Method for producing computer-to-plate lining paper

A production method and computer technology, applied in papermaking, textile and papermaking, inorganic compound addition, etc., to achieve the effects of good paper quality, good economic benefits, and far-reaching social benefits
CN101787662AActive Publication Date: 2010-07-28ZHENJIANG DADONG PULP & PAPER
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
ZHENJIANG DADONG PULP & PAPER
Publication Date
2010-07-28

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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 rosin acid 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.
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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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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