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On-line silk screen printing process for paper production

A screen printing and process technology, applied in the field of online screen printing in paper production, can solve the problems of high power per unit area of ​​equipment, inability to meet testing requirements, large water loss in paper, etc., to achieve high drying efficiency and shorten production. Cycle, the effect of less water loss

Active Publication Date: 2005-07-06
CHINA BANKNOTE PRINTING & MINTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hot air drying, huge equipment, large floor area, serious paper moisture loss; UV curing, high power per unit area of ​​equipment, generally 1.2KW / cm 2 , paper moisture loss is also large
Neither of these two methods can meet the requirements of paper moisture detection in the papermaking production line
Ordinary screen printing, quality process control adopts manual sampling, and then manually adjusts the machine, the product scrap rate is high, and the degree of automation is low

Method used

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Embodiment Construction

[0032] The invention combines papermaking production with cylinder screen printing, performs online screen printing in the existing paper production process, and realizes online screen printing for continuous paper production. The specific process steps are as follows

[0033] pulping. Garden net papermaking forming. press. Pre-dry. For surface sizing, groove sizing, roller sizing or spraying can be used for surface sizing. The groove sizing process is simple and the cost is low. Air cushion drying, hot air drying can be used for drying, but UV curing is generally used, which has high drying efficiency, short drying time, less water loss for online paper production, and small footprint. Soft calendering. Moisture scan detection. Printing process: There are two links of printing and drying. Specifically, printing processes such as screen printing, offset printing, gravure printing or missing printing can be used. Carry out roll paper and put it into storage. Before roll...

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PUM

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Abstract

This invention relates to a paper production online screen-printing process, which combines the paper production and rolling screen-printing and processes the printing on the current paper production to realize the continuous paper production. The invention comprises the following steps: plasm making; round net paper shaping; compressing; pre-drying; surface coating; gas cushion and drying; softening; water scanning; printing; rolling; entering base.

Description

technical field [0001] The invention relates to an online screen printing process for paper production. Background technique [0002] At present, the papermaking production process is to roll the paper after pulping, circular net forming, pressing, pre-drying, surface trough sizing, air cushion drying, soft calendering, moisture scanning detection, and slitting. The whole production process is Finish. Special markers in the paper, such as watermarks, security lines, etc., are formed in the network groove of the paper machine. [0003] Ordinary screen printing is that after the finished paper is fed, printed, hot air dried or UV cured, the paper is collected into the stack, put into the product warehouse, and turned over after 24 hours. The production process is long, the floor area is large, there are many machine operators, and the production cycle is more than 40 hours, which is time-consuming and laborious. Ordinary screen printing can only print single-sheet products,...

Claims

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Application Information

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IPC IPC(8): B41M1/00B41M3/00B41M3/14
Inventor 李策刘杰赵保玉张伯涛刘文全董耀武行基李鸿斌沈建民杨铭席娜
Owner CHINA BANKNOTE PRINTING & MINTING
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