A papermaking method for producing thin steel paper from waste paper slag

Abstract

The invention discloses a papermaking method using waste paper residual to produce thin hard paper. The method comprises a size mixing step in a pulp mixing pool and a step of making well mixed full pulp fibers to the thin hard paper; during papermaking and after squeezing, using a surface sizing machine to perform double face sizing on a semi-dried paper sheet, wherein a surface sizing agent adopts gelatinized modified starch, the additive amount of the modified starch is 2.0-3.0% of bone dry pulp, and the concentration of the gelatinized modified starch is 2.0-3%; after the modified starch is dispersed to turbid liquid of 4-6%, introducing steam to heat to a boiling state for 5-10 minutes, adding a synergist and adding trace steam to moisturize for 20-30 minutes, finally applying onto the semi-dried paper sheet by the surface sizing machine through a 80-mesh filter sieve, drying the paper sheet subjected to surface sizing at a drying part, reeling the dried finish paper in a paper reeling machine, and then feeding into a re-reeling machine for re-reeling to become a finished product paper roll, wherein the gelatinization method of the starch comprises the steps of gelatinizing by using a stirrer with a gelatinization slot and the revolution of the stirrer is 50-60rpm.

Description

technical field [0001] The invention relates to a production method of thin steel paper, in particular to a papermaking method for producing thin steel paper by utilizing waste paper slag. Background technique [0002] Thin steel paper is an industrial technical paper used by chemical fiber equipment factories in the textile industry to make filament high-speed spinning copper cores. It not only requires high dry and wet strength, smoothness and wear resistance, but also must have the characteristics of oil resistance and water resistance, and it is required to be lint-free and deformation-free during high-speed polyester spinning after being rolled into a tube. Do not burst. Based on the above characteristics, thin steel paper is required to have a certain physical strength and a high quantitative (usually 360-520g / m2). [0003] In the prior art, the copying of waste paper slag to produce thin steel paper generally adopts the copying method of ordinary paper pages to copy...

AI Technical Summary

Problems solved by technology

The above-mentioned papermaking method uses all waste paper as raw material, which can greatly reduce the consumption of resources in papermaking production, is environmentally friendly and reduces the production cost of the papermaking industry, but the recycling of secondary fibers adopts the above-mentioned ordinary papermaking molding method to copy. There will be papermaking defects such as sticking nets, and the bonding force between the copied steel paper sheets is insufficient, easy to delaminate, and the strength, smoothness and wear resistance of the paper are not good

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