Moisture-proof composite food packaging bag

Abstract

The utility model discloses a damp-proof composite food packaging bag which comprises a main bag body and a handle. The main bag body is provided with a storage cavity which is provided with an upward opening and is used for storing food; the main bag body comprises an inner layer and an outer layer; the inner layer comprises an anti-tensile layer, a waterproof layer and an anti-puncture layer; the outer layer is of a PET / PET / CPP three-layer composite structure, and the outer layer completely covers the outer surface of the inner layer; the inner layer is designed to comprise the stretch-resistant layer, the waterproof layer and the anti-puncture layer, so that the product has good stretch-resistant, waterproof and anti-puncture characteristics, the service life of the product is effectively prolonged, meanwhile, the outer layer is of a PET / PET / CPP three-layer composite structure, the product has the advantages of moisture resistance, high temperature resistance, easy sealing performance and better use performance, and the service life of the product is prolonged. Due to the fact that the front bag body and the rear bag body are arranged on the front side and the rear side of the main bag body respectively, the front bag body and the rear bag body can be used for containing disinfection wet tissues and dry tissues respectively, functions are diversified, and more convenience can be provided for people in the food enjoying process.

Description

Technical Field

[0001] The utility model relates to the field of packaging bags, in particular to a moisture-proof composite food 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 storage cavity, and the handle is located at the top of the bag body. However, these bags are single-layer plastic, which has poor stretch resistance, waterproofness, and puncture resistance, resulting in a short lifespan and limited functionality, making them inconvenient to use. Therefore, improvements are needed to improve existing food packaging bags. Utility Model Content

[0005] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide a moisture-proof composite food packaging bag, which can effectively solve the problems of short service life and single function of the existing food packaging bags.

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

[0007] A moisture-proof composite food packaging bag comprises a main bag body and a handle; the main bag body has a storage cavity with an upward opening for storing food; the handle is arranged on the top of the main bag body; the main bag body comprises an inner layer and an outer layer; the inner layer comprises an anti-stretching layer, a waterproof layer and an anti-puncture layer, the waterproof layer is adhered and fixed to the outer side of the anti-stretching layer, and the puncture-proof layer is adhered and fixed to the outer side of the waterproof layer; the outer layer is a PET / PET / CPP three-layer composite structure, and the outer layer completely covers the outer surface of the inner layer; and the front and back sides of the main bag body are respectively provided with a front bag body and a rear bag body, the front bag body and the front side of the main bag body are surrounded to form a front accommodating cavity with an upward opening, and the front accommodating cavity is provided with disinfectant wet wipes, and the rear bag body and the rear side of the main bag body are surrounded to form a rear accommodating cavity with an upward opening, and the rear accommodating cavity is provided with dry paper towels.

[0008] As a preferred solution, the anti-stretching layer is made of high-density polyethylene, polypropylene, linear low-density polyethylene, nylon or polyester, which has good anti-stretching properties.

[0009] As a preferred solution, the waterproof layer is a BOPP / VMCPP double-layer composite structure, which has the characteristics of moisture-proof, oil-resistant, oxygen-isolating, and light-shielding, and meets the packaging requirements of dry food.

[0010] As a preferred solution, the puncture-proof layer is made of polyvinylidene chloride, co-extruded polyethylene or ethylene-vinyl alcohol copolymer, which has good puncture-proof properties.

[0011] As a preferred solution, a first sealing strip is bonded and fixed to one side of the opening of the storage cavity, and a second sealing strip is bonded and fixed to the other side of the opening of the storage cavity. The second sealing strip and the first sealing strip are detachably sealed to seal the opening of the storage cavity, making it easy to re-seal after opening.

[0012] 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.

[0013] As a preferred solution, the handle includes two tensile-resistant film strips, which are respectively located above the first sealing strip and the second sealing strip. The two ends of the two tensile-resistant film strips are separately arranged on the left and right and are hot-melt connected and fixed to the main bag body. The structure is simple and easy to manufacture.

[0014] As a preferred solution, the front bag body is a film, and the bottom edge and left and right sides of the front bag body are hot-melt fixed to the main bag body. A front removable glue is provided at the opening of the front accommodating cavity. The front removable glue is bonded between the front bag body and the main bag body to seal the opening of the front accommodating cavity. The structure is simple and easy to use.

[0015] As a preferred solution, the rear bag body is a film, and the bottom edge and left and right sides of the rear bag body are hot-melt fixed to the main bag body. A rear removable glue is provided at the opening of the rear accommodating cavity. The rear removable glue is bonded between the rear bag body and the main bag body to seal the opening of the rear accommodating cavity. The structure is simple and easy to use.

[0016] 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:

[0017] By designing the inner layer to include an anti-stretching layer, a waterproof layer and an anti-puncture layer, this product has excellent anti-stretching, waterproof and puncture-proof properties, effectively extending the service life of the product. At the same time, the outer layer is a three-layer composite structure of PET / PET / CPP, which is moisture-proof, high-temperature resistant and easy to seal, and has better performance. In addition, by arranging a front bag body and a rear bag body on the front and back sides of the main bag body respectively, the front bag body and the rear bag body can be used to store disinfectant wipes and dry paper towels respectively, which has diverse functions and can provide more convenience for people in the process of enjoying food.

[0018] 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

[0019] Figure 1 This is a front view of a preferred embodiment of the present utility model;

[0020] Figure 2 It is a cross-sectional view of a preferred embodiment of the present utility model.

[0021] Description of the accompanying drawings:

[0022] 10. Main bag body 11. Inner layer

[0023] 111. Anti-stretching layer 112. Waterproof layer

[0024] 113, puncture-proof layer 12, outer layer

[0025] 101, storage cavity 20, handle

[0026] 21. Anti-tensile film tape 30. First sealing strip

[0027] 31. Dovetail groove 40. Second sealing strip

[0028] 41. Dovetail block 50. Front bag body

[0029] 51. Front accommodating cavity 52. ​​Front removable glue

[0030] 60. Rear bag body 61. Rear accommodating cavity

[0031] 62. Removable adhesive 71. Disinfectant wipes

[0032] 72. Dry paper towels. DETAILED DESCRIPTION

[0033] 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 main bag body 10 and a handle 20.

[0034] The main bag body 10 has a storage cavity 101 with an upward opening for storing food; the main bag body 10 includes an inner layer 11 and an outer layer 12; the inner layer 11 includes an anti-stretch layer 111, a waterproof layer 112 and an anti-puncture layer 113; the anti-stretch layer 111 can effectively enhance the overall anti-stretch properties of the main bag body 10; the waterproof layer 112 is adhered and fixed to the outer side of the anti-stretch layer 111, and the waterproof layer 112 can play a waterproof role; the puncture-proof layer 113 is adhered and fixed to the outer side of the waterproof layer 112, and the puncture-proof layer 113 is used to enhance the overall anti-puncture properties of the main bag body 10 to better protect the food in the storage cavity 101; the outer layer 12 is a three-layer composite structure of PET / PET / CPP, and the outer layer 12 completely covers the outer surface of the inner layer. The outer layer 12 has the characteristics of moisture-proof, high temperature resistance, and easy sealing, providing the main protection for the inner layer 11. In this embodiment, the stretch-resistant layer 111 is made of, but is not limited to, high-density polyethylene, polypropylene, linear low-density polyethylene, nylon, or polyester, all of which exhibit excellent stretch resistance. The waterproof layer 112 is a BOPP / VMCPP double-layer composite structure, offering moisture-proof, oil-resistant, oxygen-barrier, and light-shielding properties, meeting the packaging requirements for dry foods. The puncture-resistant layer 113 is made of, but is not limited to, polyvinylidene chloride, co-extruded polyethylene, or ethylene-vinyl alcohol copolymer, all of which exhibit excellent puncture-resistant properties.

[0035] Furthermore, a first sealing strip 30 is bonded and fixed to one side of the opening of the storage cavity 101, and a second sealing strip 40 is bonded and fixed to the other side of the opening of the storage cavity 101. The second sealing strip 40 and the first sealing strip 30 are removably sealed to seal the opening of the storage cavity 101, facilitating resealing after opening. In this embodiment, a dovetail groove 31 is concavely provided on the inner side of the first sealing strip 30, and a dovetail block 41 is convexly provided on the inner side of the second sealing strip 40. The dovetail block 41 and the dovetail groove 31 are engaged and sealed, resulting in a simple structure, easy assembly and disassembly, and a stable connection.

[0036] The handle 20 is provided at the top of the main bag body 10. In this embodiment, the handle 20 includes two tensile-resistant adhesive film strips 21, which are respectively located above the first sealing strip 30 and the second sealing strip 40. The ends of the two tensile-resistant adhesive film strips 21 are separately provided on the left and right sides and are fixed to the main bag body 10 by hot melt, resulting in a simple structure and easy production.

[0037] In addition, the front and rear sides of the main bag body 10 are respectively provided with a front bag body 50 and a rear bag body 60. The front bag body 50 and the front side of the main bag body 10 form a front accommodating chamber 51 with an upward opening. The front accommodating chamber 51 is provided with a disinfectant wet wipe 71, which can be used for hand cleaning and disinfection before enjoying food. The rear bag body 60 and the rear side of the main bag body 10 form a rear accommodating chamber 61 with an upward opening. The rear accommodating chamber 61 is provided with a dry paper towel 72, which is used for wiping the mouth after enjoying food. In this embodiment, the front bag body 50 is a transparent film. The bottom edge and left and right sides of the front bag body 50 are hot-melt-connected to the main bag body 10. The opening of the front accommodating chamber 51 is provided with a front removable adhesive 52, which is bonded between the front bag body 50 and the main bag body 10 to seal the opening of the front accommodating chamber 51. In addition, the rear bag body 60 is a film made of transparent material. The bottom edge and left and right sides of the rear bag body 60 are hot-melt fixed to the main bag body 10. A rear removable glue 62 is provided at the opening of the rear accommodating cavity 61. The rear removable glue 62 is bonded between the rear bag body 60 and the main bag body 10 to seal the opening of the rear accommodating cavity 61.

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

[0039] During packaging, food is placed in the storage cavity 101, and then the second sealing strip 40 and the first sealing strip 30 are sealed together, and then the two tensile film strips 21 are tied together. When the user needs to enjoy the food, the two tensile film strips 21 are untied, and then the second sealing strip 40 is separated from the first sealing strip 30. Then, the disinfectant wipes 71 are taken out from the front receiving cavity 51 and used to clean and disinfect the hands. The food can then be taken out of the storage cavity 101 by hand and eaten. When the food is finished, the dry paper towel 72 is taken out from the rear receiving cavity 61 to wipe the mouth. It is very convenient to use.

[0040] The design focus of the present invention is that by designing the inner layer to include an anti-stretching layer, a waterproof layer and an anti-puncture layer, the product has excellent anti-stretching, waterproof and anti-puncture properties, which effectively extends the service life of the product. At the same time, the outer layer is a PET / PET / CPP three-layer composite structure, which is moisture-proof, high-temperature resistant and easy to seal, and has better performance. In addition, by arranging a front bag body and a rear bag body on the front and back sides of the main bag body respectively, the front bag body and the rear bag body can be used to store disinfectant wipes and dry paper towels respectively, which has diverse functions and can provide more convenience for people in the process of enjoying food.

[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 composite food packaging bag, comprising a main bag body and a handle; the main bag body having a storage cavity with an upward opening for storing food; the handle is disposed on the top of the main bag body; characterized in that: The main bag body includes an inner layer and an outer layer; the inner layer includes an anti-stretching layer, a waterproof layer and an anti-puncture layer, the waterproof layer is adhered and fixed to the outer surface of the anti-stretching layer, and the anti-puncture layer is adhered and fixed to the outer surface of the waterproof layer; the outer layer is a three-layer composite structure of PET / PET / CPP, and the outer layer completely covers the outer surface of the inner layer; and the front and back sides of the main bag body are respectively provided with a front bag body and a rear bag body, the front bag body and the front side of the main bag body are surrounded to form a front accommodating chamber with an upward opening, and a disinfectant wet wipe is arranged in the front accommodating chamber, and the rear bag body and the rear side of the main bag body are surrounded to form a rear accommodating chamber with an upward opening, and a dry paper towel is arranged in the rear accommodating chamber.

2. The moisture-proof composite food packaging bag according to claim 1, characterized in that: The anti-stretching layer is made of high-density polyethylene, polypropylene, linear low-density polyethylene, nylon or polyester.

3. The moisture-proof composite food packaging bag according to claim 1, characterized in that: The waterproof layer is a BOPP / VMCPP double-layer composite structure.

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

5. The moisture-proof composite food 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 storage cavity, and a second sealing strip is bonded and fixed to the other side of the opening of the storage cavity. The second sealing strip and the first sealing strip are detachably sealed to seal the opening of the storage cavity.

6. The moisture-proof composite food packaging bag according to claim 5, 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.

7. The moisture-proof composite food packaging bag according to claim 5, characterized in that: The handle includes two tensile film strips, which are respectively located above the first sealing strip and the second sealing strip. The two ends of the two tensile film strips are separately arranged on the left and right and are hot-melt connected and fixed to the main bag body.

8. The moisture-proof composite food packaging bag according to claim 1, characterized in that: The front bag body is a film, and the bottom edge and left and right sides of the front bag body are fixed to the main bag body by hot melt. A front removable glue is provided at the opening of the front accommodating cavity, and the front removable glue is bonded between the front bag body and the main bag body to seal the opening of the front accommodating cavity.

9. The moisture-proof composite food packaging bag according to claim 1, characterized in that: The rear bag body is a film, and the bottom edge and left and right side edges of the rear bag body are fixed to the main bag body by hot melt. A rear removable glue is provided at the opening of the rear accommodating cavity, and the rear removable glue is bonded between the rear bag body and the main bag body to seal the opening of the rear accommodating cavity.

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