Pulping method used for producing kraft paper from recycled waste paper

Abstract

The invention discloses a pulping method used for producing kraft paper from recycled waste paper. The pulping method used for producing kraft paper from recycled waste paper comprises following steps: waste paper is selected, and is introduced into a cutting machine for cutting of waste paper into blocks, and a magnetic separation equipment is adopted for separation of magnetic materials in an obtained primary pulp; the primary pulp is introduced into a screening equipment to remove impurities in the primary pulp so as to obtain a fine screened pulp; the fine screened pulp is subjected to concentration using a multi-disc concentration machine so as to obtain a waste paper pulp; recycled leather is subjected to pulping using a pulper, and then is subjected to high concentration slag removing, coarse screening, low concentration slag removing, fine screening, and concentration successively so as to obtain a leather fiber slurry suitable for paper making; the waste paper pulp and the leather fiber slurry are introduced into a slurry blending barrel to obtain a mixed pulp material for pulping paper making. The technology is simple; cost is relatively; energy saving and environment protection are realized; screening equipment is adopted for screening; the magnetic separation equipment is adopted to remove metal impurities, substrate process equipment wearing is reduced, and servicelife is prolonged.

Description

technical field [0001] The invention relates to the technical field of clean papermaking technology, in particular to a pulping method for producing kraft paper by using recycled waste paper. Background technique [0002] With the development of the packaging industry, customers have higher and higher requirements for packaging paper. In order to protect their products and distinguish the difference from other customers in sales, many customers can give customers better visual effects to attract customers' recognition of products. We hereby invent striped kraft wrapping paper, which is used for packaging items. Because the paper has texture, it is not only beautiful and eye-catching, but also has anti-counterfeiting function, which is easy to win the love of customers and stimulate the sales of products. In modern production technology, more attention is paid to environmental protection and benefits. In the prior art, the pulping method of kraft paper is complicated. Using w...

AI Technical Summary

Problems solved by technology

In modern production technology, more attention is paid to environmental protection and efficiency. In the prior art, the pulping method of kraft paper is complicated. Using waste paper to make paper, the fiber quality is very important. During the pulping process, the fiber needs to be fluffed, and the fiber fluff is in the refining process. Complete, the refining process will damage most of the fibers, the fiber usage rate in the slurry is low, and the production cost is high, so it needs to be improved