bag main part 15 all include bottom film 8, and bottom film 8 uses CPP film, the upper end of bottom film 8 is provided with first waterproof layer 6, the lower end of bottom film 8 is provided with second waterproof layer 14, the upper surface of first waterproof layer 6 is provided with corona treatment layer 7, first waterproof layer 6 and second waterproof layer 14 all use PET material, the connecting place of first packing bag main part 1 and second packing bag main part 15 close to top end is provided with sealing strip 3, and first packing bag main part 1 and second packing bag main part 15 are connected by sealing strip 3, first waterproof layer 6 and second waterproof layer 14 are wrapped to bottom film 8, play water-proof effect, improve sealing property, and in the surface of first waterproof layer 6 by setting corona treatment layer 7, improve the printing performance of the surface of first packing bag main part 1 and second packing bag main part 15, the edge of both sides and lower surface of first packing bag main part 1 and second packing bag main part 15 is all compacted and supported by support bag 2, avoid water leakage and damage, improve the stability and service life of the connecting place of first packing bag main part 1 and second packing bag main part 15, since bottom film 8 uses CPP, has waterproof vapor effect, improve the waterproof vapor performance of whole, first packing bag main part 1 and second packing bag main part 15 are connected by sealing strip 3.

[0023] Please refer to Figure 1 The upper of sealing strip 3 is provided with hanging hole 4, and hanging hole 4 penetrates first packing bag main part 1 and second packing bag main part 15, is hung by hanging hole 4, hanging hole 4 has a plurality of, is convenient for hanging at different positions, improve flexibility.

[0024] Please refer to Figure 1 、 3 , 4, the connecting assembly 5 comprises a connecting strip 9, the top end of the connecting strip 9 is provided with a top seat 10, and the top seat 10 is fixed by hot melting with the supporting bag 2, the connecting assembly 5 further comprises first magic tape round hair 11, and the first magic tape round hair 11 is located on one side surface of the connecting strip 9, the other side surface of the connecting strip 9 is provided with second magic tape round hair 13, one end of the first magic tape round hair 11 is provided with magic tape barbs 12, and the magic tape barbs 12 are not connected with the first magic tape round hair 11, by winding the first packaging bag body 1 and the second packaging bag body 15, the connecting strip 9 is wrapped upwards, the magic tape barbs 12 are fixed with the second magic tape round hair 13, the whole winding and fixing are realized, carrying and storage are facilitated, and it is also convenient to fix after loading materials, and it is not easy to loosen, in normal use, the magic tape barbs 12 are connected with the first magic tape round hair 11, and the connecting strip 9 is prevented from scattering.

[0025] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but rather can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being indicated by the appended claims rather than that of the above description, and it is intended to embrace all changes and modifications that fall within the meaning and scope of equivalents of the claims. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A waterproof vapor-proof composite flexible pouch having a first pouch body (1), characterized by: The rear end of the first packaging bag body (1) is provided with a second packaging bag body (15), the edges of the two sides and the lower surface of the first packaging bag body (1) and the second packaging bag body (15) are provided with support bags (2), and the lower end center of the support bag (2) is provided with a connecting assembly (5).

2. A composite soft pouch with water vapor barrier according to claim 1, characterized in that: The first packaging bag body (1) and the second packaging bag body (15) both comprise a bottom film (8), the bottom film (8) is a CPP film, the upper end of the bottom film (8) is provided with a first waterproof layer (6), and the lower end of the bottom film (8) is provided with a second waterproof layer (14).

3. A composite soft pouch with water vapor barrier according to claim 2, wherein: The upper surface of the first waterproof layer (6) is provided with a corona treatment layer (7), and the first waterproof layer (6) and the second waterproof layer (14) are both made of PET material.

4. The moisture-proof composite flexible pouch according to claim 1, wherein: The connecting part near the top end of the first packaging bag body (1) and the second packaging bag body (15) is provided with a sealing strip (3), and the first packaging bag body (1) and the second packaging bag body (15) are sealingly connected through the sealing strip (3).

5. A moisture-proof composite flexible pouch according to claim 4, wherein: The upper side of the sealing strip (3) is provided with a hanging hole (4), and the hanging hole (4) penetrates the first packaging bag body (1) and the second packaging bag body (15).

6. The moisture-proof composite flexible pouch according to claim 1, wherein: The connecting assembly (5) comprises a connecting strip (9), the top end of the connecting strip (9) is provided with a top seat (10), and the top seat (10) is hot melt fixed with the support bag (2).

7. The moisture-proof composite flexible pouch according to claim 1, wherein: The connecting assembly (5) further comprises a first magic tape round hair (11), and the first magic tape round hair (11) is located on one side surface of the connecting strip (9), the other side surface of the connecting strip (9) is provided with a second magic tape round hair (13), one end of the first magic tape round hair (11) is provided with a magic tape thorn hair (12), and the magic tape thorn hair (12) is not connected with the first magic tape round hair (11).

Citation Information

Patent Citations

  • Aqueous composite flexible pouch

    CN201357993Y