Damp-proof environment-friendly packaging bag

Abstract

The utility model discloses a damp-proof environment-friendly packaging bag which comprises a bag body and a handle. The bag body is provided with a containing cavity with an upward opening, and the handle is arranged at the top of the bag body; the bag body comprises an inner tensile layer, a damp-proof layer, an anti-puncture layer and an outer tensile layer, and the damp-proof layer is attached and fixed to the outer side face of the inner tensile layer; the bag body is designed to comprise the inner stretch-resistant layer, the damp-proof layer, the anti-puncture layer and the outer stretch-resistant layer, so that the product has good stretch-resistant, damp-proof and anti-puncture characteristics, the service life of the product is effectively prolonged, meanwhile, the inner film layer is attached and fixed to the inner wall of the containing cavity in a matched mode, the containing cavity is formed between the inner film layer and the inner stretch-resistant layer, and the bag body can be conveniently stored and taken out. The drying agent is arranged in the containing cavity, so that the drying agent and the product are combined into a whole and cannot be separated, the drying agent cannot be mixed with food, a user is effectively prevented from eating the food by mistake, potential safety hazards are eradicated, and convenience is brought to use.

Description

Technical Field

[0001] The utility model relates to the field of packaging bags, in particular to a moisture-proof and environment-friendly packaging bag. Background Art

[0002] Plastic packaging bags are made of plastic and used to produce a variety of daily necessities. They are widely used in daily life and industrial production, but this temporary convenience brings long-term harm. Commonly used plastic packaging bags are mostly made of polyethylene film, which is non-toxic and can be used to hold food. Another type of film is made of polyvinyl chloride. PVC itself is also non-toxic, but the additives added to the film depending on its use are often harmful to the human body and have a certain degree of toxicity. Therefore, this type of film and the plastic bags made from it are not suitable for holding food. By the end of 2025, the use of non-degradable plastic packaging bags, plastic tape, disposable plastic woven bags, etc. will be banned in postal and express delivery outlets nationwide. Plastic packaging bags can be categorized by material, including OPP, CPP, PP, PE, PVA, EVA, composite bags, and co-extruded bags.

[0003] Food packaging bags are the most common type of plastic packaging bags and are primarily used for food packaging. With the rapid development of the economy and the continuous improvement of living standards, my country's food industry has grown rapidly. People's lifestyles and consumption patterns are undergoing significant changes, and packaging is becoming increasingly important in their lives. This has led to new requirements for food packaging. Competition in the food market in this century largely depends on packaging quality.

[0004] Existing food packaging bags primarily consist of a bag body and a handle. The bag body has an upward-opening container for holding food, and the handle is located at the top of the bag body. However, existing bags are constructed of a single-layer plastic material, which has relatively weak stretch resistance, moisture resistance, and puncture resistance, resulting in a short service life. To achieve moisture resistance, desiccant is often placed directly in the container and mixed with the food, which can easily lead to accidental ingestion by the user, posing a significant safety hazard. Therefore, improvements to existing food packaging bags are necessary. Utility Model Content

[0005] In view of this, the present invention addresses the deficiencies in the prior art and its main purpose is to provide a moisture-proof and environmentally friendly packaging bag that can effectively solve the problems of existing food packaging bags having relatively weak tensile strength, moisture resistance and puncture resistance, as well as the problem that the desiccant is easily accidentally ingested during use.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A moisture-proof and environmentally friendly packaging bag comprises a bag body and a handle; the bag body has a accommodating cavity with an upward opening, and the handle is arranged on the top of the bag body; the bag body comprises an inner stretch-resistant layer, a moisture-proof layer, a puncture-proof layer and an outer stretch-resistant layer, the moisture-proof layer is adhered and fixed to the outer side of the inner stretch-resistant layer, the puncture-proof layer is adhered and fixed to the outer side of the moisture-proof layer, and the outer stretch-resistant layer is adhered and fixed to the outer side of the puncture-proof layer; and an inner film layer is adhered and fixed to the inner wall of the accommodating cavity, a storage cavity is formed between the inner film layer and the inner stretch-resistant layer, a desiccant is arranged in the storage cavity, and a plurality of micropores are opened on the inner film layer, and the plurality of micropores are connected between the storage cavity and the accommodating cavity.

[0008] As a preferred solution, an inner film layer is provided in the middle of the inner bottom wall of the accommodating cavity and the middle of the two inner side walls. Each inner film layer and the inner anti-stretching layer form the aforementioned storage cavity. The aforementioned desiccant is provided in each storage cavity to better absorb the water vapor in the accommodating cavity and achieve better moisture-proof effect.

[0009] As a preferred solution, the inner film layer and the inner anti-stretching layer are fixed by hot-melt connection, which has a simple structure, is easy to manufacture, and prevents the desiccant from falling out.

[0010] As a preferred solution, the desiccant is made of color-changing silica gel, and the bag body is made of a transparent material. Through the bag body, it can be seen whether the desiccant has changed color due to moisture, which is convenient for users to intuitively judge.

[0011] As a preferred solution, the inner and outer anti-stretching layers are both made of high-density polyethylene, polypropylene, linear low-density polyethylene, nylon, or polyester, which have excellent anti-stretching properties, can bear greater weight, and have a longer service life.

[0012] As a preferred solution, the puncture-proof layer is made of polyvinylidene chloride, co-extruded polyethylene or ethylene-vinyl alcohol copolymer, which has a good puncture-proof effect and better protects the food contained in the accommodating cavity.

[0013] As a preferred solution, a first sealing strip is bonded and fixed to one side of the opening of the accommodating cavity, and a second sealing strip is bonded and fixed to the other side of the opening of the accommodating cavity. The second sealing strip and the first sealing strip are detachably sealed to seal the opening of the accommodating cavity, making it easy to re-seal after opening.

[0014] As a preferred solution, a dovetail groove is concavely provided on the inner side of the first sealing strip, and a dovetail block is convexly provided on the inner side of the second sealing strip. The dovetail block and the dovetail groove are clamped and sealed, with a simple structure, easy assembly and disassembly, and a stable connection.

[0015] As a preferred solution, a tearable film is hot-melt connected to the opening of the accommodating cavity, which seals the opening of the accommodating cavity and is located above the first sealing strip and the second sealing strip to facilitate judgment of whether the packaging bag has been opened.

[0016] As a preferred solution, the handle is made of high-density polyethylene, polypropylene, linear low-density polyethylene, nylon or polyester. The handle is welded and fixed to the top of the bag body, has a simple structure and is easy to manufacture.

[0017] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0018] By designing the bag body to include an inner anti-stretch layer, a moisture-proof layer, an anti-puncture layer and an outer anti-stretch layer, the product has excellent anti-stretch, moisture-proof and anti-puncture properties, effectively extending the service life of the product. At the same time, an inner film layer is adhered and fixed to the inner wall of the accommodating cavity, and a storage cavity is formed between the inner film layer and the inner anti-stretch layer. The desiccant is arranged in the storage cavity, so that the desiccant is combined with the product to form an inseparable whole. The desiccant will not be mixed with food, effectively preventing users from accidentally ingesting it, eliminating safety hazards, and bringing convenience to use.

[0019] In order to more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view of a preferred embodiment of the present utility model;

[0021] Figure 2 It is a cross-sectional view of the preferred embodiment of the present invention in the open state.

[0022] Description of the accompanying drawings:

[0023] 10. Bag body 11. Inner anti-stretch layer

[0024] 12. Moisture-proof layer 13. Anti-puncture layer

[0025] 14. Outer tensile layer 15. Inner membrane layer

[0026] 16. Easy-to-tear film 101, accommodating cavity

[0027] 102, storage cavity 103, micropore

[0028] 20. Handle 21. Handle hole

[0029] 30, desiccant 40, first sealing strip

[0030] 41. Dovetail groove 50. Second sealing strip

[0031] 51. Dovetail block. DETAILED DESCRIPTION

[0032] Please refer to Figures 1 to 2 As shown, it shows the specific structure of a preferred embodiment of the present utility model, including a bag body 10 and a handle 20.

[0033] The bag body 10 has a accommodating cavity 101 with an upward opening, and the bag body 10 includes an inner anti-stretching layer 11, a moisture-proof layer 12, a puncture-proof layer 13 and an outer anti-stretching layer 14; the moisture-proof layer 12 is adhered and fixed to the outer surface of the inner anti-stretching layer 11, the puncture-proof layer 13 is adhered and fixed to the outer surface of the moisture-proof layer 12, and the outer anti-stretching layer 14 is adhered and fixed to the outer surface of the puncture-proof layer 13; and an inner film layer 15 is adhered and fixed to the inner wall of the accommodating cavity 101, and a storage cavity 102 is formed between the inner film layer 15 and the inner anti-stretching layer 11, and a desiccant 30 is arranged in the storage cavity 102, and a plurality of micropores 103 are opened on the inner film layer 15, and the plurality of micropores 103 are connected between the storage cavity 102 and the accommodating cavity 101.

[0034] In this embodiment, the inner stretch-resistant layer 11, moisture-proof layer 12, puncture-resistant layer 13, and outer stretch-resistant layer 14 are all made of biodegradable plastic materials, which are very environmentally friendly. Specifically, the inner stretch-resistant layer 11 and the outer stretch-resistant layer 14 are made of high-density polyethylene, polypropylene, linear low-density polyethylene, nylon, or polyester, which have excellent stretch resistance, can withstand greater weight, and have a longer service life. The moisture-proof layer 12 is a polyethylene moisture-proof film with excellent moisture-proof properties. The puncture-resistant layer 13 is made of polyvinylidene chloride, co-extruded polyethylene, or ethylene-vinyl alcohol copolymer, which has excellent puncture resistance and better protects the food stored in the accommodating cavity 101.

[0035] In addition, an inner film layer 15 is provided in the middle of the inner bottom wall and the middle of the two inner side walls of the accommodating chamber 101. Each inner film layer 15 and the inner tensile strength layer 11 form the aforementioned storage chamber 102. Each storage chamber 102 is provided with the aforementioned desiccant 30 to better absorb the water vapor in the accommodating chamber 101 and achieve a better moisture-proof effect. In addition, the inner film layer 15 and the inner tensile strength layer 11 are fixed by hot melt connection, which has a simple structure and is easy to manufacture, preventing the desiccant 30 from falling out. The desiccant 30 is made of color-changing silica gel. The bag body 10 is made of a transparent material as a whole. It can be seen through the bag body 10 whether the desiccant 30 has changed color due to moisture, which is convenient for the user to intuitively judge. The inner film layer 15 is made of a biodegradable plastic material and is very environmentally friendly.

[0036] In addition, a first sealing strip 40 is bonded and fixed to one side of the opening of the accommodating chamber 101, and a second sealing strip 50 is bonded and fixed to the other side of the opening of the accommodating chamber 101. The second sealing strip 50 and the first sealing strip 40 are detachably sealed and matched to seal the opening of the accommodating chamber 101, so as to facilitate resealing after unsealing. The inner side of the first sealing strip 40 is concavely provided with a dovetail groove 41, and the inner side of the second sealing strip 50 is convexly provided with a dovetail block 51. The dovetail block 51 and the dovetail groove 41 are clamped and sealed, with a simple structure, easy assembly and disassembly, and a stable connection. In addition, a tear film 16 is hot-melt-connected at the opening of the accommodating chamber 101. The tear film 16 seals the opening of the accommodating chamber 101, and the tear film 16 is located above the first sealing strip 40 and the second sealing strip 50, so as to facilitate determining whether the packaging bag has been opened. The tear film 16 is made of a degradable plastic material and is very environmentally friendly.

[0037] The handle 20 is mounted on the top of the bag body 10. In this embodiment, the handle 20 is made of a biodegradable plastic material, making it environmentally friendly. Specifically, the handle 20 is made of high-density polyethylene, polypropylene, linear low-density polyethylene, nylon, or polyester. The handle 20 is welded to the top of the bag body 10, resulting in a simple structure and easy manufacture. The handles 20 are symmetrically arranged, each with a handle hole 21 for easy carrying.

[0038] The method of using this embodiment is described in detail as follows:

[0039] When packaging food, the second sealing strip 50 is separated from the first sealing strip 40, and then the food is placed in the accommodating cavity 101. Then, the second sealing strip 50 is sealed and connected with the first sealing strip 40, and then the easy-tear film 16 is hot-melt fixed to the opening in the accommodating cavity 101 to seal the accommodating cavity 101. When in use, the easy-tear film 16 is torn off, and then the second sealing strip 50 is separated from the first sealing strip 40. Then, the food can be taken out of the accommodating cavity 101. After the food is taken out, the second sealing strip 50 is sealed and connected with the first sealing strip 40. Under the cooperation of the moisture-proof layer 12 and the desiccant 30, the food in the accommodating cavity 101 can be kept dry for a long time, effectively preventing the food from getting damp and moldy.

[0040] The design focus of the present invention is that by designing the bag body to include an inner anti-stretching layer, a moisture-proof layer, an anti-puncture layer and an outer anti-stretching layer, the product has excellent anti-stretching, moisture-proof and anti-puncture properties, effectively extending the service life of the product. At the same time, an inner film layer is adhered and fixed to the inner wall of the accommodating cavity, and a storage cavity is formed between the inner film layer and the inner anti-stretching layer. The desiccant is arranged in the storage cavity, so that the desiccant is integrated with the product and cannot be separated. The desiccant will not be mixed with food, effectively preventing users from accidentally ingesting it, eliminating safety hazards, and bringing convenience to use.

[0041] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A moisture-proof and environmentally friendly packaging bag, comprising a bag body and a handle; the bag body having a receiving cavity with an upward opening, and the handle disposed on the top of the bag body; characterized in that: The bag body includes an inner stretch-resistant layer, a moisture-proof layer, a puncture-proof layer and an outer stretch-resistant layer. The moisture-proof layer is adhered and fixed to the outer side of the inner stretch-resistant layer, the puncture-proof layer is adhered and fixed to the outer side of the moisture-proof layer, and the outer stretch-resistant layer is adhered and fixed to the outer side of the puncture-proof layer. An inner film layer is adhered and fixed to the inner wall of the accommodating cavity. A storage cavity is formed between the inner film layer and the inner stretch-resistant layer. A desiccant is arranged in the storage cavity, and a plurality of micropores are opened on the inner film layer. The plurality of micropores are connected between the storage cavity and the accommodating cavity.

2. The moisture-proof and environmentally friendly packaging bag according to claim 1, characterized in that: The middle of the inner bottom wall and the middle of the two inner side walls of the accommodating cavity are both provided with an inner film layer, each inner film layer and the inner anti-stretching layer form the aforementioned storage cavity, and the aforementioned desiccant is provided in each storage cavity.

3. The moisture-proof and environmentally friendly packaging bag according to claim 1, characterized in that: The inner film layer is fixedly connected with the inner anti-stretching layer by heat melting.

4. The moisture-proof and environmentally friendly packaging bag according to claim 1, characterized in that: The desiccant is made of color-changing silica gel, and the bag body is made of transparent material as a whole.

5. The moisture-proof and environmentally friendly packaging bag according to claim 1, characterized in that: The inner anti-stretching layer and the outer anti-stretching layer are both made of high-density polyethylene, polypropylene, linear low-density polyethylene, nylon or polyester.

6. The moisture-proof and environmentally friendly packaging bag according to claim 1, characterized in that: The puncture-proof layer is polyvinylidene chloride, co-extruded polyethylene or ethylene-vinyl alcohol copolymer.

7. The moisture-proof and environmentally friendly packaging bag according to claim 1, characterized in that: A first sealing strip is bonded and fixed to one side of the opening of the accommodating cavity, and a second sealing strip is bonded and fixed to the other side of the opening of the accommodating cavity. The second sealing strip and the first sealing strip are detachably sealed to seal the opening of the accommodating cavity.

8. The moisture-proof and environmentally friendly packaging bag according to claim 7, characterized in that: A dovetail groove is concavely provided on the inner side of the first sealing strip, and a dovetail block is convexly provided on the inner side of the second sealing strip. The dovetail block is clamped and sealed in the dovetail groove.

9. The moisture-proof and environmentally friendly packaging bag according to claim 1, characterized in that: The opening of the accommodating cavity is connected to an easy-tear film by hot-melt connection. The easy-tear film seals the opening of the accommodating cavity, and the easy-tear film is located above the first sealing strip and the second sealing strip.

10. The moisture-proof and environmentally friendly packaging bag according to claim 1, characterized in that: The handle is made of high-density polyethylene, polypropylene, linear low-density polyethylene, nylon or polyester, and is welded and fixed to the top of the bag body.

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