A method for reinforcing and modifying OCC slurry fiber and its application

CN116971202BActive Publication Date: 2025-02-28LIANSHENG PAPER IND LONGHAI
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Patent Information

Application Number
CN202310781647.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-06-29
Publication Date
2025-02-28
Estimated Expiration
2043-06-29

AI Technical Summary

Technical Problem

In the prior art, 100% of domestic waste OCC raw materials are mainly used to produce ketchup paper, resulting in low fold resistance of the paper, and the quality of the carton burst wire after the base paper is made into a carton.

Method used

By adding 2-hydroxy-3-(trimethylamino)propyl ether starch chloride to the OCC slurry and mixing, a modified OCC slurry is obtained to enhance overlap between fibers, improve the strength and length of the fibers, and improve the fold resistance of the paper.

Benefits of technology

It effectively improves the fold resistance of knot paper by 10-20%, reduces the dependence on purchased long fibers (such as wood pulp and Meiwa) and improves the raw material structure and reduces the overall cost.

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Abstract

The invention relates to a method for reinforcing and modifying OCC slurry fibers, wherein 2-hydroxy-3-(trimethylamino)propyl ether starch chloride is added to the OCC slurry for mixing to obtain a modified OCC slurry. Different from the prior art, 2-hydroxy-3-(trimethylamino)propyl ether starch chloride has a grafting effect, which can enhance the overlap between OCC fibers, and the fine fibers in the OCC fibers are connected to the medium and long fibers, so that the fibers become thicker and stronger, and the strength is increased, and the excessive flocculation of the fibers is not affected.
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Citation Information

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