Composite packaging film

Abstract

The utility model relates to the technical field of packaging films, and discloses a composite packaging film which comprises a base layer, a foamed plastic layer is adhered to the upper surface of the base layer, a latex layer is adhered to the upper surface of the foamed plastic layer, an aerogel layer is adhered to the upper surface of the latex layer, a metal fiber layer is adhered to the upper surface of the aerogel layer, and the metal fiber layer is adhered to the upper surface of the metal fiber layer. And a glass fiber layer is adhered to the upper surface of the metal fiber layer. According to the composite packaging film, the metal fiber layer, the glass fiber layer, the polyimide layer and the thermoplastic polyurethane layer are matched, so that the composite packaging film has high puncture resistance, meanwhile, the foamed plastic layer, the latex layer and the aerogel layer are matched, so that the composite packaging film has high buffering capacity, and the service life of the composite packaging film is prolonged. Furthermore, the acting force applied to the composite packaging film by a sharp object when the sharp object punctures the composite packaging film can be weakened and dispersed, so that the puncture resistance of the composite packaging film is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging films, in particular to a composite packaging film. Background Art

[0002] Packaging film is a thin film material used to wrap, protect and seal products. It is usually made of high molecular polymers and has certain flexibility, strength and barrier properties. Packaging film has a wide range of uses. In the food field, it is used to package various foods, including meat, fruits, vegetables, beverages and snacks, etc., effectively maintaining the freshness and hygiene of food. In the industrial field, electronic products, mechanical parts, chemical products, etc. can be well protected by packaging film. In the pharmaceutical industry, packaging film can ensure the safety and effectiveness of drugs and prevent them from deteriorating. Daily chemical products such as shampoo, shower gel, and cosmetics are also inseparable from the protection of packaging film. In addition, packaging film is also used in the agricultural field. It can be used for the packaging of seeds, fertilizers, pesticides, etc., and plays a role in moisture-proof, insect-proof and corrosion-proof. In short, packaging film plays an important role in many fields and is an indispensable part of the modern packaging industry.

[0003] However, existing packaging films are often unable to withstand large external forces or impacts from sharp objects, which is a potential risk for some products that may be squeezed or collided during transportation and storage. Once the packaging film is punctured, it will not only affect the appearance of the product, but may also cause the product to be contaminated or deteriorate. At the same time, due to the poor thermal insulation and antibacterial properties of the packaging film, the quality of the packaged product is prone to change in high temperature or bacterial environment. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, such as: at present, due to the poor puncture resistance of the packaging film, the product is often damaged due to squeezing or impact during transportation or storage. At the same time, due to the poor heat insulation and antibacterial performance of the packaging film, the packaged product is prone to quality changes in high temperature or bacterial environment, and a composite packaging film is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A composite packaging film comprises a base layer, the upper surface of the base layer is bonded with a foam plastic layer, the upper surface of the foam plastic layer is bonded with a latex layer, the upper surface of the latex layer is bonded with an aerogel layer, the upper surface of the aerogel layer is bonded with a metal fiber layer, the upper surface of the metal fiber layer is bonded with a glass fiber layer, the upper surface of the glass fiber layer is bonded with a polyimide layer, and the upper surface of the polyimide layer is bonded with a thermoplastic polyurethane layer.

[0007] Preferably, the thickness ratio of the foam plastic layer, the latex layer and the aerogel layer is 2:1:1.

[0008] Preferably, an aluminum silicate fiber insulation layer is bonded to the bottom of the base layer.

[0009] Preferably, an antibacterial layer is bonded to the bottom of the aluminum silicate fiber insulation layer.

[0010] Preferably, the antibacterial layer includes a tea polyphenol coating and a chitosan coating, the bottom of the aluminum silicate fiber insulation layer is bonded to the upper surface of the tea polyphenol coating, and the bottom of the tea polyphenol coating is bonded to the upper surface of the chitosan coating.

[0011] Preferably, the thickness ratio of the tea polyphenol coating to the chitosan coating is 1:1.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model makes the composite packaging film have strong puncture resistance through the combination of the metal fiber layer, the glass fiber layer, the polyimide layer and the thermoplastic polyurethane layer. At the same time, through the combination of the foam plastic layer, the latex layer and the aerogel layer, the composite packaging film has strong buffering capacity, which can weaken and disperse the force exerted on the composite packaging film by sharp objects when puncturing the composite packaging film, thereby further improving the puncture resistance of the composite packaging film.

[0014] The utility model provides an aluminum silicate fiber insulation layer on the composite packaging film, which can reduce the influence of external temperature on the items in the package and maintain the quality and performance of the items. At the same time, by providing an antibacterial layer composed of a tea polyphenol coating and a chitosan coating on the composite packaging film, the items in the package can be effectively prevented from being contaminated by bacteria and mold, thereby extending their shelf life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the first embodiment of the utility model.

[0016] Figure 2 It is a schematic diagram of the structure of the second embodiment of the utility model.

[0017] In the figure: 1. base layer; 2. foam plastic layer; 3. latex layer; 4. aerogel layer; 5. metal fiber layer; 6. glass fiber layer; 7. polyimide layer; 8. thermoplastic polyurethane layer; 9. aluminum silicate fiber insulation layer; 10. antibacterial layer; 101. tea polyphenol coating; 102. chitosan coating. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0020] Embodiment 1

[0021] Reference Figure 1 A composite packaging film comprises a base layer 1, a foam plastic layer 2 is bonded to the upper surface of the base layer 1, the foam plastic layer 2 is made of polystyrene foam plastic, and has good cushioning performance, a latex layer 3 is bonded to the upper surface of the foam plastic layer 2, the latex layer 3 is made of latex, and has good elasticity and cushioning performance, an aerogel layer 4 is bonded to the upper surface of the latex layer 3, and the aerogel layer 4 is a material with excellent cushioning performance, the thickness ratio of the foam plastic layer 2, the latex layer 3 and the aerogel layer 4 is 2:1:1, and through the cooperation of the foam plastic layer 2, the latex layer 3 and the aerogel layer 4, the composite packaging film has a strong cushioning capacity, and thus The force exerted on the composite packaging film by a sharp object when puncturing the composite packaging film can be weakened and dispersed, thereby further improving the puncture resistance of the composite packaging film. A metal fiber layer 5 is bonded to the upper surface of the aerogel layer 4. The metal fiber layer 5 is made of stainless steel fiber and has good puncture resistance. A glass fiber layer 6 is bonded to the upper surface of the metal fiber layer 5. A polyimide layer 7 is bonded to the upper surface of the glass fiber layer 6. A thermoplastic polyurethane layer 8 is bonded to the upper surface of the polyimide layer 7. Through the cooperation of the metal fiber layer 5, the glass fiber layer 6, the polyimide layer 7 and the thermoplastic polyurethane layer 8, the composite packaging film has strong puncture resistance.

[0022] Embodiment 2

[0023] Reference Figure 2The bottom of the base layer 1 is bonded with an aluminum silicate fiber insulation layer 9. By arranging the aluminum silicate fiber insulation layer 9 on the composite packaging film, the influence of the external temperature on the items in the package can be reduced, and the quality and performance of the items can be kept stable. The bottom of the aluminum silicate fiber insulation layer 9 is bonded with an antibacterial layer 10, and the antibacterial layer 10 includes a tea polyphenol coating 101 and a chitosan coating 102. The bottom of the aluminum silicate fiber insulation layer 9 is bonded to the upper surface of the tea polyphenol coating 101, and the bottom of the tea polyphenol coating 101 is bonded to the upper surface of the chitosan coating 102. The thickness ratio of the tea polyphenol coating 101 to the chitosan coating 102 is 1:1. By arranging the antibacterial layer 10 composed of the tea polyphenol coating 101 and the chitosan coating 102 on the composite packaging film, the items in the package can be effectively prevented from being contaminated by bacteria and molds, thereby extending their shelf life.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. A composite packaging film, comprising a base layer (1), characterized in that: The upper surface of the base layer (1) is bonded with a foam plastic layer (2), the upper surface of the foam plastic layer (2) is bonded with a latex layer (3), the upper surface of the latex layer (3) is bonded with an aerogel layer (4), the upper surface of the aerogel layer (4) is bonded with a metal fiber layer (5), the upper surface of the metal fiber layer (5) is bonded with a glass fiber layer (6), the upper surface of the glass fiber layer (6) is bonded with a polyimide layer (7), and the upper surface of the polyimide layer (7) is bonded with a thermoplastic polyurethane layer (8).

2. A composite packaging film according to claim 1, characterized in that: The thickness ratio of the foam plastic layer (2), the latex layer (3) and the aerogel layer (4) is 2:1:

1.

3. The composite packaging film according to claim 1, characterized in that: An aluminum silicate fiber heat insulation layer (9) is bonded to the bottom of the base layer (1).

4. A composite packaging film according to claim 3, characterized in that: An antibacterial layer (10) is bonded to the bottom of the aluminum silicate fiber thermal insulation layer (9).

5. A composite packaging film according to claim 4, characterized in that: The antibacterial layer (10) comprises a tea polyphenol coating (101) and a chitosan coating (102); the bottom of the aluminum silicate fiber thermal insulation layer (9) is bonded to the upper surface of the tea polyphenol coating (101); and the bottom of the tea polyphenol coating (101) is bonded to the upper surface of the chitosan coating (102).

6. The composite packaging film according to claim 5, characterized in that: The thickness ratio of the tea polyphenol coating (101) to the chitosan coating (102) is 1:1.

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