Manufacturing method of novel environment-friendly kraft board paper

Abstract

The invention discloses a manufacturing method of novel environment-friendly kraft board paper. According to the manufacturing method, starch in pulp is recycled, COD (chemical oxygen demand) of wastewater is reduced, retention and drainage agents, aluminum sulfate and macromolecular dry strength agents are added into a flowing system in order to solve the problems of short fibers and low pulp retention, the pulp retention and the strength of subsequent finished paper are improved, starch and small fibers are adsorbed on long fibers, high retention of the starch is achieved, a PH (potential of hydrogen) valve of the pulp is adjusted to neutral by the aluminum sulfate, anionic trash in the pulp is removed by the aid of aluminum ions, mutual combination between fibers is improved by the aidof the dry strength agents, combining capacity of the fibers is enhanced, the combining capacity of the fibers and the physical strength of the finished paper are improved by the aid of chemical fiber modified technique, sizing agents are added into the pulp, so that the strength of the finished paper is improved, high ash content is kept, the utilization rate of waste paper is increased, the strength of the finished paper is enhanced, and the manufacturing method is applicable to production lines of most kraft board paper and has a quite wide market prospect.

Description

technical field [0001] The invention relates to the technical field of kraft liner paper, in particular to a manufacturing method of a novel environment-friendly kraft liner board. Background technique [0002] After the development of the paper industry during the "Twelfth Five-Year Plan" period, the paper industry has generally increased the recycling and utilization of waste paper, especially for cardboard manufacturers, the use of recycled waste paper or recycled waste paper as the main raw material is a major development trend . [0003] In the entire paper industry chain, due to the increase in production costs, especially the increase in labor costs and energy costs, low-quantity packaging paper is generally used instead of high-quantity packaging paper to reduce production costs, and waste paper is used as the main raw material. The downstream kraft linerboard manufacturers, in order to meet the needs of customers, their products also tend to develop in the directio...

AI Technical Summary

Problems solved by technology

[0004] All or most of the raw materials for kraft linerboard use recycled waste paper. Due to the shortcomings of recycled waste paper, such as many cycles, short fiber length, low strength and high starch content in waste paper, the physical strength of the paper is poor, and at the same time it will produce A series of problems such as reduced production capacity, fouling of the papermaking system, reduced use of chemicals, and increased COD in papermaking wastewater