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Preparation method of matte PET release paper

A release paper and matte technology, applied in the field of release paper, can solve the problems of insufficient corona value and poor adsorption effect of the release agent, and achieve good absorption effect, good matte effect and good refraction effect. Effect

Active Publication Date: 2020-03-24
江苏双冠新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] After corona on the surface of traditional glossy PET, the corona value is insufficient, so the adsorption effect on the release agent is not very good, and if the surface is scratched, it will have a great impact on the appearance, so it is necessary to study a matte PET release agent. Preparation method of pattern paper

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation method for matte PET release paper, comprising the following steps:

[0025] A. Fast-growing pine wood is directly shaved without peeling and then subjected to sulfite cooking and pulping. After DQP three-stage chlorine-free bleaching and washing, electronic-grade pulp with a whiteness of 80.5% is obtained. A beater is used at a temperature of 2.0%. Beat the pulp to 43.5°SR at the pulp concentration, and the wet weight of the pulp is 7.2g;

[0026] B, slurry preparation: add 11.5% calcium carbonate to the slurry prepared in step A and carry out slurry allocation in the slurry mixing tank;

[0027] C, papermaking: papermaking is carried out on the fourdrinier paper machine to obtain wet paper web after being diluted to a concentration of 0.9% by white water flushing;

[0028] D. Finished paper: glassine base paper is obtained through pressing section, front drying section, sizing, post drying section, calendering, coiling, and slitting;

[0029] E. Coatin...

Embodiment 2

[0040] A preparation method for matte PET release paper, comprising the following steps:

[0041] A. The fast-growing pine wood is directly shaved without peeling, and then subjected to sulfite cooking and pulping. After DQP three-stage chlorine-free bleaching and washing, an electronic-grade pulp with a whiteness of 86% is obtained. The beater is used at 1.5-3 % beating to 42°SR under the pulp concentration, the wet weight of slurry is 9g;

[0042] B, slurry preparation: add 15% calcium carbonate to the slurry prepared in step A and carry out slurry allocation in the slurry mixing tank;

[0043] C, papermaking: papermaking is carried out on the fourdrinier paper machine to obtain wet paper web after being diluted to a concentration of 0.8% by white water flushing;

[0044] D. Finished paper: glassine base paper is obtained through pressing section, front drying section, sizing, post drying section, calendering, coiling, and slitting;

[0045] E. Coating a layer of PET film ...

Embodiment 3

[0055] A preparation method for matte PET release paper, comprising the following steps:

[0056] A. Fast-growing pine wood is directly shaved without peeling and then sulfite cooking and pulping is carried out. After DQP three-stage chlorine-free bleaching and washing, electronic-grade pulp with a whiteness of 78% is obtained. A beater is used at a temperature of 3%. Beat the pulp to 42°SR at the pulp concentration, and the wet weight of the pulp is 9g;

[0057] B, slurry preparation: the slurry prepared in the step A is added with 10% calcium carbonate in the slurry mixing tank;

[0058] C, papermaking: papermaking is carried out on the fourdrinier paper machine to obtain wet paper web after being diluted to a concentration of 0.8% by white water flushing;

[0059] D. Finished paper: glassine base paper is obtained through pressing section, front drying section, sizing, post drying section, calendering, coiling, and slitting;

[0060]E. Coating a layer of PET film on the u...

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Abstract

The invention discloses a preparation method of matte PET release paper. The preparation method includes: firstly, carrying out pulp blending, papermaking, paper forming and other steps on fast-growing pine to obtain glassine base paper, then laminating a layer of PET film respectively on the upper surface and lower surface of the glassine base paper, then coating one side of the PET film with a layer of matte agent, and coating the other surface side of the PET film with a layer of release agent so as to obtain the matte PET release paper. According to the invention, by adding zirconium dioxide, silicon dioxide and an ultraviolet absorber into the matte agent, a very good absorption effect on ultraviolet rays can be achieved, also micron-sized zirconium dioxide and silicon dioxide have very good refraction effect on ultraviolet rays of different wavelengths, so that the obtained matte PET release paper has a very good matte effect. The matte PET release paper prepared by the preparation method disclosed by the invention has a good matte effect, and also after curling, the release agent on the release surface does not easily transfer to the matte surface, and local sagging phenomenon cannot be caused.

Description

technical field [0001] The invention relates to the technical field of release paper, in particular to a method for preparing a matte PET release paper. Background technique [0002] Release paper, also known as release paper and anti-adhesive paper, is mainly pasted on the surface of the tape to protect the adhesive layer on the surface of the tape. The traditional release paper is composed of base paper, isolation layer and anti-adhesive layer. Its preparation process is to coat a layer of release agent (the release agent is mainly polyethylene) on the surface of the bottom paper of the release paper, and then coat a layer of anti-sticking agent (the anti-sticking agent is mainly silicone oil) on the surface of the coating layer to obtain Release paper. [0003] After corona on the surface of traditional glossy PET, the corona value is insufficient, so the adsorption effect on the release agent is not very good, and if the surface is scratched, it will have a great impac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/00D21H11/06D21H17/67D21H19/84D21H19/82D21H19/28D21H19/40D21H19/62D21H19/38D21H19/46D21H21/14D21H19/44
CPCD21H27/001D21H11/06D21H17/675D21H19/84D21H19/828D21H19/28D21H19/40D21H19/62D21H19/385D21H19/46D21H21/14D21H19/44
Inventor 安斌昌
Owner 江苏双冠新材料科技有限公司
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