Acrylic hot melt adhesive film

Abstract

The utility model discloses an acrylic hot melt adhesive film, which relates to the technical field of hot melt adhesive films and comprises a film body, a plurality of positioning adhesive point layers are fixedly connected to the surface of one side of the film body, and a first protective oil-stain-resistant film layer is fixedly connected to the tops of the plurality of positioning adhesive point layers. A first protective oil-stain-resistant film layer is adhered to the surface of one side of the film body, a second protective oil-stain-resistant film layer is adhered to the surface of the other side of the film body, the film body comprises a main body layer, an anti-static film layer is fixedly connected to one side of the main body layer, a flame-retardant coating is fixedly connected to the other side of the main body layer, and an anti-ultraviolet coating is fixedly connected to the surface of the anti-static film layer. According to the film body provided by the utility model, the anti-static, anti-ultraviolet and anti-scraping protection functions are simultaneously realized on the basis of facilitating adhesion positioning between the film body and an object, so that the problems that an existing acrylic hot melt adhesive film lacks effective adhesion positioning during adhesion operation, and lacks the anti-static, anti-ultraviolet and anti-scraping protection functions and the like are solved.

Description

Technical Field

[0001] This utility model relates to the field of hot melt adhesive film technology, specifically to an acrylic hot melt adhesive film. Background Technology

[0002] Acrylic hot melt adhesive film refers to hot melt adhesive film made of acrylic (acrylate polymer). This type of hot melt adhesive film is mainly composed of acrylic resin, and is made by adding plasticizers, tackifying resins, antioxidants and other additives through a specific production process. It has the characteristics of high transparency, strong adhesion and good weather resistance. Its main component is acrylic, so it is called acrylic hot melt adhesive film.

[0003] Existing acrylic hot melt adhesive films, lacking an effective bonding and positioning mechanism, are prone to displacement during bonding, making precise alignment difficult and reducing product assembly accuracy. Furthermore, during production, storage, and use, acrylic hot melt adhesive films are susceptible to static electricity due to friction. Accumulated static electricity attracts dust and other fine particles, affecting the film's cleanliness and reducing its adhesion. The surface is also easily scratched, affecting not only the product's appearance but also potentially damaging the film's structural integrity, reducing its protective performance and lifespan. Long-term exposure to ultraviolet light leads to aging and degradation, resulting in decreased bonding strength, yellowing, and reduced transparency, severely impacting product performance and appearance. Utility Model Content

[0004] In view of the problems existing in the current acrylic hot melt adhesive film, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide an acrylic hot melt adhesive film that solves the problems of existing acrylic hot melt adhesive films lacking effective adhesion and positioning during bonding operations, and lacking protective functions such as antistatic, anti-ultraviolet and anti-scratch properties.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An acrylic hot melt adhesive film includes a film body. A plurality of positioning adhesive dots are fixedly connected to one side surface of the film body. A first protective anti-oil film layer is fixedly connected to the top of the plurality of positioning adhesive dots. A second protective anti-oil film layer is adhered to the other side surface of the film body. The film body includes a main body layer. An antistatic film layer is fixedly connected to one side of the main body layer. A flame-retardant coating is fixedly connected to the other side of the main body layer. An anti-ultraviolet coating is fixedly connected to the surface of the antistatic film layer. A hydrophobic coating is fixedly connected to the surface of the anti-ultraviolet coating. An anti-chemical corrosion coating is fixedly connected to the surface of the hydrophobic coating. A scratch-resistant coating is fixedly connected to the surface of the anti-chemical corrosion coating.

[0008] The cavity of the main body layer is provided with an antioxidant filling layer and a plasticizer filling layer, which are fixedly connected to each other. The main body layer is an acrylic polymer main body layer, the antistatic film layer is a polyaniline antistatic film layer, the anti-ultraviolet coating is a polymethyl methacrylate anti-ultraviolet coating, the scratch-resistant coating is a polyurethane scratch-resistant coating, each of the positioning adhesive dots is a silicone pressure-sensitive adhesive positioning adhesive dot layer, and the first and second protective anti-oil stain film layers are both PE protective film anti-oil stain film layers.

[0009] Preferably, multiple micropores for enhanced adhesion are formed on both sides of the main body layer.

[0010] Preferably, the flame-retardant coating is a flame-retardant coating of a nanocomposite material coating.

[0011] Preferably, the hydrophobic coating is a hydrophobic coating of a fluoropolymer coating.

[0012] Furthermore, the chemical corrosion resistant coating is a chemical corrosion resistant coating of polytetrafluoroethylene coating.

[0013] Preferably, the antioxidant filler layer is an antioxidant filler layer of acrylic resin coating.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] 1. This utility model utilizes multiple positioning adhesive dots on one side of the membrane surface to adhere to the object before hot pressing, preventing membrane displacement and ensuring the hot pressing effect. Utilizing multiple reinforcing adhesive micropores on both sides of the main body layer, the hot melt adhesive film can better adhere to the surface of the object during hot pressing, filling tiny unevenness, increasing the contact area, and significantly improving the bonding strength.

[0016] 2. This utility model utilizes a membrane composed of an antistatic film layer, an anti-ultraviolet coating, a scratch-resistant coating, a hydrophobic coating, a chemical corrosion-resistant coating, and a flame-retardant coating. The antistatic film layer eliminates static electricity and prevents dust adsorption from affecting adhesion; the anti-ultraviolet coating resists ultraviolet rays and delays aging; the scratch-resistant coating protects the surface; the hydrophobic coating prevents water absorption; the chemical corrosion-resistant coating extends service life; and the flame-retardant coating improves fire safety and reduces smoke generation.

[0017] 3. This utility model utilizes an antioxidant filling layer and a plasticizer filling layer disposed in the main body cavity. The antioxidant filling layer prevents the material from oxidizing and avoids yellowing and discoloration, while the plasticizer filling layer increases the material's flexibility. The materials of each layer work together to make the membrane suitable for a variety of complex application scenarios. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a partial first sectional perspective view of the present invention;

[0021] Figure 3 This is a partial second sectional perspective view of the present invention.

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

[0023] 1. Membrane body; 2. Positioning adhesive dot layer; 3. First protective anti-oil film layer; 4. Second protective anti-oil film layer; 5. Main body layer; 6. Antistatic film layer; 7. Flame retardant coating; 8. Anti-ultraviolet coating; 9. Hydrophobic coating; 10. Anti-chemical corrosion coating; 11. Scratch-resistant coating; 12. Anti-oxidation filler layer; 13. Plasticizer filler layer; 14. Reinforcing adhesion micropores. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] This utility model discloses an acrylic hot melt adhesive film.

[0026] This utility model provides, for example Figure 1-3 An acrylic hot melt adhesive film is shown, comprising a film body 1, a plurality of positioning adhesive dots 2 are fixedly connected to one side surface of the film body 1, a first protective anti-oil stain film layer 3 is fixedly connected to the top of the plurality of positioning adhesive dots 2, a second protective anti-oil stain film layer 4 is bonded to the other side surface of the film body 1, the film body 1 includes a main body layer 5, an antistatic film layer 6 is fixedly connected to one side of the main body layer 5, a flame retardant coating 7 is fixedly connected to the other side of the main body layer 5, an anti-ultraviolet coating 8 is fixedly connected to the surface of the antistatic film layer 6, a hydrophobic coating 9 is fixedly connected to the surface of the anti-ultraviolet coating 8, an anti-chemical corrosion coating 10 is fixedly connected to the surface of the hydrophobic coating 9, and a scratch-resistant coating 11 is fixedly connected to the surface of the anti-chemical corrosion coating 10.

[0027] The cavity of the main body layer 5 is provided with an antioxidant filling layer 12 and a plasticizer filling layer 13, which are fixedly connected to each other. The main body layer 5 is an acrylic polymer main layer, the antistatic film layer 6 is a polyaniline antistatic film layer, the anti-ultraviolet coating 8 is a polymethyl methacrylate anti-ultraviolet coating, the scratch-resistant coating 11 is a polyurethane scratch-resistant coating, each positioning adhesive dot layer 2 is a silicone pressure-sensitive adhesive positioning adhesive dot layer, and the first protective anti-oil stain film layer 3 and the second protective anti-oil stain film layer 4 are both PE protective film anti-oil stain film layers. By using the multiple positioning adhesive dot layers 2, the film 1 is fixed to the surface of the object by adhering to it before hot pressing, preventing the film from shifting and affecting the effect after hot pressing. The protective film consists of a first protective anti-oil film layer 3 and a second protective anti-oil film layer 4, which protect both sides of the film 1 before use, preventing oil stains from affecting its use. Utilizing an antistatic film layer 6, a flame-retardant coating 7, an anti-UV coating 8, a hydrophobic coating 9, an anti-chemical corrosion coating 10, and a scratch-resistant coating 11, the antistatic film layer 6 prevents static electricity accumulation. Acrylic hot melt adhesive film is prone to generating static electricity due to friction during use, and this static electricity attracts dust and impurities from the surrounding environment. The antistatic film layer 6 effectively eliminates or reduces static electricity on the adhesive film surface, keeping the film clean and preventing dust and other contaminants from affecting the adhesion between the film and the object, thereby improving adhesion quality and reliability. The flame-retardant coating 7 enhances fire safety, and the anti-UV coating 8 resists UV damage. Long-term exposure to UV light damages the molecular structure of acrylic hot melt adhesive film, leading to aging and degradation. The anti-UV coating effectively absorbs or reflects UV rays, reducing their impact. Direct exposure to ultraviolet light slows down the aging process of the adhesive film, extending its service life. The hydrophobic coating 9 makes the film waterproof, the anti-chemical corrosion coating 10 enhances its resistance to chemical corrosion, and the scratch-resistant coating 11 improves its surface scratch resistance. This forms a hard protective film on the adhesive film surface, effectively resisting scratches from external objects, reducing scratches, and maintaining the integrity of the film surface. The antioxidant filler layer 12 prevents material oxidation, and the plasticizer filler layer 13 increases the material's flexibility. The materials used in each layer, such as acrylate polymers, polyaniline, polymethyl methacrylate, and polyurethane, leverage their respective advantages and work together to create a film with excellent overall performance. It is suitable for various applications with complex performance requirements, thus solving the problems of existing acrylic hot melt adhesive films lacking effective adhesion and positioning during bonding operations, as well as lacking antistatic, anti-ultraviolet, and scratch-resistant protective functions.

[0028] To enhance adhesion between the material and the object during hot pressing, such as Figure 3As shown, multiple reinforcing adhesive micropores 14 are provided on both sides of the main body layer 5. By utilizing the multiple reinforcing adhesive micropores 14, the hot melt adhesive film can be better adhered to the surface of the object during hot pressing. The micropores allow the hot melt adhesive to flow better and fill the tiny unevenness on the surface of the object during hot pressing, increasing the contact area and improving the bonding strength.

[0029] In order to achieve flame-retardant function of membrane 1, such as Figure 3 As shown, the flame-retardant coating 7 is a flame-retardant coating of nanocomposite material coating. By using the flame-retardant coating 7 set as nanocomposite material coating, the film 1 can achieve flame-retardant function. While playing a flame-retardant role, it can also reduce the smoke generated when the hot melt adhesive film burns. Smoke is one of the important factors causing casualties in fire. Reducing smoke generation can improve the visibility at the fire scene, which is conducive to the evacuation of personnel and the development of rescue work.

[0030] To make membrane 1 hydrophobic, such as Figure 3 As shown, the hydrophobic coating 9 is a hydrophobic coating of fluoropolymer coating. By using the hydrophobic coating 9 of fluoropolymer coating, the film 1 achieves hydrophobic function, preventing the hot melt adhesive film from absorbing moisture in a humid environment and affecting its performance, such as avoiding problems such as softening of the adhesive film and reduced adhesion caused by water absorption.

[0031] In order for membrane 1 to achieve chemical corrosion resistance, such as Figure 3 As shown, the anti-chemical corrosion coating 10 is an anti-chemical corrosion coating of polytetrafluoroethylene (PTFE) coating. By using the anti-chemical corrosion coating 10 of PTFE coating, the film 1 can achieve the function of anti-chemical corrosion, preventing chemical substances from reacting chemically with the substrate or physically eroding it, thereby extending the service life of the substrate material.

[0032] To achieve antioxidant function, such as Figure 3 As shown, the antioxidant filler layer 12 is an antioxidant filler layer of acrylic resin coating. By using the antioxidant filler layer 12 of acrylic resin coating, the film 1 can achieve antioxidant function and avoid yellowing and discoloration.

[0033] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An acrylic hot melt adhesive film comprising a film body (1), characterized in that, The side surface of the film body (1) is fixedly connected with a plurality of positioning glue point layers (2), the top of the plurality of positioning glue point layers (2) is fixedly connected with a first protective anti-oil film layer (3), the other side surface of the film body (1) is bonded with a second protective anti-oil film layer (4), the film body (1) comprises a main body layer (5), one side of the main body layer (5) is fixedly connected with an anti-static film layer (6), the other side of the main body layer (5) is fixedly connected with a flame-retardant coating (7), the surface of the anti-static film layer (6) is fixedly connected with an anti-ultraviolet coating (8), the surface of the anti-ultraviolet coating (8) is fixedly connected with a hydrophobic coating (9), the surface of the hydrophobic coating (9) is fixedly connected with an anti-chemical corrosion coating (10), and the surface of the anti-chemical corrosion coating (10) is fixedly connected with a scratch-resistant coating (11). The cavity of the main body layer (5) is provided with an antioxidant filling layer (12) and a plasticizer filling layer (13), the antioxidant filling layer (12) and the plasticizer filling layer (13) are fixedly connected with each other, the main body layer (5) is an acrylate polymer main body layer, the anti-static film layer (6) is a polyaniline anti-static film layer, the anti-ultraviolet coating (8) is a polymethyl methacrylate anti-ultraviolet coating, the scratch-resistant coating (11) is a polyurethane scratch-resistant coating, each positioning glue point layer (2) is a silicone pressure-sensitive adhesive positioning glue point layer, and the first protective anti-oil film layer (3) and the second protective anti-oil film layer (4) are both PE protective film protective anti-oil film layers.

2. The hot melt adhesive film according to claim 1, wherein The two side surfaces of the main body layer (5) are both provided with a plurality of reinforced adhesion micropores (14).

3. The hot melt adhesive film according to claim 1, wherein the adhesive film is a film having a thickness of 0.1 to 0.3 mm. The flame-retardant coating (7) is a nano-composite material coating.

4. The hot-melt adhesive film according to claim 1, wherein The hydrophobic coating (9) is a fluoropolymer coating.

5. The hot-melt adhesive film according to claim 1, wherein The anti-chemical corrosion coating (10) is a polytetrafluoroethylene coating.

6. The hot-melt adhesive film according to claim 1, wherein The antioxidant filling layer (12) is an acrylic resin coating.

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