Production method of high-strength corrugated base paper

Abstract

The invention relates to a production method of high-strength corrugated base paper in the field of corrugated paper production. The production method comprises the steps: step 1, pulping waste paper;step 2, screening the paper pulp in the step 1, and carrying out grading treatment on accepted pulp obtained through screening; step 3, performing slag removal, fine screening and concentration treatment on long fibers to obtain long fiber pulp, and storing the long fiber pulp; carrying out second-stage slag removal, third-stage slag removal and sand setting treatment on slag pulp obtained by long fiber first-stage slag removal, carrying out long fiber first-stage slag removal treatment on accepted pulp subjected to second-stage slag removal, and carrying out second-stage slag removal treatment on accepted pulp subjected to third-stage slag removal; and carrying out long fiber second-stage fine screening on the slag pulp after the first-stage fine screening of the long fibers, concentrating by an inclined net, and continuously carrying out primary screening treatment on pulp obtained after grinding; step 4, carrying out short fiber first-stage slag removal on short fibers and then concentrating to obtain short fiber slurry, storing the short fiber slurry, and carrying out second-stage slag removal treatment on the short fiber first-stage slag removal slag pulp; and step 5, papermaking. Slag pulp generated in the process in the step 3 and the step 4 is treated again, and the recovery rate of fibers in the waste paper treatment process is increased.

Description

technical field [0001] The invention relates to the technical field of corrugated paper production, in particular to a production method of high-strength corrugated base paper. Background technique [0002] Our country is a big production country, and there are a large number of goods transactions every year, and the goods need to be packaged during the sales process. The most common packaging material is cardboard boxes. After packaging, some cardboard boxes are no longer used for repeated packaging. Not only cardboard Boxes, in daily life, also produce a large amount of waste paper, including waste newspapers, periodicals, writing paper, etc. Most of the cartons are reprocessed and utilized by paper mills to generate new value. [0003] The Chinese patent whose notification number is CN104099793B discloses a production method of low-quantity environment-friendly high-strength kraft liner board, which discloses a pulp forming process, including (1) entering waste paper int...

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned existing technical solutions have the following defects: the pulp processing operation in the above-mentioned process is relatively simple, and there is still a part of fiber in the discharged waste residue, which is not effectively utilized, and there is also a waste of resources.

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