Anti-scratch composite film

Abstract

The utility model discloses an anti-scratch composite film which comprises a front diffusion layer, a first base material layer PET (polyethylene terephthalate), an acrylic adhesive layer, a prism film layer, a second base material layer PET and a bottom anti-sticking layer which are sequentially attached and connected from top to bottom, and the surface of the front diffusion layer is coated with modified thermosetting soft PU (polyurethane) resin and is filled with PBMA (polybutylene glycol methacrylate) particles. The PBMA particles enable the surface of the front diffusion layer to form an uneven structure, and the roughness Ra of the surface of the front diffusion layer is 1.705-1.799 and the roughness Rz of the surface of the front diffusion layer is 12.763-13.488. According to the utility model, the surface scratch is improved by controlling the surface roughness.

Description

Technical Field

[0001] The utility model relates to a film material, in particular to an anti-scratch composite film. Background Art

[0002] The DOP film and the polarizer under the O / C screen with a hardness between 6B~B are easy to be scratched. The two will contact and displace after being assembled into a complete machine. The film and glass are fixed, and the displacement is small, so it appears in a dotted state. The hardness of the polarizer under the O / C screen is between 6B~B, and the upper surface hardness of the DOP composite film is H~2H. It is speculated that the lower polarizer of the glass is softer and rubs against the particles of the DOP composite film, and both the particles and the lower polarizer are damaged; the upper diffusion film of the DOP composite film will frequently contact, adsorb, and separate from the glass surface during the online flow process. The hardness of the two materials themselves is different, which can easily cause the glass surface and the diffusion surface to be worn. The DOP film uses medium particles with average roughness, a large contact area with the polarizer, and is easy to be adsorbed. When there is relative displacement between the two, it is easy to cause scratches. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an anti-scratch composite film.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The invention discloses an anti-scratch composite film, comprising a front diffusion layer, a first substrate layer PET, an acrylic adhesive layer, a prism film layer, a second substrate layer PET and a bottom anti-sticking layer which are sequentially bonded and connected from top to bottom. The surface of the front diffusion layer is coated with a modified thermosetting soft PU resin and filled with PBMA particles. The PBMA particles form an uneven structure on the surface of the front diffusion layer. The roughness of the surface of the front diffusion layer is Ra: 1.705-1.799 and Rz: 12.763-13.488.

[0006] The diameter of the PBMA particles is between 2 and 25 microns.

[0007] The thickness of the first substrate layer PET is 100-125 microns.

[0008] The thickness of the second substrate layer PET is 100-125 microns.

[0009] The thickness of the acrylic adhesive layer is 15-25 microns.

[0010] Particles are arranged on the surface of the bottom anti-sticking layer, and the particles make the surface of the bottom anti-sticking layer present an uneven structure.

[0011] The prism film layer includes a plurality of prism units, each of which has a pointed top. The top of the prism unit is bonded to the acrylic adhesive layer, and the bottom of the prism unit is bonded to the second substrate layer PET.

[0012] The angle formed by the top tip of the prism unit is an acute angle.

[0013] The thickness of the front diffusion layer is 17-23 microns.

[0014] The utility model increases the roughness of the diffusion layer surface and the particle size, plays a role in improving the scratch of the POL, and is not prone to abrasion problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model. DETAILED DESCRIPTION

[0016] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0017] In the description of the present utility model, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like are involved, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0018] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0019] like Figure 1 As shown, the utility model discloses an anti-scratch composite film, including a front diffusion layer 1, a first substrate layer PET 2, an acrylic adhesive layer 3, a prism film layer 4, a second substrate layer PET 5 and a bottom anti-sticking layer 6 which are sequentially attached and connected from top to bottom, forming a six-layer structure as a whole, and the surface of the front diffusion layer 1 is coated with a modified thermosetting soft PU resin and filled with PBMA particles 7, and the PBMA particles 7 make the surface of the front diffusion layer 1 form an uneven structure, and the surface roughness of the front diffusion layer 1 is Ra: 1.705~1.799 and Rz: 12.763~13.488. For the modified thermosetting soft PU resin, various models of products in the prior art can be selected, such as PU2509T modified polyester resin.

[0020] The diameter of the PBMA particles 7 is 2-25 microns. Increasing the size of the particles can increase the unevenness of the surface of the front diffusion layer, thereby increasing the roughness, having a greater roughness, improving the wear resistance, and improving the POL scratch. The acrylic adhesive layer is a glue layer, which plays a bonding role.

[0021] The thickness of the first substrate layer PET 2 is 100-125 microns. The thickness of the second substrate layer PET 5 is 100-125 microns, which is relatively thick and plays a role in the main body strength. The thickness of the front diffusion layer is 17-23 microns.

[0022] The acrylic adhesive layer 3 has a thickness of 15-25 microns and is used to connect the first substrate layer PET and the prism film layer.

[0023] The surface of the bottom anti-adhesion layer 6 is provided with particles, which make the surface of the bottom anti-adhesion layer present an uneven structure. The bottom anti-adhesion layer can prevent adhesion and anti-static function with the bottom film, diffusion plate or light guide plate.

[0024] The prism film layer includes a plurality of prism units, each of which has a pointed top structure. The top of the prism unit is bonded to the acrylic adhesive layer, and the bottom of the prism unit is bonded to the second substrate layer PET. The angle formed by the tip of the top of the prism unit is an acute angle. The prism film layer can make light more concentrated and improve the light effect.

[0025] In the utility model, the front diffusion layer can play the role of anti-scratch and blemish protection by adding modified thermosetting soft PU resin and increasing particles with a certain diameter. The first substrate layer PET and the second substrate layer PET both play the role of anti-wrinkle and enhancing flatness. The prism mainly plays the role of improving light effect and increasing brightness. The bottom coating mainly plays the role of anti-adhesion and anti-static.

[0026] It should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-scratch composite film, characterized in that: The invention comprises a front diffusion layer, a first substrate layer PET, an acrylic adhesive layer, a prism film layer, a second substrate layer PET and a bottom anti-sticking layer which are sequentially bonded and connected from top to bottom. The surface of the front diffusion layer is coated with a modified thermosetting soft PU resin and filled with PBMA particles. The PBMA particles form an uneven structure on the surface of the front diffusion layer. The roughness of the surface of the front diffusion layer is Ra: 1.705-1.799 and Rz: 12.763-13.

488.

2. The anti-scratch composite film according to claim 1, characterized in that: The diameter of the PBMA particles is between 2 and 25 microns.

3. The anti-scratch composite film according to claim 1, characterized in that: The thickness of the first substrate layer PET is 100-125 microns.

4. The anti-scratch composite film according to claim 1, characterized in that: The thickness of the second substrate layer PET is 100-125 microns.

5. The anti-scratch composite film according to claim 1, characterized in that: The thickness of the acrylic adhesive layer is 15-25 microns.

6. The anti-scratch composite film according to claim 1, characterized in that: Particles are arranged on the surface of the bottom anti-sticking layer, and the particles make the surface of the bottom anti-sticking layer present an uneven structure.

7. The anti-scratch composite film according to claim 1, characterized in that: The prism film layer includes a plurality of prism units, each of which has a pointed top. The top of the prism unit is bonded to the acrylic adhesive layer, and the bottom of the prism unit is bonded to the second substrate layer PET.

8. The anti-scratch composite film according to claim 7, characterized in that: The angle formed by the top tip of the prism unit is an acute angle.

9. The anti-scratch composite film according to claim 1, characterized in that: The thickness of the front diffusion layer is 17-23 microns.

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