High-elasticity hot melt film

Abstract

The utility model discloses a high-elasticity hot melt film and relates to the technical field of hot melt films. The high-elasticity hot-melt film comprises a hot-melt film body, the interior of the hot-melt film body comprises a base layer, a high-temperature protection coating, a pressure buffer layer, a sealing layer, a high-temperature-resistant layer, a moisture-proof coating, a heat blocking layer and a protective barrier, and the high-temperature protection coating is arranged on the base layer. A pressure buffer layer is arranged on the face, away from the base layer, of the high-temperature protective coating, a sealing layer is arranged on the face, away from the high-temperature protective coating, of the pressure buffer layer, a high-temperature-resistant layer is arranged on the face, away from the pressure buffer layer, of the sealing layer, and a damp-proof coating is arranged on the face, away from the sealing layer, of the high-temperature-resistant layer. A heat blocking layer is arranged on the face, away from the high-temperature-resistant layer, of the damp-proof coating, a protective barrier is arranged on the face, away from the damp-proof coating, of the heat blocking layer, and release paper is arranged on the hot melt film body.

Description

Technical Field

[0001] The utility model relates to the technical field of hot melt films, and particularly relates to a high-elasticity hot melt film. Background Art

[0002] A high-elasticity hot melt film is a plastic film with high elasticity. It can soften when heated and adhere to the surface of other materials. It has good elongation and resilience, and can be stretched within a certain range without breaking. High-elasticity hot melt films are widely used in fields such as clothing, shoe materials, automotive interiors, and furniture. As an adhesive, they can laminate different material layers together to improve the strength and durability of products.

[0003] Chinese Utility Model Patent CN117887392A discloses a skin-friendly, super-soft, and high-elasticity hot melt film, which relates to the technical field of hot melt films. The raw materials of this skin-friendly, super-soft, and high-elasticity hot melt film, by weight percentage, include the following components: SBC-based (SEBS, SEPS, SIS, SBS) elastomers: 45%-75%; TPU: 20%-35%; compatibilizer (maleic anhydride grafted SIS / SBS type): 2%-10%; paraffin oil or naphthenic oil: 2%-5%; tackifying resin (C5 or C9): 1%-5%; antioxidant: 0-0.5%; ultraviolet absorber 0-0.5%. It solves the problems that the elastic bands of the hot melt films commonly used in the current market for women's sports underwear have poor resilience, are not soft enough, and lack a skin-friendly feeling, texture, and Q feeling. The hot melt film of the present invention has high tensile resilience, super softness, strong skin-friendly feeling, and good Q elasticity; the hot melt film of the present invention is used for the lamination of sports underwear fabrics, has good bonding strength, wash resistance, and conformability. The present invention has high tensile resilience, enabling the underwear hot melt film to have good tensile and resilient properties.

[0004] However, the existing high-elasticity hot melt films have poor protective effects and high-temperature resistance during use, resulting in limitations in their application scope. Therefore, developing a high-elasticity hot melt film that has both excellent protective effects and good high-temperature resistance is an urgent need in the current industry. Summary of the Utility Model

[0005] The utility model provides a high-elasticity hot melt film to solve the problems in the background art.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A highly elastic hot melt film, including a hot melt film main body, the interior of the hot melt film main body includes a protective barrier, a heat barrier layer, a high-temperature protection coating, a pressure buffer layer, a sealing layer, a high-temperature resistant layer, a moisture-proof coating, and a base layer. A high-temperature protection coating is provided on the base layer. A pressure buffer layer is provided on the side of the high-temperature protection coating away from the base layer. A sealing layer is provided on the side of the pressure buffer layer away from the high-temperature protection coating. A high-temperature resistant layer is provided on the side of the sealing layer away from the pressure buffer layer. A moisture-proof coating is provided on the side of the high-temperature resistant layer away from the sealing layer. A heat barrier layer is provided on the side of the moisture-proof coating away from the high-temperature resistant layer. A protective barrier is provided on the side of the heat barrier layer away from the moisture-proof coating. A release paper is provided on the hot melt film main body.

[0007] Further, the high-temperature protection coating is made of polyether ether ketone material.

[0008] Further, the pressure buffer layer is made of polycarbonate material.

[0009] Further, the sealing layer is made of rubber material.

[0010] Further, the high-temperature resistant layer is made of polyimide material.

[0011] Further, the moisture-proof coating is polyvinylidene fluoride.

[0012] Further, the heat barrier layer is made of polyaniline material.

[0013] Further, the protective barrier is made of linear low-density polyethylene material.

[0014] Compared with the prior art, the present utility model provides a highly elastic hot melt film, having the following beneficial effects:

[0015] 1. For this highly elastic hot melt film, by setting the high-temperature resistant layer, high-temperature resistance: The polyimide has extremely high thermal stability, usually exceeding 200 °C, and some even as high as over 400 °C, which enables it to maintain structural integrity and stability in high-temperature environments, thereby protecting other layers from the influence of high temperatures; Insulation: Polyimide has good electrical insulation, which can improve the overall insulation performance of the hot melt film, making it widely used in industries such as electronics and electrical; Mechanical properties: The polyimide coating can enhance the tensile strength, wear resistance, and scratch resistance of the hot melt film, making it more durable; Chemical stability: Polyimide has good stability to many chemical reagents, which can prevent the hot melt film from being eroded by chemical substances during use; Easy processability: Polyimide can be easily formed into a film by solution coating, extrusion, or other methods, and can form a multifunctional hot melt film product after being compounded with other materials.

[0016] 2. This highly elastic hot melt film can improve flexibility by setting up a protective barrier: Linear low-density polyethylene has excellent flexibility and ductility. It can increase the bending performance and impact resistance of the hot melt film, making it more adaptable to bonding on irregular surfaces; improve adhesion: Linear low-density polyethylene can provide good adhesion, which helps the hot melt film bond to the surfaces of different materials, expanding its application range; improve weather resistance: Linear low-density polyethylene has good weather resistance and ultraviolet resistance, which can enhance the aging resistance of the hot melt film and extend its service life; adjust the melt index: The melt index of linear low-density polyethylene can adjust the melting temperature and fluidity of the hot melt film to a certain extent, making it easier to process; reduce costs: Compared with other resins, linear low-density polyethylene usually has a lower price. Using it as the surface layer can reduce the overall cost; strengthen the protection effect: The linear low-density polyethylene surface layer can increase the overall thickness of the hot melt film, which is particularly beneficial for applications that require a thicker coating; improve chemical corrosion resistance: Linear low-density polyethylene has good chemical corrosion resistance, which can improve the resistance of the hot melt film to corrosive substances such as acids and alkalis. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 is a composition diagram of the hot melt film body of the present invention.

[0019] In the figure: 1. Hot melt film body; 101. Protective barrier; 102. Heat insulation layer; 103. High-temperature protection coating; 104. Pressure buffer layer; 105. Sealing layer; 106. High-temperature resistant layer; 107. Moisture-proof coating; 108. Base layer; 2. Release paper. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figure 1-2, the present utility model discloses a highly elastic hot melt film, including a hot melt film main body 1, which is characterized in that: the interior of the hot melt film main body 1 includes a protective barrier 101, a heat insulation layer 102, a high-temperature protection coating 103, a pressure buffer layer 104, a sealing layer 105, a high-temperature resistant layer 106, a moisture-proof coating 107 and a base layer 108. A high-temperature protection coating 103 is provided on the base layer 108. A pressure buffer layer 104 is provided on the side of the high-temperature protection coating 103 away from the base layer 108. A sealing layer 105 is provided on the side of the pressure buffer layer 104 away from the high-temperature protection coating 103. A high-temperature resistant layer 106 is provided on the side of the sealing layer 105 away from the pressure buffer layer 104. A moisture-proof coating 107 is provided on the side of the high-temperature resistant layer 106 away from the sealing layer 105. A heat insulation layer 102 is provided on the side of the moisture-proof coating 107 away from the high-temperature resistant layer 106. A protective barrier 101 is provided on the side of the heat insulation layer 102 away from the moisture-proof coating 107. A release paper 2 is provided on the hot melt film main body 1.

[0022] Specifically, the high-temperature protection coating 103 is made of polyether ether ketone material.

[0023] Specifically, the pressure buffer layer 104 is made of polycarbonate material.

[0024] Specifically, the sealing layer 105 is made of rubber material.

[0025] Specifically, the high-temperature resistant layer 106 is made of polyimide material.

[0026] Specifically, the moisture-proof coating 107 is polyvinylidene fluoride.

[0027] Specifically, the heat insulation layer 102 is made of polyaniline material.

[0028] Specifically, the protective barrier 101 is made of linear low-density polyethylene material.

[0029] In use, for the high-temperature protection coating 103, when polyether ether ketone is used as a thermal insulation layer in the hot melt film, it can play the following roles: Excellent heat resistance: Polyether ether ketone has high thermal stability and a very high heat distortion temperature. Therefore, as a thermal insulation layer, it can effectively maintain the structural integrity of the hot melt film at high temperatures. Good heat insulation performance: Polyether ether ketone has good heat insulation performance and can reduce heat transfer, thus helping the hot melt film achieve better heat preservation effect. High strength and rigidity: Polyether ether ketone has a high modulus and high strength, which can increase the rigidity and load-bearing capacity of the hot melt film and make it more suitable for applications that need to withstand greater pressure. Chemical stability: Polyether ether ketone has good stability to many chemical reagents and is not easily corroded. Therefore, it can improve the chemical resistance of the hot melt film. Dimensional stability: Polyether ether ketone has a low coefficient of thermal expansion and excellent dimensional stability. This means that the thermal insulation layer composed of polyether ether ketone can maintain a stable size and shape under temperature changes. Self-lubricity: Polyether ether ketone has certain self-lubricity, which can reduce friction and improve the efficiency of the hot melt film during movement; The pressure buffer layer 104 is made of polycarbonate material with excellent mechanical properties, heat resistance and impact resistance. In the hot melt film, polycarbonate as a buffer layer can play the following roles: Improving toughness: The high toughness of polycarbonate can enhance the impact resistance of the hot melt film and make it not easily broken when subjected to external forces. Good heat resistance: Compared with some other plastics, polycarbonate has better heat resistance and can resist deformation or performance degradation caused by high temperatures to a certain extent. Dimensional stability: Polycarbonate has a low water absorption rate and a small linear expansion coefficient, which makes it have good dimensional stability under different temperature and humidity conditions, conducive to ensuring the structural integrity and sealing effect of the hot melt film. Flame retardancy: Some polycarbonate materials have good flame retardant properties, which can improve the safety of the hot melt film; The sealing layer 105 has sealing performance: Whether it is natural rubber or synthetic rubber, they both have excellent sealing performance and can effectively prevent the penetration of gases and liquids. When rubber is used as the sealing layer of the hot melt film, it can significantly improve the sealing effect of the entire film and prevent the intrusion of moisture, air or other harmful substances. Weather resistance and aging resistance: High-quality rubber has good weather resistance and aging resistance, and can maintain its performance without obvious decline even after long-term use, which is conducive to extending the service life of the hot melt film. Flexibility and adaptability: The flexibility and ductility of rubber enable it to adapt to hot melt films of various shapes and sizes, and can also cope with deformations caused by temperature changes and mechanical stresses. Environmental friendliness: In the case of using environmentally friendly rubber, it can also help reduce the impact on the environment and meet the growing environmental requirements and sustainable development goals; The high-temperature resistance of the high-temperature layer 106: The thermal stability of polyimide is extremely high, usually exceeding 200°C, and some even as high as over 400°C. This enables it to maintain structural integrity and stability in high-temperature environments, thereby protecting other layers from the influence of high temperatures;Insulation: Polyimide has excellent electrical insulation properties, which can improve the overall insulation performance of the hot melt film and enable it to be widely used in the electronics, electrical and other industries; Mechanical properties: The polyimide coating can enhance the tensile strength, abrasion resistance and scratch resistance of the hot melt film, making it more durable; Chemical stability: Polyimide has good stability against many chemical reagents, which can prevent the hot melt film from being eroded by chemical substances during use; Easy processability: Polyimide can easily form a film by solution coating, extrusion or other methods. After being compounded with other materials, it can form a multifunctional hot melt film product; Moisture-proof coating 107, when polyvinylidene fluoride is used as a waterproof layer in the hot melt film, it mainly plays the following roles: Excellent waterproof performance: Polyvinylidene fluoride has excellent water resistance and hydrophilicity, which can effectively prevent water penetration and ensure the waterproof performance of the hot melt film. Excellent chemical corrosion resistance: Polyvinylidene fluoride has good tolerance to most chemical reagents, so it can improve the ability of the hot melt film to resist chemicals and extend its service life. Good weather resistance and UV resistance: Polyvinylidene fluoride has good aging resistance and is not easily degraded when exposed to the outdoor environment for a long time. This enables the waterproof layer composed of it to maintain stable performance for a long time. Easy processability: Compared with other fluoroplastics, polyvinylidene fluoride has better processing performance and can be made into products of various shapes and sizes by injection molding, extrusion and other methods; Heat barrier layer 102, when it is used as a heat insulation layer in the hot melt film, it can play the following roles: Improve heat insulation performance: Polyaniline has good heat insulation effect, which can reduce heat transfer and thus improve the heat insulation performance of the hot melt film. Enhance damping performance: As a heat insulation layer, polyaniline can also increase the damping performance of the hot melt film, reduce vibration and noise. Improve heat resistance: The use of polyaniline can improve the high-temperature resistance of the hot melt film, enabling it to maintain stability at higher temperatures and resist corrosion. Polyaniline has good chemical stability and can resist the erosion of various chemical substances, thus improving the chemical resistance of the hot melt film; Protective barrier 101, which can improve flexibility: Linear low-density polyethylene has excellent flexibility and ductility. It can increase the bending performance and impact resistance of the hot melt film, making it more adaptable to the bonding of irregular surfaces; Improve adhesion: Linear low-density polyethylene can provide good adhesion, which helps the hot melt film to bond with different material surfaces and expands its application range; Improve weather resistance: Linear low-density polyethylene has good weather resistance and UV resistance, which can enhance the aging resistance of the hot melt film and extend its service life; Adjust the melt index: The melt index of linear low-density polyethylene can adjust the melting temperature and fluidity of the hot melt film to a certain extent, making it easier to process; Reduce costs: Compared with other resins, linear low-density polyethylene is usually cheaper. Using it as the surface layer can reduce the overall cost; Strengthen the protection effect: The linear low-density polyethylene surface layer can increase the overall thickness of the hot melt film, which is particularly beneficial for applications that require a thicker coating;Improving chemical corrosion resistance: Linear low-density polyethylene has good chemical corrosion resistance, which can enhance the resistance of the hot-melt film to corrosive substances such as acids and alkalis.

[0030] In summary, for this high-elasticity hot-melt film, by setting the high-temperature resistant layer 106, the high-temperature resistance: The thermal stability of polyimide is extremely high, usually exceeding 200 °C, and some even as high as over 400 °C. This enables it to maintain structural integrity and stability in high-temperature environments, thereby protecting other layers from the influence of high temperatures; Insulation property: Polyimide has good electrical insulation, which can improve the overall insulation performance of the hot-melt film, making it widely used in the electronics, electrical and other industries; Mechanical properties: The polyimide coating can enhance the tensile strength, wear resistance and scratch resistance of the hot-melt film, making it more durable; Chemical stability: Polyimide has good stability to many chemical reagents, which can prevent the hot-melt film from being eroded by chemical substances during use; Easy processability: Polyimide can easily form a film through solution coating, extrusion or other methods. After being compounded with other materials, it can form a multi-functional hot-melt film product; By setting the protective barrier 101, the flexibility can be improved: Linear low-density polyethylene has excellent flexibility and ductility. It can increase the bending performance and impact resistance of the hot-melt film, making it more adaptable to the adhesion of irregular surfaces; Improving adhesion: Linear low-density polyethylene can provide good adhesion, which helps the hot-melt film to adhere to the surfaces of different materials, expanding its application range; Improving weather resistance: Linear low-density polyethylene has good weather resistance and UV resistance, which can enhance the aging resistance of the hot-melt film and extend its service life; Adjusting the melt index: The melt index of linear low-density polyethylene can, to a certain extent, adjust the melting temperature and fluidity of the hot-melt film, making it easier to process; Reducing costs: Compared with other resins, linear low-density polyethylene usually has a lower price. Using it as the surface layer can reduce the overall cost; Strengthening the protection effect: The linear low-density polyethylene surface layer can increase the overall thickness of the hot-melt film, which is particularly beneficial for applications that require a thicker coating; Improving chemical corrosion resistance: Linear low-density polyethylene has good chemical corrosion resistance, which can enhance the resistance of the hot-melt film to corrosive substances such as acids and alkalis.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high elastic hot melt film, comprising a hot melt film body (1), characterized in that: The hot melt film body (1) comprises a protective barrier (101), a heat barrier layer (102), a high temperature protective coating (103), a pressure buffer layer (104), a sealing layer (105), a high temperature resistant layer (106), a moisture proof coating (107) and a base layer (108). The high temperature protective coating (103) is arranged on the base layer (108). The pressure buffer layer (104) is arranged on a side of the high temperature protective coating (103) away from the base layer (108). The pressure buffer layer (104) is away from the high temperature protective coating (103). A sealing layer (105) is provided on one side of the hot melt film body (1); a high temperature resistant layer (106) is provided on the side of the sealing layer (105) away from the pressure buffer layer (104); a moisture-proof coating (107) is provided on the side of the high temperature resistant layer (106) away from the sealing layer (105); a heat barrier layer (102) is provided on the side of the moisture-proof coating (107) away from the high temperature resistant layer (106); a protective barrier (101) is provided on the side of the heat barrier layer (102) away from the moisture-proof coating (107); and a release paper (2) is provided on the hot melt film body (1).

2. A highly elastic hot-melt film according to claim 1, characterized in that: The high temperature protective coating (103) is made of polyetheretherketone material.

3. The high elastic hot melt film according to claim 1, characterized in that: The pressure buffer layer (104) is made of polycarbonate material.

4. The high elastic hot melt film according to claim 1, characterized in that: The sealing layer (105) is made of rubber material.

5. The high elastic hot melt film according to claim 1, characterized in that: The high temperature resistant layer (106) is made of polyimide material.

6. The high elastic hot melt film according to claim 1, characterized in that: The moisture-proof coating (107) is polyvinylidene fluoride.

7. The high elastic hot melt film according to claim 1, characterized in that: The heat barrier layer (102) is made of polyaniline material.

8. The high elastic hot melt film according to claim 1, characterized in that: The protective barrier (101) is a linear low density polyethylene material.

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