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Technology for improving corrugated box board paper strength using laccase treating OCC pulp

A corrugated box and laccase technology, applied in fiber raw material processing, pulp raw material addition process, paper and other directions, can solve problems such as increasing production cost and affecting the effect of adding papermaking enhancers.

Inactive Publication Date: 2007-06-27
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

However, a higher content of anionic garbage will affect the addition effect of traditional p

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  • Technology for improving corrugated box board paper strength using laccase treating OCC pulp

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specific Embodiment approach

[0054] (1) Preparation of pulp suspension

[0055] Hydropulper disintegration: Unbleached chemical pulp, semi-chemical pulp and OCC waste paper are first disintegrated in a hydropulper to prepare pulp with a certain concentration. For OCC waste paper, it is also necessary to remove heavy and bulky impurities in the waste paper during the shredding process.

[0056] Deflagging: For OCC waste paper pulp, fiber separators, disc refiners or high-frequency deflakers are used for deflaking. The purpose is to further decompose the OCC waste paper pulp into a single fiber state.

[0057] Purification and screening: For OCC waste paper pulp, use a cleaner and screener for purification and screening. Deslagging is to remove impurities in waste paper pulp by using the principle that impurities are different from fibers in specific gravity; screening is to use the principle of different shapes and sizes of impurities and fibers to remove impurities in waste paper pulp that are close to ...

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Abstract

A technique for increasing the strength of paperboard or corrugated paperboard by using laccase to treat the OCC pulp, unbleached chemical pulp, or semi-chemical pulp is disclosed. As the circulated white liquid used in making paperboard with said unbleached chemical pulp, semi-chemical pulp and OCC pulp contains a lot of fine fibers, sterol ester, abietic acid, lignan and lignin, which carry a great deal of anions to decrease the effect of strengthening agent and result in environmental pollution, the laccase is used for the catalytic oxidization of wooden fibers to generate the free phenoloxy radicals on the surfaces of wooden fibers and improve the binding strength between fibers.

Description

technical field [0001] The invention relates to a production process for producing corrugated box board paper and liner board by using unbleached chemical pulp, semi-chemical pulp and OCC waste paper pulp as raw materials. Background technique [0002] Corrugated boxboard is an important material for the production of cartons and cartons. It is composed of kraft liner board and corrugated medium paper. The main raw materials for the production of corrugated cardboard are unbleached chemical pulp, semi-chemical pulp and OCC waste paper pulp. In order to protect the environment and make full use of secondary fiber resources, OCC waste paper is currently an important raw material for the production of corrugated boxboard. [0003] OCC (Old Corrugated Containers) waste paper is corrugated box waste paper. The typical production process of corrugated boxboard paper produced from OCC waste paper is as follows: [0004] Shredding: OCC waste paper shredding is carried out in a hyd...

Claims

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Application Information

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IPC IPC(8): D21F11/12D21H17/22D21H21/20D21H23/08D21H23/18
Inventor 裴继诚石淑兰王飞刘娜
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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