Method for producing highly quantitative two-side offset paper

Abstract

The invention belongs to papermaking technologies and relates to a method for producing highly quantitative two-side offset paper. The method comprises the following steps: sequentially performing pulping, size mixing, sizing, manufacturing paper with pulp, pre-drying, surface sizing, after-drying, press polish and rolling on basic raw materials such as bleached sulfate needlebush pulp and bleached sulfate broadleaf wood pulp, and finally finishing into paper; and allowing the materials in the pulping process to sequentially pass through a pulper, a pulp storage pool, a pulp grinder and the pulp storage pool according to a material transfer sequence, wherein in the pulping process, the pulping beating degree of the bleached sulfate needlebush pulp in the basic raw materials is required to be 25-320SR, and the pulping beating degree of the bleached sulfate broadleaf wood pulp is required to be 24-330SR. According to the method, the highly quantitative two-side offset paper can be manufactured with pulp, and the manufactured paper is high in surface strength, high in internal binding force, high in smoothness and small in two-side difference.

Description

technical field [0001] The invention belongs to the papermaking technology and relates to a production method of high-quantity offset paper. Background technique [0002] With the development of the economy, the use of paper is becoming wider and wider, and the demand for high-quantity offset paper with high requirements for thickness and surface fineness in greeting cards, advertisements, and publicity is also increasing. [0003] Paper is distinguished according to its quantitative size, which can be divided into paper and cardboard. Those with a basis weight greater than 220gsm are generally called cardboard, and those with a basis weight less than 220gsm are generally called paper. Traditional offset paper is generally less than 220gsm, and ordinary fourdrinier multi-cylinder paper can be used. Machine production, but the paper produced by ordinary fourdrinier multi-cylinder paper machines is generally below 200gsm. If the basis weight exceeds 200gsm, it will be difficul...

AI Technical Summary

Problems solved by technology

[0003] Paper is distinguished according to its quantitative size, which can be divided into paper and cardboard. Those with a basis weight greater than 220gsm are generally called cardboard, and those with a basis weight less than 220gsm are generally called paper. Traditional offset paper is generally less than 220gsm, and ordinary fourdrinier multi-cylinder paper can be used. Machine production, but the paper produced by ordinary fourdrinier multi-cylinder paper machines is generally below 200gsm. If the basis weight exceeds 200gsm, it will be difficult to make paper, the difference between the two sides of the paper is large, and the paper evenness is poor.

Usually, paper with a basis weight of 200gsm or more is mostly made by multi-drinier paper machines, and those with three-layer or above wires are usually made, but paper machines with three-layer wires and above are generally used to make cardboard, and three-layer wires The cost of the paper machine is high, and the paper produced is a three-layer composite, with obvious layering, and the difference between the two sides of the paper is large

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