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Single-face or double-face optical hardening composite membrane and preparation method thereof

A composite film, single-sided technology, applied in chemical instruments and methods, optics, optical components, etc., can solve the problems of complex production and processing of optically hardened composite films, environmental impact, low light transmittance, etc.

Active Publication Date: 2014-12-24
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

[0004] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art, especially the complex production and processing of optically hardened composite films for touch screens, environmental impact, low light transmittance, high haze, etc. Single-sided or double-sided optical hardening composite film with good performance and good performance and preparation method thereof

Method used

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  • Single-face or double-face optical hardening composite membrane and preparation method thereof
  • Single-face or double-face optical hardening composite membrane and preparation method thereof
  • Single-face or double-face optical hardening composite membrane and preparation method thereof

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Experimental program
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Effect test

Embodiment 1-1A～1-5A

[0053] The composition and dosage of A-layer film mixture (hereinafter referred to as "A-layer material") 1-1A~1-5A are as follows:

[0054]

Embodiment 1-1B～1-5B

[0056] The composition and dosage of B-layer film mixture (hereinafter referred to as "B-layer material") 1-1B~1-5B are as follows:

[0057]

[0058] Part II Preparation of Hardened Resin Coating Solution

[0059] Basic process:

[0060] In a preparation container that can be weighed, add 40 to 75 parts by weight of an aqueous emulsion containing 35% polyurethane under stirring, and after stirring for 30 minutes, add a very small amount of pH regulator triethylamine dropwise to make the aqueous emulsion containing 35% polyurethane pH=9.5, under stirring, add 0.5-4 parts by weight of nano silica sol, 0.5-1.5 parts by weight of surfactant, 0.1-0.5 parts by weight of leveling agent, 0.1-0.5 parts by weight of defoamer, 1-8 parts by weight of light Initiator, 0.1-0.8 parts by weight of anti-yellowing agent, finally add 1-8 parts by weight of active diluent, then add deionized water until the total material reaches 100 parts by weight, add a very small amount of triethylamine d...

Embodiment 2-1

[0062] Formula 1 of the hardening resin coating liquid of the present invention (the viscosity of the 1# hardening resin coating liquid is 72mPa·s at 25°C):

[0063]

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Abstract

The invention discloses a single-face or double-face optical hardening composite membrane. The single-face or double-face optical hardening composite membrane is characterized by being composed of a base membrane and hardening resin coatings, wherein the hardening resin coatings are applied and solidified to single face or double faces of the base membrane, the base membrane is a two-way-stretched optical A-layer and B-layer composite membrane or A-layer B-layer and A-layer composite membrane, the thickness of the base membrane is 100 to 250 microns, and the thickness of each coating is 1 to 10 microns. A preparation method comprises the steps of performing melting casting and longitudinal drawing on polyester chips respectively by a No.1 extruder and a No.2 extruder so as to form blank sheets, then applying hardening resin coating liquid to the surfaces of the blank sheets, drying, horizontally drawing, performing heat setting, and solidifying by ultraviolet light so as to obtain the single-face or double-face optical hardening composite membrane, wherein the hardening resin coating liquid is composed of an aqueous emulsion containing 35% of polyurethane, nano-silica sol, a surface active agent, a flatting agent, a defoaming agent, a photoinitiator and an anti-yellowing agent. According to the single-face or double-face optical hardening composite membrane, one-step processing is adopted, and the prepared single-face or double-face optical hardening composite membrane is suitable for the field of touch displays.

Description

technical field [0001] The invention belongs to an optical surface hardening composite film and its manufacture, and relates to a single-sided or double-sided (or called single / double-sided) optical hardening composite film and a preparation method thereof. The present invention adopts the prepared coating glue (i.e. hardening resin coating solution) to process single-sided or double-sided optically hardened composite film in one step, and the prepared single-sided or double-sided optically hardened composite film is mainly used in the field of touch displays . Background technique [0002] In recent years, with the rapid development of large touch screens and flexible displays, hardened polyester film has been widely used as an indispensable material, not only as a protective material to prevent scratches on the display screen, but also as a structural material for displays . Mainly adopt a kind of ultraviolet light (UV) curing resin to be coated on optical polyester film...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/36B32B27/40B32B37/15B32B38/16G02B1/10
Inventor 李明勇韩崇涛王明李建学
Owner 四川东方绝缘材料股份有限公司
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