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Non-coating type diffuse reflection film and manufacturing method thereof

A reflective film and functional masterbatch technology, which is applied in nonlinear optics, optics, instruments, etc., can solve problems such as light shadows, and achieve good market prospects, high reflectivity, and strong competitiveness.

Active Publication Date: 2017-06-30
NINGBO CHANGYANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing short OD backlight module is prone to light shadows, the present invention provides a non-coating diffuse reflective reflective film and its preparation method

Method used

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  • Non-coating type diffuse reflection film and manufacturing method thereof
  • Non-coating type diffuse reflection film and manufacturing method thereof

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preparation example Construction

[0040] The preparation method of the non-coating diffuse reflective reflective film provided by the invention comprises the following steps:

[0041] The preparation method comprises the following steps: (1) granulation: uniformly mix polyester resin, inorganic particles and antistatic agent and carry out kneading and granulation to obtain polyester functional masterbatch A; polyester resin, incompatible resin, Toughening resin, chain extender, nucleating agent, antioxidant and dispersant are mixed uniformly and mixed and granulated to obtain polyester functional masterbatch B; (2) cast sheet: polyester resin, polyester functional masterbatch A is mixed according to the proportion as layer A; polyester resin and polyester functional masterbatch B are mixed according to the proportion as layer B. Use two extruders to carry out ABA three-layer co-extrusion melt plasticization, cast cast sheet; (3) Stretch into film: carry out longitudinal stretching, transverse stretching, heat ...

Embodiment 1

[0047] Prepare non-coating diffuse reflective reflective film according to the above method, functional masterbatch A is 94.5% PET chips (intrinsic viscosity 0.68dL / g), 5% silicon dioxide (6.0 μm particle size) and 0.5% ethoxylated laurel amides. Functional masterbatch B is 80.5% PET chips (intrinsic viscosity 0.68dL / g), 10% polymethylpentene, 5% MAH grafted SEBS (grafting rate ≥ 0.5%), 2% BDO, 0.5% 2,2 - sodium methylene-bis(4,6-di-tert-butylphenyl) phosphate, 0.5% antioxidant 1010, 0.5% polytetrahydrofuran ether (molecular weight 2000). Among them, functional masterbatch A accounts for 90% of layer A, and PET chips account for 10% of layer A; functional masterbatch B accounts for 50% of layer B, and layer B of PET chips accounts for 50%. The resulting reflective film had a thickness of 188 μm, wherein the thickness of one layer A accounted for 6% of the thickness of the reflective film, and the thickness of the B layer accounted for 88% of the thickness of the reflective fi...

Embodiment 2

[0049] Prepare non-coating diffuse reflective reflective film according to the above method, functional masterbatch A is 89.5% PET chip (intrinsic viscosity 0.68dL / g), 10% calcium carbonate (particle size 1.0 μm) and 0.5% sodium alkylsulfonate . Functional masterbatch B is 78.8% PET chips (intrinsic viscosity 0.68dL / g), 15% cycloolefin copolymer, 3% MAH grafted with POE (grafting rate ≥ 0.5%), 1% 1,6-hexanediol, 1% 1,3:2,4-bis(3,4-dimethyl)benzylidene sorbitol acetal, 1% antioxidant 168, 0.2% polyethylene wax. Among them, functional masterbatch A accounts for 95% of layer A, PET chips account for 5% of layer A; functional masterbatch B accounts for 60% of layer B, and PET chips account for 40% of layer B. The resulting reflective film had a thickness of 188 μm, wherein the thickness of one layer A accounted for 5% of the thickness of the reflective film, and the thickness of the B layer accounted for 90% of the thickness of the reflective film. The related properties of the ...

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Abstract

The invention relates to a reflection film, and in more detail, to a non-coating type diffuse reflection film and the manufacturing method thereof to solve the problem in the prior art that the current short OD backlight module is likely to experience light shadows. The invention therefore, provides a non-coating type diffuse reflection film and the manufacturing method thereof. The reflection film comprises an ABA three-layer co-extruded structure wherein the materials for the layer A include polyester, inorganic particles and antistatic agents, the layer B includes polyester, incompatible resin, toughening resin, chain extenders, nucleating agents, antioxidant and dispersant. The reflection film of the invention achieves a good light shadow reducing effect and boasts low glossiness and high reflectivity. Compared with a coating type reflection film, the reflection film of the invention can be processed with simple technology and at a low cost. The comprehensive performances are, however, good.

Description

technical field [0001] The present invention relates to a reflective film, in particular, to a reflective film suitable for a surface light source and a preparation method thereof, and in more detail, to a non-coating diffuse reflective reflective film and a preparation method thereof. Background technique [0002] In recent years, display screens using liquid crystals have been widely used as display devices for personal computers, televisions, mobile phones, and the like. These liquid crystal displays (LCDs) can display by providing illumination light from a surface light source called a backlight inside. In order to meet the requirement that the entire screen must be illuminated evenly, the backlight adopts a surface light source structure called a side-light type or a direct-light type. Among them, the direct type is to arrange the LED light-emitting crystals evenly behind the LCD panel as a light source, so that the backlight can be evenly transmitted to the entire scr...

Claims

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Application Information

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IPC IPC(8): G02B5/08G02F1/13357
CPCG02B5/0841G02F1/1336
Inventor 金亚东周玉波
Owner NINGBO CHANGYANG TECH
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