Lightweight paper made from high-proportion bamboo pulp and making method of lightweight paper

Abstract

The invention discloses a lightweight paper made from a high-proportion bamboo pulp and a making method of the lightweight paper and relates to the papermaking field. The lightweight paper is prepared from a mixed pulp of a chemical bamboo pulp, a mechanical pulp and a long-fiber CTMP pulp in the weight ratio of (50-55): (45-40): (5-10), and the following accessories in percentage by weight: 1.2% of starch, 10% of talcum powder, 0.6%-0.8% of dispersed rosin size, 6%-7% of aluminum sulfate, and 0.2kg / t of polyacrylamide PL1510; in the papermaking process: the indices, such as beating degree and ISO whiteness, of the chemical bamboo pulp and the mechanical pulp before blending are controlled; the following quality indices of the pulp applied to a screen are controlled: pH value of 5.8-6.2, concentration of 0.7-0.9% and beating degree of 47-55degree S. According to the lightweight paper, the high-proportion bamboo pulp is adopted, the raw material range of the lightweight paper is expanded, the product cost is low, the product is pure environmentally friendly and green, and the pollution load is low.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a light-duty paper prepared with a high proportion of bamboo pulp and a method for making the same. Background technique [0002] As a new type of printing paper, lightweight printing paper is more and more widely used in the printing of books and periodicals because of its high bulk, stiffness, opacity and good printability. At present, most of the printing paper used by publishing houses still use offset paper; although some high-end printed products use light cultural paper (Monken paper), they are also imported at high prices; according to statistics, my country imports offset printing paper from abroad every year 1.6 million tons, import 500,000 tons of light high-grade cultural paper, 300,000 tons of Monken paper, and consume 15.3 billion yuan in foreign exchange every year. Therefore, replacing imported offset paper and light cultural paper with domestic light cultural...

AI Technical Summary

Problems solved by technology

At present, there are relatively few light-weight printing paper companies in China, and most of the light-duty papers produced by these enterprises are APMP pulp mixed with some coniferous mechanical pulp and some coniferous chemical pulp. The production cost is relatively high.

Images