PE (polyethylene) heat shrinkable film

Abstract

The utility model relates to the field of shrink films, and discloses a PE (polyethylene) heat shrink film which comprises a composite film layer structure, and the composite film layer structure comprises a polyethylene substrate layer, a heat insulation layer, a reinforcing layer, an anti-oxidation layer and a hydrophobic layer. The polyimide heat insulation layer effectively obstructs heat transfer, protects packaged contents from being influenced by an external high-temperature environment and meanwhile maintains the internal temperature stable, and the polyethylene glycol terephthalate reinforcing layer enhances the mechanical strength and tear resistance of the film and ensures reliable protection of products in the transportation and carrying process. The polyphenylene sulfide anti-oxidation layer effectively isolates oxygen and delays the oxidation process of contents, on the whole, the PE heat shrink film not only improves the safety and durability of packaging, but also widens the application range of the PE heat shrink film, and is suitable for more packaging requirements with harsh environments, so that the market competitiveness of the product is improved.

Description

Technical Field

[0001] The utility model relates to the field of shrinkage films, in particular to a PE heat shrinkage film. Background Art

[0002] PE heat shrink film is an industrial packaging product primarily made from polyethylene (PE). It possesses numerous advantages, including high tensile strength, high elongation, good self-adhesion, and high transparency. This film is widely used for the centralized packaging of various goods, particularly for manual or machine wrapping.

[0003] According to the Chinese authorized patent announcement number: CN220720538U, a PE heat shrink film is disclosed, including a shrink film body, the shrink film body includes a base layer, an antistatic layer is provided on the top of the base layer, an anti-ultraviolet layer is provided on the top of the antistatic layer, a light-shielding layer is provided on the top of the anti-ultraviolet layer, a cavity is provided on the inside of the light-shielding layer, and nitrogen is provided on the inside of the cavity; an anti-stretching layer is provided on the top of the light-shielding layer; a wear-resistant layer is provided on the top of the anti-stretching layer; a plurality of tearing notches are provided on both sides of the outer wall of the shrink film body, and every two of the tearing notches are aligned up and down; the outer wall of the shrink film body is positioned A crease is provided between the two tearing edges; anti-pull strips are provided on the outer wall of the shrink film body and on both sides of the crease; the utility model can make the shrink film body have the function of shading and blocking ultraviolet rays, and can effectively protect items that are afraid of light, which is relatively practical. However, the PE heat shrink film still has some shortcomings. The comprehensive performance of the PE heat shrink film is insufficient, especially in terms of heat insulation, mechanical strength, anti-oxidation and waterproof and oil-proof performance. As a result, it cannot provide sufficient protection for the product in harsh environments or occasions with high requirements for packaging protection, limiting its application scope in certain industries and the improvement of its market competitiveness. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a PE heat shrink film, which solves the problem that the comprehensive performance of PE heat shrink film is insufficient, especially the limited performance in terms of thermal insulation, mechanical strength, anti-oxidation and waterproof and oil-proof, resulting in the inability to provide sufficient protection for products in harsh environments or occasions with high requirements for packaging protection.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a PE heat shrinkable film, including a composite film layer structure, the composite film layer structure includes a polyethylene matrix layer, a thermal insulation layer, a reinforcement layer, an anti-oxidation layer and a hydrophobic layer, the outer surface of the polyethylene matrix layer is embossed with a thermal insulation layer, the outer surface of the thermal insulation layer is embossed with a reinforcement layer, the outer surface of the reinforcement layer is embossed with an anti-oxidation layer, and the outer surface of the anti-oxidation layer is embossed with a hydrophobic layer.

[0006] Preferably, a plurality of hydrophobic films are evenly distributed on the outer surface of the hydrophobic layer, and an air pressure buffer cavity is provided between the plurality of hydrophobic films and the hydrophobic layer.

[0007] Preferably, the air pressure buffer chamber is filled with air.

[0008] Preferably, the composite membrane layer structure is wound around the outside of the hollow cylinder, and both upper and lower ends of the hollow cylinder are fixedly connected with anti-slip clips.

[0009] Preferably, the thermal insulation layer is made of polyimide.

[0010] Preferably, the reinforcement layer is made of polyethylene terephthalate.

[0011] Preferably, the anti-oxidation layer is made of polyphenylene sulfide.

[0012] Preferably, the hydrophobic layer is made of polytetrafluoroethylene. Beneficial effects

[0013] The utility model provides a PE heat shrink film. Compared with the existing technology, it has the following advantages:

[0014] In the present invention, the composite film layer structure is provided, and the multi-layer structure design significantly improves the comprehensive performance of the film. The polyimide insulation layer effectively blocks heat transfer, protecting the package contents from the influence of the external high temperature environment while maintaining internal temperature stability. The polyethylene terephthalate reinforcement layer enhances the mechanical strength and tear resistance of the film, ensuring reliable protection of the product during transportation and handling; the polyphenylene sulfide antioxidant layer effectively isolates oxygen, delays the oxidation process of the contents, and extends the shelf life of the product; the polytetrafluoroethylene hydrophobic layer provides excellent waterproof and oil-proof properties, ensuring that the package contents remain dry in humid environments. Overall, the PE heat shrink film not only improves the safety and durability of the packaging, but also broadens its scope of application, and is suitable for packaging needs in more demanding environments, thereby improving the market competitiveness of the product.

[0015] 2. In the utility model, an air pressure buffer cavity is set up. This structure effectively improves the overall buffering performance and impact resistance of the composite membrane structure by evenly distributing multiple hydrophobic films on the outer surface of the hydrophobic layer and setting an air pressure buffer cavity between the hydrophobic layer and the hydrophobic layer. The air filled in the air pressure buffer cavity can play a buffering role when subjected to external impact, reducing direct damage to internal products. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a PE heat shrinkable film proposed in the utility model;

[0017] Figure 2This is a schematic diagram of the cross-sectional structure of a PE heat shrinkable film proposed in the present invention;

[0018] Figure 3 This is a schematic diagram of the internal material structure of a PE heat shrinkable film proposed in the utility model;

[0019] Legend:

[0020] 1. Composite membrane structure; 101. Polyethylene matrix layer; 102. Thermal insulation layer; 103. Reinforcement layer; 104. Anti-oxidation layer; 105. Hydrophobic layer; 106. Hydrophobic film; 107. Air pressure buffer chamber; 2. Hollow cylinder; 3. Anti-slip clip. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-Figure 3 , the utility model provides two technical solutions, specifically including the following embodiments: Example

[0023] A PE heat shrinkable film comprises a composite film layer structure 1, the composite film layer structure 1 comprises a polyethylene matrix layer 101, a heat insulating layer 102, a reinforcing layer 103, an anti-oxidation layer 104 and a hydrophobic layer 105, the outer surface of the polyethylene matrix layer 101 is embossed with the heat insulating layer 102, the outer surface of the heat insulating layer 102 is embossed with the reinforcing layer 103, the outer surface of the reinforcing layer 103 is embossed with the anti-oxidation layer 104, the outer surface of the anti-oxidation layer 104 is embossed with the hydrophobic layer 105, the heat insulating layer 10 2 is made of polyimide, and the reinforcing layer 103 is made of polyethylene terephthalate. Polyethylene terephthalate has good mechanical strength and toughness. As the reinforcing layer 103, it improves the physical properties of the overall PE heat shrink film. The antioxidant layer 104 is made of polyphenylene sulfide. Polyphenylene sulfide has good chemical resistance and oxidation resistance. The hydrophobic layer 105 is made of polytetrafluoroethylene. Polytetrafluoroethylene has extremely low surface energy and can provide excellent hydrophobicity and anti-stickiness.

[0024] When working, the polyimide insulation layer 102 effectively blocks heat transfer, protects the contents of the package from the influence of the external high temperature environment, and maintains the internal temperature stable. The polyethylene terephthalate reinforcement layer 103 enhances the mechanical strength and tear resistance of the film, ensuring reliable protection of the product during transportation and handling; the polyphenylene sulfide antioxidant layer 104 effectively isolates oxygen, delays the oxidation process of the contents, and extends the shelf life of the product; the polytetrafluoroethylene hydrophobic layer 105 provides excellent waterproof and oil-proof properties, ensuring that the contents of the package remain dry in a humid environment. Overall, the PE heat shrink film not only improves the safety and durability of the packaging, but also broadens its scope of application, making it suitable for packaging needs in more harsh environments, thereby improving the market competitiveness of the product. Example

[0025] On the basis of Example 1, a plurality of hydrophobic films 106 are evenly distributed on the outer surface of the hydrophobic layer 105, and an air pressure buffer cavity 107 is arranged between the plurality of hydrophobic films 106 and the hydrophobic layer 105. The air pressure buffer cavity 107 is filled with air. This structure effectively improves the overall buffering performance and impact resistance of the composite membrane layer structure 1 by evenly distributing a plurality of hydrophobic films 106 on the outer surface of the hydrophobic layer 105 and arranging an air pressure buffer cavity 107 between the hydrophobic film 106 and the hydrophobic layer 105. The air filled in the air pressure buffer cavity 107 can play a buffering role when subjected to external impact, reducing direct damage to the internal product. The composite membrane layer structure 1 is wrapped around the outside of the hollow tube 2, and the upper and lower ends of the hollow tube 2 are fixedly connected with anti-slip clips 3.

[0026] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the application should be included in the scope of protection of the present application.

Claims

1. A PE heat shrinkable film, comprising a composite film layer structure (1), characterized in that: The composite membrane layer structure (1) comprises a polyethylene matrix layer (101), a heat-insulating layer (102), a reinforcement layer (103), an anti-oxidation layer (104) and a hydrophobic layer (105); the outer surface of the polyethylene matrix layer (101) is embossed with the heat-insulating layer (102); the outer surface of the heat-insulating layer (102) is embossed with the reinforcement layer (103); the outer surface of the reinforcement layer (103) is embossed with the anti-oxidation layer (104); and the outer surface of the anti-oxidation layer (104) is embossed with the hydrophobic layer (105).

2. A PE heat shrinkable film according to claim 1, characterized in that: A plurality of hydrophobic films (106) are evenly distributed on the outer surface of the hydrophobic layer (105), and an air pressure buffer cavity (107) is provided between the plurality of hydrophobic films (106) and the hydrophobic layer (105).

3. A PE heat shrinkable film according to claim 2, characterized in that: The air pressure buffer chamber (107) is filled with air.

4. The PE heat shrinkable film according to claim 1, characterized in that: The composite membrane layer structure (1) is wound and arranged outside the hollow cylinder (2), and the upper and lower ends of the hollow cylinder (2) are fixedly connected with anti-slip clips (3).

5. The PE heat shrinkable film according to claim 1, characterized in that: The heat insulation layer (102) is made of polyimide.

6. The PE heat shrinkable film according to claim 1, characterized in that: The reinforcing layer (103) is made of polyethylene terephthalate.

7. The PE heat shrinkable film according to claim 1, characterized in that: The material of the anti-oxidation layer (104) is polyphenylene sulfide.

8. The PE heat shrinkable film according to claim 1, characterized in that: The hydrophobic layer (105) is made of polytetrafluoroethylene.

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