Pulping process for environment-friendly kraft board paper

Abstract

The invention discloses a pulping process for environment-friendly kraft board paper. The pulping process includes the steps that 1, the United States waste paper, England waste paper and European waste paper are mixed uniformly by a certain ratio, wood pulp of a certain ratio is added into the waste paper mixed uniformly, repulping is carried out, and a certain amount of bio-enzyme is added into the repulping process; 2, high-concentration residue removal and screening are carried out on the pulp obtained in the step 1; 3, pulp obtained through screening in the step 2 enters a grading workshop section and is divided into long fiber pulp, middle fiber pulp and short fiber pulp; 4, the three kinds of pulp obtained through grading in the step 3 sequentially pass through respective medium and low concentration residue removal devices to be purified in a residue removal mode; 5, pulp can be obtained by carrying out concentration, heat dispersion and disk milling on the pulp obtained after residue removal. The environment-friendly kraft board paper which is bright in color, high in water resistance and light resistance and consistent in color is manufactured by improving the original pulping process and strictly controlling the beating degree, the temperature and the pH value of the pulp.

Description

technical field [0001] The invention relates to the technical field of pulp production of kraft liner paper, in particular to a pulping process of environment-friendly kraft liner board. Background technique [0002] In the current domestic pulp dyeing process, there are problems such as low dye retention, difficult white water treatment, and poor dyeing effect on the paper surface. Customers have higher and higher requirements for kraft linerboard, so in the production process of kraft linerboard The requirements for the pulping process are also gradually increasing, and certain research and design are also required on the ratio of waste materials. It is also very important to strictly control the beating degree, temperature and ph value of the pulp by optimizing the structure of raw materials and improving the pulping process. Therefore, it is necessary to study and design a new pulping process to improve the overall quality of kraft linerboard. Contents of the invention...

AI Technical Summary

Problems solved by technology

[0002] In the current domestic pulp dyeing process, there are problems such as low dye retention, difficult white water treatment, and poor dyeing effect on the paper surface. Customers have higher and higher requirements for kraft linerboard, so in the production process of kraft linerboard The requirements for the pulping process are also gradually increasing, and certain research and design are also required on the ratio of waste materials. It is also very important to strictly control the beating degree, temperature and ph value of the pulp by optimizing the structure of raw materials and improving the pulping process. important step, so research and design of a new pulping process is necessary to improve the overall quality of kraft linerboard