Method for preparing higher-quality paper from waste compound paper source recycled paper pulp

Abstract

The invention discloses a method for preparing higher-quality paper from waste compound paper source recycled paper pulp. The higher-quality paper is prepared by the following steps of: preparing waste compound paper source recycled paper pulp or / and sizing agent doped with polyvinyl alcohol fiber into paper; directly impregnating the paper on a paper machine into a colloid addition agent; and drying the mixture on the paper machine by a drying cylinder; or / and adding the colloid addition agent in a waste compound paper source recycled paper pulp blending tank in advance before making paper. The higher-quality paper is characterized by comprising the parameters that the burst index (kPa.m<2> / g) is more than 2.2, the tensile index (N.m / g) is more than 20, the tear index (mN.m<2> / g) is more than 4.0, the Cobb value [(60s)m<2> / g] is less than 30 and the fixed quantity (m<2> / g) is 30-100; and the varieties of the higher-quality paper comprise kraft paper, wrapping paper, non-setting adhesive base paper, glazed paper and base paper for laminating.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and relates to a method for preparing high-quality paper by using regenerated pulp of waste composite paper sources. Background technique [0002] The production and application of waste paper source recycled pulp has a long history. With the development of society, the regeneration treatment and utilization technologies of various new waste papers are also changing rapidly. At present, from a new type of aluminum, plastic composite The so-called waste composite paper source regenerated pulp obtained from waste paper regeneration, compared with virgin pulp, its bursting strength, folding strength, ring pressure, tearing strength and other strength indicators are worse than that of virgin pulp, and it often cannot be used as Pulp for making higher quality paper. With the development of society, all kinds of paper-making resources, especially those used to make higher-quality paper, are increa...

AI Technical Summary

Problems solved by technology

[0002] The production and application of waste paper source recycled pulp has a long history. With the development of society, the regeneration treatment and utilization technologies of various new waste papers are also changing rapidly. At present, from a new type of aluminum, plastic composite The so-called waste composite paper source regenerated pulp obtained from waste paper regeneration, compared with virgin pulp, its bursting strength, folding strength, ring pressure, tearing strength and other strength indicators are worse than that of virgin pulp, and it often cannot be used as Pulp for making higher quality paper

With the development of society, all kinds of paper-making resources, especially those used to make higher-quality paper, are increasingly scarce. Therefore, waste paper pulp, especially a new type of aluminum-plastic composite waste paper that is increasing day by day It is becoming more and more necessary to make paper from recycled pulp, but there is no detailed report in the literature on how to use recycled pulp from waste composite paper to produce higher-quality paper.