A kind of preparation method of high-strength and low-static ctp plate backing paper

A low-static, paper-backed technology, applied in the field of papermaking, can solve the problems of poor moisture resistance and reduced tear resistance of the backing paper, and achieve high tear resistance, strong compactness and bonding ability, and simple and efficient preparation process. Effect

Active Publication Date: 2021-12-31
XIANHE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Its shortcoming is that the electrostatic properties of the printing plate backing paper are not controlled within the effective range, and the moisture resistance is poor. will significantly reduce

Method used

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  • A kind of preparation method of high-strength and low-static ctp plate backing paper

Examples

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Comparison scheme
Effect test

Embodiment 1

[0038] A preparation method of high-strength and low-static CTP plate backing paper, comprising the following preparation steps:

[0039] (1) Prepare slurry: mix and beat the raw material slurry and auxiliary agents to prepare a mixed slurry; the raw material slurry includes 30% bleached softwood pulp and 70% bleached hardwood pulp, and the pulp size is 35 ° SR, Wet weight 1.5g; additives and their dosages are: degassing agent, 0.5kg per ton of paper; cationic starch, 10kg per ton of paper;

[0040] (2) Pre-treatment of sizing: dehydrating the mixed slurry through the net part, pressing, and pre-drying to obtain raw paper;

[0041] (3) Sizing: enter the surface sizing treatment process, adopt aminocellulose-vermiculite modified styrene-acrylic emulsion to carry out surface sizing to the raw paper described in step (2), and obtain the paper sheet after surface sizing treatment ; The amount of paper per ton of aminocellulose-vermiculite modified styrene-acrylic emulsion is 18kg...

Embodiment 2

[0047] The difference from Example 1 is that a method for preparing a high-strength and low-static CTP plate backing paper includes the following preparation steps:

[0048] (1) Prepare slurry: mix and beat the raw material slurry and auxiliary agents to prepare a mixed slurry; the raw material slurry includes 20% bleached softwood pulp and 80% bleached hardwood pulp, and the pulp size is 38 ° SR, Wet weight 1.8g; additives and their dosages are: degassing agent, 0.6kg per ton of paper; cationic starch, 11kg per ton of paper;

[0049] (2) Pre-treatment of sizing: dehydrating the mixed slurry through the net part, pressing, and pre-drying to obtain raw paper;

[0050] (3) Sizing: enter the surface sizing treatment process, adopt aminocellulose-vermiculite modified styrene-acrylic emulsion to carry out surface sizing to the raw paper described in step (2), and obtain the paper sheet after surface sizing treatment ; The amount of paper per ton of aminocellulose-vermiculite modif...

Embodiment 3

[0056] The difference from Example 1 is that a method for preparing a high-strength and low-static CTP plate backing paper includes the following preparation steps:

[0057] (1) Prepare slurry: mix and beat the raw material slurry and auxiliary agents to form a mixed slurry; the raw material slurry includes 15% bleached softwood pulp and 85% bleached hardwood pulp, and the pulp size is 42 ° SR, Wet weight 2.0g; additives and their dosages are: degassing agent, 0.8kg per ton of paper; cationic starch, 13kg per ton of paper;

[0058] (2) Pre-treatment of sizing: dehydrating the mixed slurry through the net part, pressing, and pre-drying to obtain raw paper;

[0059] (3) Sizing: enter the surface sizing treatment process, adopt aminocellulose-vermiculite modified styrene-acrylic emulsion to carry out surface sizing to the raw paper described in step (2), and obtain the paper sheet after surface sizing treatment ; The amount of paper per ton of aminocellulose-vermiculite modified...

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Abstract

The invention relates to the technical field of papermaking. Aiming at the problems of not effectively controlling the static range and tensile strength of CTP plate interleaving paper, a preparation method of high-strength and low-static CTP plate interleaving paper is proposed. Including: (1) Preparation of slurry: mixing and beating raw material slurry and auxiliary agents to prepare slurry; (2) Pre-treatment of sizing: Dewatering, pressing and pre-drying the mixed slurry in sequence through the wire part to obtain raw materials (3) Sizing: enter the surface sizing treatment process, and use aminocellulose-vermiculite-modified styrene-acrylic emulsion to perform surface sizing on the raw paper described in step (2); (4) post-sizing treatment: After surface sizing, it is dried in sections, calendered, and rolled up. The CTP version of the backing paper has a suitable moisture content, which ensures that the surface of the backing paper has a certain amount of static electricity and has strong tear resistance. The backing paper has excellent waterproof effect, low stretch rate, high strength and small thickness difference , the preparation process is simple and efficient.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a preparation method of high-strength and low-static CTP plate backing paper. Background technique [0002] The CTP printing plate has been developed rapidly in China. The CTP plate backing paper is also called material interval paper. The main function of the CTP plate backing paper is to protect the photosensitive coating of the CTP plate. The main liner is between the CTP printing plates to prevent friction between layers. The damage to the photosensitive coating of the CTP plate also requires the backing paper itself to have better uniformity and mechanical properties. If the moisture content of the lining paper of the CTP plate is too low, it will easily generate more static electricity, which is not conducive to production operations. If the moisture content is too high, it will affect the photosensitive material coated on the CTP plate. The more water molecules the ba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H21/14D21H17/29D21H17/46D21H23/22D21H25/06
CPCD21H21/14D21H17/29D21H17/46D21H23/22D21H25/06
Inventor 戴贤中毛学米江理勇黄学英董金雨杨奎占
Owner XIANHE CO LTD
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