Preparation method of micro-structure coating reflecting film

Abstract

The invention discloses a preparation method of a micro-structure coating reflecting film. The preparation method comprises the following steps: S1, coating UV glue on the surface of a reflecting film base material; s2, baking the reflecting film base material coated with the UV glue in an oven at 120-125 DEG C; s3, the baked reflecting film base material and the diffusion film with the surface coated with the PVC particles are tightly attached through a composite roller; s4, irradiating the bonding part of the reflecting film base material and the diffusion film by using a UV lamp, and curing the UV glue layer, so that the PVC particles are adhered to the UV glue layer; and S5, rolling the reflecting film of which the surface is coated with the PVC particles.

Description

Technical Field

[0001] The invention relates to a method for preparing a reflective film. Background Art

[0002] In today's rapidly developing network information society, the importance of display screens as information display terminals is self-evident. Taking the current mainstream LCD panel as an example, the backlight module is one of the key components. The reflective film, brightening film, etc. contained in the backlight module are the most critical functional optical films. These films work together with components such as the light guide plate to achieve the redistribution of the light energy emitted by the light source to ensure that the backlight module can provide light evenly and efficiently, thereby improving the display effect. The reflective film is located on the back of the light guide plate to improve light utilization, reduce light loss, and ensure a more uniform backlight.

[0003] Although uncoated reflective film can enhance the backlight effect, it often has adsorption problems that lead to defects such as dark shadows. Therefore, the reflective film is often coated before being used in the backlight module of the screen. However, the traditional coating process requires glue and solvents to be fixed on the surface of the reflective film together with the coating particles. The components in the glue will affect the coating particles and other components in the coating layer, making the coating particles too hard or too soft, or even swelling; if the coated particles are too hard, they may scratch the light guide plate during the assembly of the backlight module, resulting in defects such as linear scratches after the backlight module is turned on; if the coated particles are too soft, the backlight module will also have a top white defect after being turned on due to excessive local pressure during transportation. Therefore, it is urgent to provide a reflective film whose coated particles will not be affected by other components during coating and use. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings of the existing reflective film, the present invention provides a method for preparing a microstructure coated reflective film. The prepared reflective film has an optical microstructure. Compared with the traditional coated reflective film, the reflective film has coated particles with higher elasticity on its surface, so that the reflective film has excellent scratch resistance and anti-whitening performance.

[0005] The technical solution of the present invention to solve the technical problem is: a method for preparing a microstructure coated reflective film, comprising the following steps: S1: coating the surface of the reflective film substrate with UV glue; S2: The reflective film substrate coated with UV glue is baked in an oven at 120°C-125°C; S3: The baked reflective film substrate and the diffusion film coated with PVC particles on the surface are tightly bonded together by a composite roller; S4: Use UV light to irradiate the bonding area between the reflective film substrate and the diffusion film, and the UV glue layer is cured, so that the PVC particles adhere to the UV glue layer; S5: The reflective film with PVC particles coated on the surface is rolled up.

[0006] Preferably, the particle size of the PVC particles is 35 μm, which is used for TV screens; or the particle size of the PVC particles is 5-10 μm, which is used for car screens.

[0007] Preferably, the layer thickness of the UV glue is 50 μm.

[0008] The beneficial effect of the present invention is that compared with the traditional coated reflective film, the reflective film prepared by the present invention has coated particles (ie, optical microstructures), ie, PVC particles, with higher elasticity on its surface, so that the reflective film has excellent scratch resistance and anti-whitening performance. DETAILED DESCRIPTION

[0009] The present invention is further described in detail below in conjunction with specific implementation modes.

[0010] A method for preparing a microstructure coated reflective film comprises the following steps: S1: coating the surface of the reflective film substrate with UV glue, the layer thickness of the UV glue is 50 μm; S2: The reflective film substrate coated with UV glue is baked in an oven at 120°C-125°C; S3: The baked reflective film substrate is tightly bonded to the diffusion film coated with PVC particles on the surface through a composite roller, wherein the particle size of the PVC particles is 35 μm, which is used for TV screens; or the particle size of the PVC particles is 5-10 μm, which is used for car screens; S4: Use UV light to irradiate the bonding area between the reflective film substrate and the diffusion film, and the UV glue layer is cured, so that the PVC particles adhere to the UV glue layer; S5: The reflective film with PVC particles coated on the surface is rolled up.

[0011] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0012] The above is an explanation of the embodiments of the present invention. However, the present invention is not limited to the above embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for preparing a microstructured coating reflective film, characterized in that The steps include: S1: coating the surface of the reflective film substrate with UV glue; S2: The reflective film substrate coated with UV glue is baked in an oven at 120°C-125°C; S3: The baked reflective film substrate and the diffusion film coated with PVC particles on the surface are tightly bonded together by a composite roller; S4: Use UV light to irradiate the bonding area between the reflective film substrate and the diffusion film, and the UV glue layer is cured, so that the PVC particles adhere to the UV glue layer; S5: The reflective film with PVC particles coated on the surface is rolled up.

2. The method for preparing a microstructure coated reflective film according to claim 1, characterized in that: The particle size of the PVC particles is 35 μm, or the particle size of the PVC particles is 5-10 μm.

3. The method for preparing a microstructure coated reflective film according to claim 1, characterized in that: The layer thickness of the UV glue is 50 μm.