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Scratch-resistant optical diffusion film and method for manufacturing same

An optical diffusion and anti-scratch technology, applied in the direction of optics, optical components, instruments, etc., to achieve the effects of increasing diffusion efficiency, high light transmittance, and high light transmittance

Active Publication Date: 2015-02-25
四川东方绝缘材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art, in order to solve the quality, environment and health problems in the production of the existing optical diffusion film, to provide a kind of anti-scratch optical diffusion film and its preparation method

Method used

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  • Scratch-resistant optical diffusion film and method for manufacturing same
  • Scratch-resistant optical diffusion film and method for manufacturing same
  • Scratch-resistant optical diffusion film and method for manufacturing same

Examples

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Embodiment 1-1～1-15

[0040] The percentages of materials in the following examples are all mass percentages, and the materials used are polyethylene terephthalate chips, acrylic resins, acrylic particles, polystyrene particles, silicon dioxide particles, and siloxane particles. Commonly used common products, no special requirements.

Embodiment 1-1

[0042] Mix 95% of polyethylene terephthalate chips and 5% of acrylic resin in a silo evenly, after dehydration and drying, melt and extrude pellets at 285°C through a twin-screw extruder to produce into a scratch-resistant layer of material, spare.

[0043] Mix 95% polyethylene terephthalate chips and 5% acrylic particles with an average diameter (average diameter) of 2 μm in the silo, and after dehydration and drying, pass through a twin-screw extruder at 285 ° C Melt extrusion and granulation to make diffusion layer material for standby.

Embodiment 1-2

[0045] Mix 90% of polyethylene terephthalate chips and 10% of acrylic resin in a silo evenly, after dehydration and drying, melt and extrude pellets at 280°C through a twin-screw extruder to produce into a scratch-resistant layer of material, spare.

[0046] Mix 92% of polyethylene terephthalate chips and 8% of acrylic particles with an average diameter of 8 μm in the silo, and after dehydration and drying, melt extrusion at 280 ° C through a twin-screw extruder to produce Granules, made into diffusion layer material, for later use.

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Abstract

The invention discloses a scratch-resistant optical diffusion film and a method for manufacturing the same. The scratch-resistant optical diffusion film comprises a first scratch-resistant layer, a first diffusion layer, a core layer, a second diffusion layer and a second scratch-resistant layer which are sequentially arranged and are compounded with one another. The thickness of the first diffusion layer is identical to that of the second diffusion layer, and the thickness of the first scratch-resistant layer is identical to that of the second scratch-resistant layer; the total thickness of the scratch-resistant optical diffusion film ranges from 0.050mm to 0.350mm; the scratch-resistant layers are made of polyester and scratch-resistant hard resin; the diffusion layers are made of polyester and diffusion particles; the core layer is made of polyethylene terephthalate. The method includes performing five-layer co-extrusion on the scratch-resistant layers, the diffusion layers and the core layer; manufacturing the scratch-resistant optical diffusion film by means of two-way stretching. The scratch-resistant optical diffusion film and the method have the advantages that the light transmittance of the manufactured scratch-resistant optical diffusion film is higher than or equal to 90%, the haze of the manufactured scratch-resistant optical diffusion film is higher than or equal to 90%, and the hardness of the manufactured scratch-resistant optical diffusion film is higher than or equal to 3H; the scratch-resistant optical diffusion film can be widely applied to manufacturing devices such as liquid crystal display and back light module components, advertising lamp boxes and illuminating lamps.

Description

technical field [0001] The invention belongs to an optical film and its preparation, and relates to a scratch-resistant optical diffusion film and a preparation method thereof. The anti-scratch optical diffusion film of the present invention is suitable as an optical diffusion material in devices requiring light sources such as liquid crystal displays, backlight module components, advertising light boxes, and lighting fixtures. Background technique [0002] Optical diffusion film (also known as optical diffusion film, light diffusion film, referred to as diffusion film) is widely used in liquid crystal displays, advertising light boxes, lighting fixtures and other devices that require light sources, especially in liquid crystal display devices, the diffusion film is the backlight module key components in the. The main function of the optical diffusion film is to increase the brightness of the light, soften and diffuse the light received by the light guide plate, provide a u...

Claims

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Application Information

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IPC IPC(8): G02B5/02G02B1/10G02B1/04
CPCG02B1/04G02B5/0242G02B5/0268
Inventor 孙囡周柯梁倩倩罗春明胡俊祥
Owner 四川东方绝缘材料股份有限公司
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