Method of producing copying paper

Abstract

The invention provides a copy paper preparation which can avoid depositing adhesive in the pulping process, wherein the invention adds anti-deposit material in present pulping process that adds talcum powder into pulping process, adds the compound of poly-sodium acrylate and acroleic acid-maleic anhydride polymer in the pulp preparation, adds cation polyacrylamide into screened pulp to avoid depositing adhesive.

Description

technical field [0001] The invention relates to a method for producing copy paper. Background technique [0002] The papermaking process is well-known, and its technological process includes: pulp sheet preparation -- pulp sheet crushing -- beating or refining -- pulp blending -- purification -- pulp screening -- pulp output from headbox -- wire dehydration -- - Pressing and dehydration--drying--calendering--rolling--rewinding--packing. The above-mentioned papermaking process is partially adjusted according to the different types and specifications of the paper to be produced. In the process of using waste paper to produce copy paper according to the above process, it was found that a large amount of adhesive substances in a semi-molten state were gradually deposited on the net, blanket, and drying cylinder, resulting in sticky net, sticky felt, sticky cylinder, and sticky rolls on the paper , holes and other unfavorable conditions, resulting in low efficiency of the dryin...

AI Technical Summary

Problems solved by technology

In the process of using waste paper to produce copy paper according to the above process, it was found that a large amount of adhesive substances in a semi-molten state were gradually deposited on the net, blanket, and drying cylinder, resulting in sticky net, sticky felt, sticky cylinder, and sticky rolls on the paper , holes and other unfavorable conditions, resulting in low efficiency of the drying cylinder, which seriously affects the normal operation and production efficiency of the paper machine