Cotton paper papermaking process

A papermaking process and tissue paper technology, applied in papermaking, textiles, papermaking, paper, etc., can solve the problems of strength wet strength, air permeability, softness, and water absorption that cannot fully meet the needs of high-end markets, achieving good absorbency, The effect of good uniform performance and simple process flow

Active Publication Date: 2012-06-13
山东恒联桦林新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing products have been at the level of medium and low-grade paper due to many reasons such as outdated equipment, backward technology and management co...

Method used

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  • Cotton paper papermaking process
  • Cotton paper papermaking process

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Experimental program
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Effect test

Embodiment 1

[0026] Long-fiber wood pulp and short-fiber wood pulp, with a weight ratio of 80:20, are crushed by a hydropulper, and then beaten by a double-disc refiner. The beating method is long-fiber viscous beating, which requires fiber height Silk broom, swelling and fibrillation, try to avoid cutting the fiber to maintain the high strength of the fiber, adopt the method of gradually increasing the weight, cutting the knife in sections, and beating for a long time, that is, the first-stage beating current is 100A, the second-stage beating current is 120A, and the third-stage beating current is 120A. The stage current is 140A, the beating time is controlled at 2 hours, the beating degree is controlled at 35 ° SR, the beating concentration is controlled at 3.2%, and the wet weight is controlled at 11g. 50kg of paper is added to the wet strength agent. During operation, first dilute the wet strength agent in water to a solution with a concentration of 0.5-1.0%, then add it slowly and stir...

Embodiment 2

[0030] Long-fiber wood pulp and short-fiber wood pulp, with a weight ratio of 80:20, are crushed by a hydropulper, and then beaten by a double-disc refiner. The beating method is long-fiber viscous beating, which requires fiber height Silk broom, swelling and fibrillation, try to avoid cutting the fiber to maintain the high strength of the fiber, adopt the method of gradually increasing the weight, cutting the knife in sections, and beating for a long time, that is, the first-stage beating current is 105A, the second-stage beating current is 125A, and the third-stage beating current is 125A. The stage current is 145A, the beating time is controlled at 2 hours and 10 minutes, the beating degree is controlled at 37°SR, the beating concentration is 2.9%, and the wet weight is 10.5g. Add the wet strength agent in an amount of 60kg. During operation, first dilute the wet strength agent in water to a solution with a concentration of 0.5-1.0%, then add it slowly and stir evenly. Tran...

Embodiment 3

[0034] The long-fiber wood pulp and short-fiber wood pulp, with a weight ratio of 85:15, are disintegrated by a hydropulper, and then beaten by a double-disc refiner. Silk broom, swelling and fibrillation, try to avoid cutting the fiber to maintain the high strength of the fiber, adopt the method of gradually increasing the weight, cutting the knife in sections, and beating for a long time, that is, the first-stage beating current is 100A, the second-stage beating current is 120A, and the third-stage beating current is 120A. Sectional current 140A, beating time 2 hours, beating degree 38 ° SR, beating concentration 3.1%, wet weight 10.7g, the paper pulp is prepared, and transferred to the batching tank for pulping. When operating, first dilute the wet strength agent in water to a solution with a concentration of 0.5-1.0%, then add it slowly and stir evenly. Transfer to the forebear tank for dilution, screening, and purification, and add dispersant through the high-level box, t...

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Abstract

The invention discloses a cotton paper papermaking process, which includes the steps of wood pulp size degradation, beating, pulp preparation, screening and purification, sizing and forming, squeezing and stoving. The beating step is performed in a long-fiber slow beating mode, a papermaking dry intensifier is added in the pulp preparation step, and a papermaking dispersing agent is added before paper pulp sizing. The wood pulp is long-fiber wood pulp and short-fiber wood pulp, and weight ratio is 80-90:10-20. In the beating step, beating degree is controlled in a range of 38-44 degrees SR, beating concentration is controlled in a range of 2.8-3.2%, and beating wet weight is controlled in a range of 10-11 g. The tissue paper papermaking process is simple in process flows, even in fiber interweaving, soft in paper quality, high in tensile strength, good in air permeability and high in wet strength, and meets specific requirements of customers.

Description

technical field [0001] The invention relates to a papermaking process, in particular to a cotton paper papermaking process for packaging vegetables. Background technique [0002] In recent years, with the development of science and technology and the enrichment and continuous improvement of people's living standards, more and more attention has been paid to health, especially the requirements for food safety and packaging safety are also getting higher and higher. The paper industry is an important basic raw material industry closely related to the development of the national economy and social undertakings. The consumption level of paper and cardboard is a symbol to measure the level of modernization and civilization of a country. In the 60 years since the founding of the People's Republic of China, especially with the pace of China's reform and opening up for 30 years, my country's paper product packaging industry has also developed rapidly while making contributions to co...

Claims

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Application Information

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IPC IPC(8): D21H15/06D21H21/20D21H21/08D21H17/55
Inventor 张利韩建春刘勇高振玉张建华
Owner 山东恒联桦林新材料有限公司
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