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Method for producing computer-to-plate lining paper

A production method and computer technology, applied in papermaking, textiles and papermaking, adding inorganic compounds, etc., to achieve the effects of reducing production costs, reducing product costs, and saving production resources

Active Publication Date: 2011-10-19
ZHENJIANG DADONG PULP & PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the defect of using acid rosin glue sizing technology in the production of existing CTP plate backing paper, to provide a kind of application of cationic dispersing rosin glue, to change the cation dispersing rosin glue sizing process conditions, in the mixing pool The production method of adding the sizing agent aluminum sulfate to the outlet of the punching pump twice to keep the pH value of the water extraction of the CTP plate liner between 5.2-5.8

Method used

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  • Method for producing computer-to-plate lining paper
  • Method for producing computer-to-plate lining paper
  • Method for producing computer-to-plate lining paper

Examples

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Embodiment 1

[0031] Embodiment 1, the production method of CTP plate backing paper

[0032] The production method of the CTP plate backing paper of the present invention is adopted to produce the CTP plate backing paper, and the production capacity of the production device is 15t / d.

[0033] CTP liner paper is produced by ordinary 1880 fourdrinier multi-cylinder paper machine. The production process includes: beating, pulping, papermaking and surface sizing, calendering, rewinding to make base paper, and then subsequent calendering treatment Finished paper; the production of CTP liner paper uses pulp made of hardwood pulp and softwood pulp and chemical additives cationic starch, cationic dispersed rosin sizing agent, and aluminum sulfate as a sizing aid. Add sizing agent aluminum sulfate to the slurry tank and the outlet of the slurry pump in the papermaking process twice, and the main production control parameters are as follows:

[0034] (1) Proportioning by weight of mixed pulp:

[00...

Embodiment 2

[0055] Embodiment 2, the production method of CTP plate backing paper

[0056] The production method of the CTP plate backing paper of the present invention is adopted to produce the CTP plate backing paper, and the production capacity of the production device is 15t / d.

[0057] CTP liner paper is produced by ordinary 1880 fourdrinier multi-cylinder paper machine. The production process includes: beating, pulping, papermaking and surface sizing, calendering, rewinding to make base paper, and then subsequent calendering treatment Finished paper; the production of CTP liner paper uses pulp made of hardwood pulp and softwood pulp and chemical additives cationic starch, cationic dispersed rosin sizing agent, and aluminum sulfate as a sizing aid. Add sizing agent aluminum sulfate to the slurry tank and the outlet of the slurry pump in the papermaking process twice, and the main production control parameters are as follows:

[0058] (1) Proportioning by weight of mixed pulp:

[00...

Embodiment 3

[0074] Embodiment 3, the production method of CTP plate backing paper

[0075] The production method of the CTP plate backing paper of the present invention is adopted to produce the CTP plate backing paper, and the production capacity of the production device is 15t / d.

[0076] CTP liner paper is produced by ordinary 1880 fourdrinier multi-cylinder paper machine. The production process includes: beating, pulping, papermaking and surface sizing, calendering, rewinding to make base paper, and then subsequent calendering treatment Finished paper; the production of CTP liner paper uses pulp made of hardwood pulp and softwood pulp and chemical additives cationic starch, cationic dispersed rosin sizing agent, and aluminum sulfate as a sizing aid. Add sizing agent aluminum sulfate to the slurry tank and the outlet of the slurry pump in the papermaking process twice, and the main production control parameters are as follows:

[0077] (1) Proportioning by weight of mixed pulp:

[00...

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Abstract

The invention provides a method for producing computer-to-plate (CTP) lining paper, which is characterized in that: the lining paper is produced by using a common multi-cylinder long mesh paper machine, and the production process comprises the following steps: pulp beating, pulp proportioning, paper manufacturing with pulps, surface sizing, press polish and rewinding to produce base paper, then carrying out subsequent press polish treatment on the base paper to produce finished paper; the CTP lining paper is produced from paper pulps which are made of hardwood pulps and softwood pulps, chemical additive cationic starch, cationic dispersed rosin size and auxiliary sizing agent aluminum sulfate serving as raw materials. In the method, the cationic dispersed rosin size is used and the auxiliary sizing agent aluminum sulfate is added for two times on a proportioning pool and at an outlet of a fan pump, so that the problem of producing the CTP lining paper by using cationic dispersed rosinacid sizing technology is successfully solved. The pH value of the water extract of the produced base paper is kept within a range of 5.2 to 5.8, so that the key indicator of the paper, namely, the pH value of the water extract of the paper, meets the quality requirement on the CTP lining paper.

Description

technical field [0001] The invention relates to a method for producing paper, in particular to a method for producing a backing paper for computer-to-printing plate (hereinafter referred to as CTP plate, English full name Computer to plate). Background technique [0002] There are two types of sizing methods for existing paper: neutral sizing and acid sizing. Neutral sizing includes AKD (full name in English is Alkyl Ketene Dimen, that is, alkyl ketene dimer) sizing and ASA (full name in English is Alkenyl Succinic Anhydride, that is, alkyl succinic anhydride) sizing. And acid sizing is further divided into anion-dispersed rosin size sizing and cationic-dispersed rosin size sizing. At present, there are the following problems in applying the existing acid rosin sizing process to the production of CTP plate backing paper: 1. Generally, the pH value of the water extraction of acid sized paper is between 6.0-6.8, while CTP The version requires that the pH value of the backing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H17/62D21H17/66D21H21/16D21H21/14D21H11/00
Inventor 陈国平李长荣谭宁华
Owner ZHENJIANG DADONG PULP & PAPER
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