High-toughness and high-temperature-resistant food packaging bag

Abstract

The utility model discloses a food packaging bag with high toughness and high temperature resistance. The food packaging bag comprises a bag body and a handle, the bag body is provided with a storage cavity which is provided with an upward opening and is used for storing food; the handle is arranged at the top of the bag body; the bag body comprises an anti-puncture base layer, a high-toughness layer, a high-temperature-resistant layer, a fresh-keeping layer, a printing layer and a waterproof layer; the bag body is designed to comprise the anti-puncture base layer, the high-toughness layer, the high-temperature-resistant layer, the fresh-keeping layer, the printing layer and the waterproof layer, so that the product has the good anti-puncture characteristic, high toughness and good high-temperature resistance, the service life of the product is effectively prolonged, the product further has the fresh-keeping and waterproof functions, the functions are diversified, the use requirement is met, and meanwhile, the window is formed, so that the service life of the product is prolonged. The inner layer and the outer layer are arranged in a matched mode, the inner layer is made of a transparent high-temperature-resistant plastic material, the outer layer is a transparent thermochromic film, food in the containing cavity can be seen through the window, the color of the window can be changed according to the temperature, and the product attractiveness is better.

Description

Technical Field

[0001] This utility model relates to the field of packaging bags, and in particular to a high-toughness, high-temperature resistant food packaging bag. Background Technology

[0002] Plastic packaging bags are bags made from plastic and used for packaging various items in production and daily life. They are widely used in daily life and industrial production. Commonly used plastic packaging bags are mostly made of polyethylene film, which is non-toxic and therefore suitable for food packaging. Another type of film is made of polyvinyl chloride (PVC). While PVC itself is also non-toxic, some additives used in the film, depending on its intended use, can be harmful to the human body and thus possess a certain degree of toxicity. Plastic packaging bags can be classified according to their material, including OPP, CPP, PP, PE, PVA, EVA, composite bags, and co-extruded bags.

[0003] Food packaging bags are among the most common types of plastic packaging bags, primarily used for packaging food. Packaging is becoming increasingly important in people's lives, and new requirements are being placed on food packaging.

[0004] Existing food packaging bags mainly 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, the bag body in the existing technology is a single-layer structure made of plastic, which has relatively weak toughness, high temperature resistance, and water resistance, resulting in a short service life, lack of preservation function, and insufficient product aesthetics, thus failing to provide greater convenience for users. Therefore, it is necessary to improve current food packaging bags. Utility Model Content

[0005] In view of this, the present invention addresses the deficiencies of the existing technology, and its main purpose is to provide a high-toughness, high-temperature resistant food packaging bag, which can effectively solve the problems of short service life, lack of preservation function and insufficient aesthetics of existing food packaging bags.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-toughness, high-temperature resistant food packaging bag includes a bag body and a handle; the bag body has a storage cavity with an upward-facing opening for storing food; the handle is located at the top of the bag body; the bag body includes a puncture-resistant base layer, a high-toughness layer, a high-temperature resistant layer, a preservation layer, a printing layer, and a waterproof layer; the high-toughness layer is adhered and fixed to the inner surface of the puncture-resistant base layer, the high-temperature resistant layer is adhered and fixed to the inner surface of the high-toughness layer, the preservation layer is adhered and fixed to the inner surface of the high-temperature resistant layer, the printing layer is printed and formed on the outer surface of the puncture-resistant base layer, and the waterproof layer is a transparent film adhered and fixed to the outer surface of the printing layer; and the front side of the bag body has a window, in which an inner layer and an outer layer are filled and formed, the inner layer is a transparent plastic material, and the outer layer is a transparent thermochromic film, which is adhered and fixed to the outer surface of the inner layer.

[0008] As a preferred embodiment, the puncture-resistant base layer is made of polyvinylidene chloride, co-extruded polyethylene, or ethylene-vinyl alcohol copolymer, and the thickness of the puncture-resistant base layer is 1-2 mm, which can effectively enhance the overall puncture resistance of the bag body to better protect the food located in the storage cavity.

[0009] As a preferred embodiment, the high-toughness layer is a sepiolite fiber layer with a thickness of 0.5-1mm, which effectively enhances the overall toughness of the bag and makes the bag more durable.

[0010] As a preferred embodiment, the high-temperature resistant layer is a POM plastic layer with a thickness of 0.5-1mm, which can effectively improve the high-temperature resistance of the bag body and further protect the food inside the storage cavity (preventing food spoilage at high temperatures).

[0011] As a preferred embodiment, the preservation layer is a polyethylene layer with a thickness of 1-1.5 mm.

[0012] As a preferred embodiment, the waterproof layer is a BOPP / VMCPP double-layer composite structure with a thickness of 1-1.5mm, which can extend the shelf life of food when it is loaded.

[0013] As a preferred embodiment, 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 together to seal the opening of the storage cavity, which facilitates resealing after opening.

[0014] As a preferred embodiment, the inner side of the first sealing strip is recessed with a dovetail groove, and the inner side of the second sealing strip is protruded with a dovetail block. The dovetail block and the dovetail groove are engaged and sealed together, resulting in a simple structure, easy disassembly and assembly, and a stable connection.

[0015] As a preferred embodiment, the handle includes two tensile adhesive strips, which are respectively located above the first sealing strip and the second sealing strip. The two ends of the two tensile adhesive strips are separated to the left and right and are fixed to the top edge of the bag body by clamping and heat fusion. The structure is simple and easy to manufacture.

[0016] As a preferred embodiment, the window is located in the middle of the front side of the bag body, and the window is peach-shaped, which is aesthetically pleasing.

[0017] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0018] By designing the bag body to include a puncture-resistant base layer, a high-toughness layer, a high-temperature resistant layer, a preservation layer, a printing layer, and a waterproof layer, this product possesses excellent puncture resistance, high toughness, and good high-temperature resistance, effectively extending the product's lifespan. It also features preservation and waterproofing functions, offering versatility to meet various usage needs. Furthermore, by incorporating a window and inner and outer layers—the inner layer being a transparent plastic material and the outer layer a transparent thermochromic film—the food inside the storage cavity can be seen through the window. The window also changes color according to temperature, enhancing the product's aesthetic appeal.

[0019] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

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

[0021] Figure 2 This is a cross-sectional view of a preferred embodiment of the present invention.

[0022] Explanation of reference numerals in the attached diagram:

[0023] 10. Bag body; 11. Puncture-resistant base layer

[0024] 12. High-toughness layer 13. High-temperature resistant layer

[0025] 14. Preservation layer 15. Printing layer

[0026] 16. Waterproof layer 17. Inner layer

[0027] 18. Outer layer 101. Storage cavity

[0028] 102, Window 20, Handle

[0029] 21. Tensile adhesive tape; 30. First sealing strip

[0030] 31. Dovetail groove; 40. Second sealing strip

[0031] 41. Swallowtail block. Detailed Implementation

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

[0033] The bag body 10 has an upward-facing storage cavity 101 for storing food. Specifically, the bag body 10 includes a puncture-resistant base layer 11, a high-toughness layer 12, a high-temperature resistant layer 13, a preservation layer 14, a printing layer 15, and a waterproof layer 16. The high-toughness layer 12 is adhered and fixed to the inner surface of the puncture-resistant base layer 11, the high-temperature resistant layer 13 is adhered and fixed to the inner surface of the high-toughness layer 12, the preservation layer 14 is adhered and fixed to the inner surface of the high-temperature resistant layer 13, the printing layer 15 is printed and formed on the outer surface of the puncture-resistant base layer 11, and the waterproof layer 16 is a transparent film adhered and fixed to the outer surface of the printing layer 15. In this embodiment, the puncture-resistant base layer 11 is polyvinylidene chloride, co-extruded polyethylene, or ethylene-vinyl alcohol copolymer, and the thickness of the puncture-resistant base layer 11 is 1-2 mm. The puncture-resistant base layer 11 can effectively enhance the overall puncture resistance of the bag body 10 to better protect the food located in the storage cavity 101. The high-toughness layer 12 is a sepiolite fiber layer with a thickness of 0.5-1mm. This layer effectively enhances the overall toughness of the bag body 10, making it more durable. The high-temperature resistant layer 13 is a POM plastic layer with a thickness of 0.5-1mm. This layer effectively improves the high-temperature resistance of the bag body 10 and further protects the food inside the storage cavity 101 (preventing spoilage at high temperatures). The preservation layer 14 is a polyethylene layer with a thickness of 1-1.5mm. This layer extends the shelf life of food when it is filled. The printing layer 15 is made of ink with a thickness of 0.2-0.3mm. The waterproof layer 16 is a double-layer composite structure of BOPP / VMCPP. The thickness of the waterproof layer 16 is 1-1.5mm. The waterproof layer 16 has the characteristics of moisture resistance, oil resistance, oxygen barrier and light blocking, which meet the packaging requirements of dry food.

[0034] Furthermore, a window 102 is provided on the front side of the bag body 10, connecting the storage cavity 101 to the outside. The window 102 is filled with an inner layer 17 and an outer layer 18. The inner layer 17 is made of transparent plastic, and the outer layer 18 is a transparent thermochromic film. The outer layer 18 is adhered and fixed to the outer surface of the inner layer 17. The outer layer 18 changes color with temperature changes, allowing the user to intuitively and conveniently determine the temperature based on the color change. In this embodiment, the window 102 is located in the middle of the front side of the bag body 10, and its peach-shaped design, combined with the color change, makes it very aesthetically pleasing.

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

[0036] The handle 20 is located on the top of the bag body 10. Specifically, the handle 20 includes two tensile adhesive strips 21, which are located above the first sealing strip 30 and the second sealing strip 40, respectively. The two ends of the two tensile adhesive strips 21 are separated to the left and right and are fixed to the top edge of the bag body 10 by clamping and heat fusion. The structure is simple and easy to manufacture.

[0037] The usage method of this embodiment is described in detail below:

[0038] During packaging, the food is placed in the storage cavity 101, and then the second sealing strip 40 and the first sealing strip 30 are sealed together. Next, the two tensile film strips 21 are tied together, and then the two tensile film strips 21 can be lifted for carrying. The type of food placed in the storage cavity 101 can be seen through the outer layer 18 and inner layer 17 of the window 102. When the user needs to eat 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. The food can then be taken out of the storage cavity 101 by hand for consumption.

[0039] The key design feature of this invention is that by designing the bag body to include a puncture-resistant base layer, a high-toughness layer, a high-temperature resistant layer, a preservation layer, a printing layer, and a waterproof layer, the product possesses excellent puncture resistance, high toughness, and good high-temperature resistance, effectively extending the product's service life. It also has preservation and waterproof functions, offering versatility to meet various usage needs. Furthermore, by opening a window and incorporating inner and outer layers—the inner layer being a transparent plastic material and the outer layer a transparent thermochromic film—the food inside the storage cavity can be seen through the window, which can also change color according to temperature, enhancing the product's aesthetic appeal.

[0040] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A high-toughness, high-temperature resistant food packaging bag, comprising a bag body and a handle; the bag body has an upward-opening storage cavity for storing food; the handle is disposed at the top of the bag body; characterized in that: The bag body includes a puncture-resistant base layer, a high-toughness layer, a high-temperature resistant layer, a preservation layer, a printing layer, and a waterproof layer. The high-toughness layer is adhered and fixed to the inner surface of the puncture-resistant base layer, the high-temperature resistant layer is adhered and fixed to the inner surface of the high-toughness layer, the preservation layer is adhered and fixed to the inner surface of the high-temperature resistant layer, the printing layer is printed and formed on the outer surface of the puncture-resistant base layer, and the waterproof layer is a transparent film adhered and fixed to the outer surface of the printing layer. Furthermore, the front side of the bag body has a window, which is filled with an inner layer and an outer layer. The inner layer is made of transparent plastic, and the outer layer is a transparent thermochromic film adhered and fixed to the outer surface of the inner layer. The puncture-resistant base layer is made of polyvinylidene chloride, co-extruded polyethylene, or ethylene-vinyl alcohol copolymer; the high-toughness layer is a sepiolite fiber layer; the high-temperature resistant layer is a POM plastic layer; the preservation layer is a polyethylene layer; the waterproof layer is a BOPP / VMCPP double-layer composite structure; and the printing layer is made of ink.

2. The high-toughness, high-temperature resistant food packaging bag according to claim 1, characterized in that: The thickness of the puncture-resistant base layer is 1-2mm.

3. The high-toughness, high-temperature resistant food packaging bag according to claim 1, characterized in that: The thickness of the high-toughness layer is 0.5-1 mm.

4. The high-toughness, high-temperature resistant food packaging bag according to claim 1, characterized in that: The thickness of the high-temperature resistant layer is 0.5-1mm.

5. The high-toughness, high-temperature resistant food packaging bag according to claim 1, characterized in that: The thickness of the preservation layer is 1-1.5 mm.

6. The high-toughness, high-temperature resistant food packaging bag according to claim 1, characterized in that: The thickness of the waterproof layer is 1-1.5 mm.

7. The high-toughness, high-temperature resistant 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 together to seal the opening of the storage cavity.

8. The high-toughness, high-temperature resistant food packaging bag according to claim 7, characterized in that: The first sealing strip has a dovetail groove recessed on its inner side, and the second sealing strip has a dovetail block protruding on its inner side. The dovetail block engages with the dovetail groove for a sealing fit.

9. The high-toughness, high-temperature resistant food packaging bag according to claim 7, characterized in that: The handle includes two tensile adhesive strips, which are located above the first and second sealing strips, respectively. The two ends of the two tensile adhesive strips are separated to the left and right and are fixed to the top edge of the bag body by clamping and heat-melting.

10. The high-toughness, high-temperature resistant food packaging bag according to claim 1, characterized in that: The window is located in the middle of the front side of the bag.

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