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Water supplementing method in coating process of paper coating machine

A coating machine and paper technology, applied in the process of adding pulp raw materials, paper, paper machines, etc., can solve problems such as difficulty in meeting, long distance, and reduced adhesion, and achieve the effect of avoiding excessive water replenishment at one time

Active Publication Date: 2020-04-17
昆山上悦标签新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantages of this method of replenishing water through rollers are: 1. It can only be slightly stained with some water on the surface of the paper. The water does not penetrate into the paper in a short time, and the water only adheres to the surface of the paper; 2. Use The distance between the roller shaft for replenishing water and the gluing in the next process is relatively far, resulting in serious loss of moisture attached to the surface of the paper during high-speed operation. drop with force
It is difficult to meet the above-mentioned national standard requirements when the existing paper is replenished with water through the roller

Method used

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  • Water supplementing method in coating process of paper coating machine
  • Water supplementing method in coating process of paper coating machine
  • Water supplementing method in coating process of paper coating machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for replenishing water during the coating process of a coating machine for coated paper, the method comprising the following steps:

[0031] (1) Use a moisture measuring instrument to measure the moisture content in the original coated paper to be 3.5%. According to the national standard reference value of 5.5%, the required water replenishment amount is calculated to be 2%.

[0032] (2) Set the parameters of the above-mentioned roller shaft water replenishment device (the water replenishment amount is set to 2%), so that the original coated paper touches the roller shaft water replenishment device through the lower surface of the original coated paper before advancing to the coating head of the coater The roller shaft absorbs liquid water to obtain the first water replenishment, and the coated paper after the first water replenishment advances to the coating head of the coating machine for hot glue coating;

[0033] (3) Utilize the moisture measuring instrumen...

Embodiment 2

[0041] A method for replenishing water in a coater coating process of writing paper, the method comprising the following steps:

[0042] (1) Utilize the moisture measuring instrument to measure the moisture content in the original writing paper to be 4%, according to the benchmark value of the national standard of 6%, the calculated water replenishment amount is 2%.

[0043] (2) Set the parameters of the roller shaft water replenishment device (set the water replenishment amount to be 2%), so that the original writing paper contacts the roller shaft water replenishment device by the lower surface of the original writing paper before advancing to the coating head of the coater The roller shaft absorbs liquid water to obtain the first water replenishment, and the writing paper after the first water replenishment travels to the coating head of the coating machine for thermal coating;

[0044] (3) Utilize the moisture measuring instrument to measure the moisture content in the wri...

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Abstract

The invention discloses a water supplementing method in a coating process of a paper coating machine. The water supplementing method comprises: carrying out first water supplementing by making paper adsorb liquid-state water before the paper reaches the coating head of a coating machine, and carrying out second water supplementing by making the paper adsorb water vapor after the paper reaches thecoating head of the coating machine. According to the water supplementing method, the paper can be precisely supplemented according to the actual requirements of the paper.

Description

technical field [0001] The invention relates to the field of paper production, more specifically, to a method for replenishing water in the coating process of a coating machine in paper production. Background technique [0002] The papermaking process generally includes the following main links: 1. Pulping section: raw material selection → cooking and separating fibers → washing → bleaching → washing and screening → concentration or copying into pulp sheets → storage for later use; 2. Papermaking section: loose pulp → removal Impurities → fine pulp → beating → preparation of various additives → mixing of paper stock → flow of paper stock → head box → press section → drying section → surface sizing → drying → calendering → coiling into paper; 3. Coating Section: coated base paper→coating machine coating→drying→winding→rewinding→super calendering; 4. Processing section: rewinding→cutting flat (or reel)→sorting and packaging→end of storage. [0003] The moisture content of pap...

Claims

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Application Information

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IPC IPC(8): D21H23/30D21H25/04D21H25/06D21G7/00
CPCD21H23/30D21H25/04D21H25/06D21G7/00
Inventor 龙会伦彭卫东杨正芳
Owner 昆山上悦标签新材料有限公司
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