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A kind of 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: 2022-03-01
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 method for preparing matte PET release paper. First, fast-growing pine wood is used to obtain glassine base paper through the steps of pulp preparation, papermaking, and paper forming, and then a layer of PET film is coated on the upper and lower surfaces of the glassine base paper. Then, one side of the PET film is coated with a layer of matte agent, and the other side is coated with a layer of release agent to obtain a matte PET release paper. The matte PET release paper of the present invention not only has a very good absorption effect on ultraviolet light by adding zirconium dioxide, silicon dioxide and ultraviolet light absorbing agent to the matte agent, but also micron-sized zirconium dioxide and silicon dioxide It has a very good refraction effect on ultraviolet rays of different wavelengths, so the obtained matte PET release paper has a very good matte effect. The matte PET release paper prepared by the invention not only has a good matte effect, but also prevents the release agent on the release surface from being easily transferred to the matte surface after curling, and does not cause local sagging.

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 Patents(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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