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Method for Producing Copy Paper from Large-scale Mechanical Pulp

A technology of chemical-mechanical pulp and copy paper, which is applied in the field of papermaking, can solve the problems of high unit cost, achieve the effects of lower unit cost, stable and reliable production process, and flexible operation

Inactive Publication Date: 2015-09-09
MCC MEILI CLOUD COMPUTING IND INVESTMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to meet the above requirements, a small amount of wheat straw pulp is usually mixed with 45-50% commercial pulp (commercial bamboo pulp, hardwood pulp, commercial reed pulp) to make pulp, so the unit cost is very high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] After beating and blending, the finished copy paper is obtained by papermaking according to the conventional process.

[0016] According to the normal production organization beating ingredients.

[0017] In order to ensure that the large-scale chemical pulp production of copy paper, the paper has good uniformity and uniformity, and the degree of tapping is controlled at 38±3°SR. In the beating process, the beating slurry is first refluxed. When the inspector detects that the beating degree reaches the technological requirement range, the beating is performed normally.

[0018] The pulping uses 25-30% poplar wood chemical pulp to replace commercial pulp, and other technological conditions remain unchanged, the product quality has not changed, and the pulp concentration is controlled between 2.8% and 3.0%.

[0019] (1) Slurry ratio

[0020] Softwood pulp: 10-15%, poplar chemical pulp: 25-30%,

[0021] Four-stage bleached straw pulp: 35-40%, loss of paper pulp: 10%, commercial reed...

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PUM

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Abstract

The invention relates to a method for producing copy paper by high-proportion chemi-mechanical pulp. The method comprises the steps of pulping and pulp preparation. The method is characterized in that 25%-30% of the chemi-mechanical pulp of poplar is adopted to prepare the pulp. According to the method, 25%-30% of the chemi-mechanical pulp of poplar is adopted to replace equivalent commercial pulp, so that the use amount of the commercial pulp is reduced by 25%-30%, the requirements on product standards can be met, and the unit cost is substantially lowered. The method provided by the invention is flexible, simple and convenient to operate and is stable and reliable in production process; and the copy paper manufactured by the method is good in stiffness of paper surface and high in thickness.

Description

Technical field [0001] The invention relates to the technical field of papermaking, in particular to a method for producing copy paper with a large-scale chemical pulp. Background technique [0002] Copy paper is special paper for copiers. In daily work, copy paper is used very frequently. The quality of copy paper will directly affect the speed of work efficiency and the appearance of documents. Therefore, the requirements for the quality of copy paper have always been very high, such as requiring the product to have good stiffness and high thickness. In order to meet the above requirements, a small amount of wheat straw pulp is usually used, and 45-50% of commercial pulp (commercial bamboo pulp, hardwood pulp, commercial reed pulp) is used to make pulp, so the unit cost is high. Summary of the invention [0003] The purpose of the present invention is to overcome the above-mentioned defects of the prior art and provide a method for producing copy paper with a large-scale chemic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H15/10
Inventor 郭旭斌王学军卢元庆陈艳娟陈佳慧张金霞贺静
Owner MCC MEILI CLOUD COMPUTING IND INVESTMENT CO LTD