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Preparing method of hard coating film

A technology for a hardened film and a manufacturing method, applied in the field of plastic film materials, can solve the problems of agglomeration of matting agents, deterioration of film appearance, increase in cost, etc., and achieve the effects of reducing rainbow patterns and improving fastness

Inactive Publication Date: 2012-06-20
HEFEI LUCKY SCI & TECH IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the polyester film is subjected to transparent UV hardening treatment, the surface will produce interference rainbow patterns. This interference rainbow pattern will easily make the eyes of the observer or user feel tired. In order to eliminate or reduce the generation of rainbow patterns, people have proposed Add matting agent to the surface of the film or set fine-grained unevenness on the surface of the film, but these two methods have the following disadvantages: 1. After adding the matting agent, the appearance of the film will deteriorate due to the easy aggregation of the matting agent ; 2. It is necessary to increase the pressure roller equipment to set the fine-grained unevenness on the surface of the film, and the equipment needs frequent maintenance to ensure that it can produce stable fine-grained unevenness, which causes the production process of the film to be complicated and the cost of the film to increase
In addition, in the past preparation process of the hardened film, the bottom layer and the hardened layer on the surface of the support were coated and cured separately, that is, the bottom layer was coated first, and then the hardened layer was coated after the bottom layer was completely cured. The bonding fastness between the bottom layer and the hardened layer is low, and the interface between the layers is obvious, making it easier to produce rainbow patterns on the surface of the film

Method used

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  • Preparing method of hard coating film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The surface of polyethylene terephthalate film (PET) is subjected to corona treatment; then a polyacrylate resin coating solution with a solid content of 5% is coated on the surface, and heated at 60°C for semi-curing to form a thickness It is a semi-cured easy-adhesive resin layer of 0.03 microns; on the above-mentioned semi-cured easy-adhesive resin layer, acrylic resin hardening coating solution with a solid content of 25% is coated; The resin layer and the acrylic resin hardened coating solution were completely cured at the same time, the thickness of the hardened layer was 1 micron, and rolled to obtain a hardened film, and its performance was measured.

Embodiment 2

[0030] Corona treatment was performed on the surface of polyethylene terephthalate film (PET), and then a modified polyurethane coating solution with a solid content of 8% was coated on the surface, and semi-cured by heating at 100°C to form a thickness of 0.1 micron semi-cured easy-adhesive resin layer; on the above-mentioned semi-cured easy-adhesive resin layer, coat a polyurethane acrylate hardening coating solution with a solid content of 30%; The resin layer and the urethane acrylate hardening coating solution were completely cured at the same time, and the thickness of the hardened layer was 15 microns, and rolled up to obtain a hardened film, and its performance was measured.

Embodiment 3

[0032] The surface of polyethylene terephthalate film (PET) is subjected to corona treatment, and then coated with a polyvinylidene chloride resin coating solution with a solid content of 10% on the surface, and heated at 70°C for semi-curing. Form a semi-cured and easy-to-adhesive resin layer with a thickness of 0.5 microns; coat a polyester acrylate hardening coating solution with a solid content of 33% on the above-mentioned semi-cured and easily-adhesive resin layer; The semi-cured and easy-adhesive resin layer and the polyester acrylate hardened coating solution are completely cured at the same time, the thickness of the hardened layer is 3 microns, rolled up to obtain a hardened film, and its performance is measured.

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Abstract

A preparing method of a hard coating film comprises the following steps of coating easy-to-adhere resin on the surface of a support body, and enabling the easy-to-adhere resin to become a half solidified easy-to-adhere resin layer through an ultraviolet method or a heating method; coating hardened resin on the half solidified easy-to-adhere resin layer; and simultaneously and completely solidifying the half solidified easy-to-adhere resin layer and the hardened resin. By adopting the hard coating film, rainbow lines on a film surface are obviously reduced, and interlayer adhesive force is obviously improved.

Description

technical field [0001] The invention relates to the field of plastic film materials, in particular to a method for preparing a hardened film. Background technique [0002] With the rapid development of consumer electronics, transparent hardened films are widely used in the display device industry and in-mold decoration (IMD) fields, such as various optical components in PCs, TVs, video games, mobile phones, aerospace and automotive industries. In-mold decorative nameplates such as display devices and membrane switches were originally mainly used to prevent the surface of the device from being scratched or dust pollution marks. Today, touch panels are more and more widely used in people's lives, such as Iphone touch mobile phones, Ipad touch computers and so on. [0003] When the polyester film is subjected to transparent UV hardening treatment, the surface will produce interference rainbow patterns. This interference rainbow pattern will easily make the eyes of the observer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B37/15B32B38/16
Inventor 霍新莉王旭亮赵保良
Owner HEFEI LUCKY SCI & TECH IND