Composite film with scratch-resistant hand feeling

Abstract

The composite film comprises a composite film body, the composite film body is composed of an inner film structure and a film layer structure, the inner film structure comprises a PC film layer, a first bonding layer, a PET film layer, a second bonding layer and a PU film layer which are sequentially arranged from top to bottom, and the film layer structure comprises two functional coatings and a nano coating. The inner film structure is located inside the film layer structure, the first bonding layer is used for bonding the PC film layer and the PET film layer, and the second bonding layer is used for bonding the PET film layer and the PU film layer. The composite film with the scratch-resistant hand feeling disclosed by the utility model has excellent scratch resistance and wear resistance, the scratch resistance of the composite film body is obviously improved, and the use effect of the composite film body is better.

Description

Technical Field

[0001] The utility model relates to the technical field of composite films, in particular to a composite film with scratch-resistant hand feeling. Background Art

[0002] A composite film is a separation membrane composed of a microporous membrane or an ultrafiltration membrane as a support layer, and a dense homogeneous membrane with a thickness of only 0.1 - 0.25 μm is covered on its surface as a barrier layer. With the continuous development of technology, the composite film industry is developing towards high quality, high performance, and high efficiency, and its applications in various fields will also be continuously expanded and deepened.

[0003] The patent document with the application number 202320109851.4 discloses a scratch-resistant and stain-resistant composite film, which includes a PVC bottom layer at the bottommost layer. The top of the PVC bottom layer is bonded to the bottom of a PET layer through an adhesive layer. The top of the PET layer is adhered to the top of a bottom coating layer, and the top of the bottom coating layer is adhered to the bottom of a scratch-resistant and stain-resistant layer.

[0004] However, when using traditional composite films, for those films not compounded with scratch-resistant materials, scratches will be left on the film after being accidentally scratched, affecting the use of the composite film. Content of the Utility Model

[0005] The utility model discloses a composite film with scratch-resistant hand feeling, aiming to solve the technical problem that when using traditional composite films, for those films not compounded with scratch-resistant materials, scratches will be left on the film after being accidentally scratched, affecting the use of the composite film.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The composite film with scratch-resistant hand feeling includes a composite film body, which is composed of an inner film structure and a film layer structure. The inner film structure includes a PC film layer, a first adhesive layer, a PET film layer, a second adhesive layer, and a PU film layer arranged in sequence from top to bottom. The film layer structure includes two functional coating layers and a nano coating layer. The inner film structure is located inside the film layer structure.

[0008] In this solution, the PC film layer, the PET film layer, and the PU film layer are compounded together through the first adhesive layer and the second adhesive layer, and a nano coating layer and functional coating layers are covered on the surface, making the composite film body have excellent scratch resistance and wear resistance, significantly improving the scratch resistance performance of the composite film body, and the use effect of the composite film body is better.

[0009] Furthermore, the functional coating layer adopts a scratch-resistant coating layer, and the two functional coating layers are respectively located on the upper surface of the PC film layer and the lower surface of the PU film layer.

[0010] With the above technical solution, this solution requires a scratch-resistant effect. This functional coating uses a scratch-resistant coating that covers the upper and lower surfaces of the inner membrane structure, making the contact surfaces of the upper and lower surfaces of the composite film body more scratch-resistant during use and achieving better use effects.

[0011] Furthermore, the nano-coating is used to coat the four sides of the inner membrane structure, and the inner membrane structure and the two functional coatings are both located inside the nano-coating.

[0012] With the above technical solution, the nano-coating is composed of nano-particles. These nano-particles can fill the tiny defects on the material surface to form a smooth and firm surface, thereby resisting external scratches and abrasions. Using the nano-coating to cover the four sides of the composite film body can improve the overall scratch resistance.

[0013] Furthermore, the PC film layer, the PET film layer, and the PU film layer are used in combination.

[0014] With the above technical solution, the PC film layer is used as the upper surface layer of the composite film body to increase the overall scratch resistance. PET is a commonly used transparent plastic material that provides basic physical properties and transparency. PU is an elastic material used as the lower surface layer of the composite film body, which has good wear resistance and scratch resistance. The PC film, PET film, and PU film are all high-performance thin film materials, and they each have unique physical and chemical properties, which can provide the strength, scratch resistance, and flexibility required by the composite film body.

[0015] As can be seen from the above, the composite film with a scratch-resistant feel includes a composite film body. The composite film body is composed of an inner membrane structure and a film layer structure. The inner membrane structure includes a PC film layer, a first adhesive layer, a PET film layer, a second adhesive layer, and a PU film layer arranged in sequence from top to bottom. The film layer structure includes two functional coatings and a nano-coating, and the inner membrane structure is located inside the film layer structure. The composite film with a scratch-resistant feel provided by the present utility model has excellent scratch resistance and wear resistance, significantly improves the scratch resistance of the composite film body, and has a better use effect for the composite film body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall layered structure of the composite film with a scratch-resistant feel proposed by the present utility model.

[0017] Figure 2 It is a schematic diagram of the internal structure of the nano-coating of the composite film with a scratch-resistant feel proposed by the present utility model.

[0018] Figure 3 It is a schematic diagram of the PET film layer structure of the composite film with a scratch-resistant feel proposed by the present utility model.

[0019] Figure 4 Cross-sectional view of the inner membrane structure of the composite film with scratch-resistant feel proposed by the present utility model.

[0020] In the accompanying drawings: 1, PC film layer; 2, PET film layer; 3, PU film layer; 4, first adhesive layer; 5, second adhesive layer; 6, functional coating; 7, nano-coating; 8, light diffusion surface; 9, sealing prevention layer; 10, resin; 11, organic diffusion particles; 12, inorganic diffusion particles; 13, PET substrate. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Usually, the components of the embodiments of the present application described and marked in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present application.

[0022] The composite film with scratch-resistant feel disclosed by the present utility model is mainly applied to the scenario where when a traditional composite film is used, if the film that is not laminated with scratch-resistant materials is accidentally scratched, scratches will remain on the film, affecting the use of the composite film.

[0023] Referring to Figure 1 、 Figure 2 and Figure 4 , the composite film with scratch-resistant feel includes a composite film body, which is composed of an inner membrane structure and a film layer structure. The inner membrane structure includes a PC film layer 1, a first adhesive layer 4, a PET film layer 2, a second adhesive layer 5, and a PU film layer 3 arranged in sequence from top to bottom. The film layer structure includes two functional coatings 6 and a nano-coating 7. The inner membrane structure is located inside the film layer structure.

[0024] In the specific working process, the PC film layer 1, the PET film layer 2, and the PU film layer 3 are laminated together through the first adhesive layer 4 and the second adhesive layer 5. The functional coatings 6 are coated on the upper and lower surfaces of the inner membrane structure, and the nano-coating 7 is coated around the composite film body, so that the composite film body has excellent scratch resistance and wear resistance, significantly improving the scratch resistance of the composite film body.

[0025] Among them, the first adhesive layer 4 is used to bond the PC film layer 1 and the PET film layer 2, and the second adhesive layer 5 is used to bond the PET film layer 2 and the PU film layer 3. In this way, through the first adhesive layer 4 bonding the PC film layer 1 and the PET film layer 2, and the second adhesive layer 5 bonding the PET film layer 2 and the PU film layer 3, the various film layers of the inner membrane structure are tightly bonded together to form a whole, and the scratch resistance effect is more significant.

[0026] Among them, the functional coating 6 adopts an anti-scratch coating. The two functional coatings 6 are respectively located on the upper surface of the PC film layer 1 and the lower surface of the PU film layer 3. In this way, in this solution, an anti-scratch effect is required, and this functional coating 6 uses an anti-scratch coating. The functional coating 6 can adopt corresponding coating effects according to actual use conditions. For example, adding an antistatic agent to improve the antistatic performance of the composite film, or adding an antibacterial agent to enhance its antibacterial performance. The anti-scratch coating adopted in this article covers the upper and lower surfaces of the inner membrane structure, making the contact surfaces of the upper and lower surfaces of the composite film body more scratch-resistant during use, and the use effect is better.

[0027] Among them, the nano-coating 7 is used to coat the periphery of the inner membrane structure. The inner membrane structure and the two functional coatings 6 are both located inside the nano-coating 7. In this way, the nano-coating 7 is composed of nano-particles. These nano-particles can fill the tiny defects on the material surface to form a smooth and firm surface, thereby resisting external scratches and abrasions. Using the nano-coating 7 to cover the periphery of the composite film body improves the overall scratch resistance performance.

[0028] Referring to Figure 1 and Figure 3 , in a preferred embodiment, the PET film layer 2 is composed of a light diffusion surface 8, a PET substrate 13, and a sealing prevention layer 9. A number of organic diffusion particles 11 and inorganic diffusion particles 12 are respectively provided inside the light diffusion surface 8 and the sealing prevention layer 9. Resins 10 are provided outside both the organic diffusion particles 11 and the inorganic diffusion particles 12.

[0029] Specifically, by adding organic diffusion particles 11 and inorganic diffusion particles 12 to the PET film layer 2, the two can be used in combination to achieve a light diffusion effect, enabling light to be scattered when passing through the PET film layer 2, thereby providing a more uniform and soft light distribution. The resin 10 is coated on the organic diffusion particles 11 and the inorganic diffusion particles 12, which can not only protect the particle fillers, improve the overall scratch resistance performance, but also optimize the light diffusion effect and improve the hand feeling. The PET material itself also has a certain scratch resistance performance, thereby obtaining a composite film product with good scratch resistance and light diffusion effect.

[0030] Among them, the organic diffusion particles 11 are composed of polymer microsphere materials, and the inorganic diffusion particles 12 are composed of silica materials. In this way, the polymer microspheres have controllable particle sizes and distributions, and can provide different light diffusion effects and haze. The silica particles have good optical properties and stability, and they can be evenly dispersed in the PET film layer 2 to effectively scatter light and achieve the light diffusion effect.

[0031] Among them, the PC film layer 1, the PET film layer 2, and the PU film layer 3 have the same thickness, and the first adhesive layer 4 and the second adhesive layer 5 have the same thickness. In this way, the consistent thickness makes the overall composite film body more beautiful, and the size of the thickness can be customized and optimized according to specific application scenarios and requirements.

[0032] Among them, the PC film layer 1, the PET film layer 2, and the PU film layer 3 are used in combination. In this way, the PC film layer 1 is used as the upper surface layer of the composite film body to increase the overall scratch resistance. PET is a commonly used transparent plastic material that provides basic physical properties and transparency. PU is an elastic material used as the lower surface layer of the composite film body, which has good wear resistance and scratch resistance. The PC film layer 1, the PET film layer 2, and the PU film layer 3 are all high-performance thin film materials, and they each have unique physical and chemical properties, which can provide the strength, scratch resistance, and flexibility required by the composite film body.

[0033] Working principle: When in use, the composite film body is composed of the PC film layer 1, the first adhesive layer 4, the PET film layer 2, the second adhesive layer 5, the PU film layer 3, the functional coating 6, and the nano coating 7. The PC film layer 1 and the PET film layer 2 are bonded together through the first adhesive layer 4, and the PET film layer 2 and the PU film layer 3 are bonded together through the second adhesive layer 5. The functional coating 6 is coated on the upper and lower surfaces of the inner film structure, and the nano coating 7 is coated around the composite film body, making the composite film body have excellent scratch resistance and wear resistance. By adding organic diffusion particles 11 and inorganic diffusion particles 12 to the PET film layer 2, the light diffusion effect can be achieved. The resin 10 is coated on the organic diffusion particles 11 and the inorganic diffusion particles 12, which can not only protect the particle fillers, improve the overall scratch resistance performance, but also optimize the light diffusion effect and improve the hand feeling. Combining with the scratch resistance performance of the PET material itself, a composite film product with good scratch resistance and light diffusion effect can be obtained.

[0034] As described above, it is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. The substitution may be the substitution of part of the structure, device, and method steps, or a complete technical solution. Any equivalent substitution or change made according to the technical solution of the present invention and its inventive concept should be covered within the protection scope of the present invention.

Claims

1. A composite film with a scratch-resistant feel, comprising a composite film body, wherein the composite film body is composed of an inner film structure and a film layer structure, characterized in that: The inner film structure comprises a PC film layer (1), a first adhesive layer (4), a PET film layer (2), a second adhesive layer (5) and a PU film layer (3) which are arranged in sequence from top to bottom; the film layer structure comprises two functional coatings (6) and a nano coating (7); the inner film structure is located inside the film layer structure; the PET film layer (2) comprises a light diffusion surface (8), a PET substrate (13) and a sealing prevention layer (9); a plurality of organic diffusion particles (11) and inorganic diffusion particles (12) are respectively arranged inside the light diffusion surface (8) and the sealing prevention layer (9); and resin (10) is arranged outside the organic diffusion particles (11) and the inorganic diffusion particles (12).

2. The composite film having a scratch-resistant feel according to claim 1, characterized in that: The first adhesive layer (4) is used to bond the PC film layer (1) and the PET film layer (2), and the second adhesive layer (5) is used to bond the PET film layer (2) and the PU film layer (3).

3. The composite film having a scratch-resistant feel according to claim 2, characterized in that: The functional coating (6) is a scratch-resistant coating, and the two functional coatings (6) are respectively located on the upper surface of the PC film layer (1) and the lower surface of the PU film layer (3).

4. The composite film having a scratch-resistant feel according to claim 3, characterized in that: The nano coating (7) is used to be applied around the inner membrane structure, and the inner membrane structure and the two functional coatings (6) are both located inside the nano coating (7).

5. The composite film having a scratch-resistant feel according to claim 1, characterized in that: The organic diffusion particles (11) are composed of polymer microsphere materials, and the inorganic diffusion particles (12) are composed of silicon dioxide materials.

6. The composite film having a scratch-resistant feel according to claim 2, characterized in that: The PC film layer (1), the PET film layer (2) and the PU film layer (3) have the same thickness, and the first adhesive layer (4) and the second adhesive layer (5) have the same thickness.

7. The composite film having a scratch-resistant feel according to claim 6, characterized in that: The PC film layer (1), the PET film layer (2) and the PU film layer (3) are used in combination.

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