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Preparation method of environment-friendly printing and writing paper

A technology for writing paper and culture, applied in the field of preparation of environmental protection cultural writing paper, can solve the problems of easy moldy, low utilization rate of raw materials, unfavorable environmental protection, etc. The effect of reducing the consumption of wood

Active Publication Date: 2017-07-18
SHANYING INT HLDG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the process pulp that removes the middle layer lignin and cell lignin in the raw material, it has the disadvantages of low raw material utilization rate and high production cost, so cultural writing paper is used in large quantities, which is not conducive to environmental protection; although, the commonly used Cultural writing paper can even be stored for more than 6 years at room temperature. However, when the humidity in the environment exceeds 55%, the cultural writing paper is prone to mildew, and in the process of use, the existing cultural writing paper will also attract moth-eaten

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1) Cutting, crushing, and transporting office waste paper to the pre-pregrasser for soaking, dehydration by screw extrusion, and coarse grinding by the coarse mill to form waste paper pulp, which is transported to the high-consistency pulp storage tower, and then to the high-consistency storage pulp Bleached chemical pulp is added to the tower, and the weight ratio of bleached chemical pulp and waste paper pulp in the high-consistency storage tower is 5:1; the bleached chemical pulp and waste paper pulp in the high-consistency storage tower are transported to the hydropulper, and then sequentially After high-concentration desander, coarse screen, heavy desander, fine screen, multiple disc thickener, heat dispersion system, disc mill, and slurry tank; among them, the sieve plate aperture of the hydraulic pulper is 13mm, and the beating concentration is 4.1 ~4.5%, the pulping degree is 36~42°SR.

[0018] 2) Add calcium carbonate and polyacrylamide to the pulp tank, the am...

Embodiment 2

[0022] 1) Cutting, crushing, and transporting office waste paper to the pre-pregrasser for soaking, dehydration by screw extrusion, and coarse grinding by the coarse mill to form waste paper pulp, which is transported to the high-consistency pulp storage tower, and then to the high-consistency storage pulp Bleached chemical pulp is added to the tower, and the weight ratio of bleached chemical pulp and waste paper pulp in the high-consistency storage tower is 22:5; the bleached chemical pulp and waste paper pulp in the high-consistency storage tower are transported to the hydropulper, and then sequentially After high-concentration desander, coarse screen, heavy desander, fine screen, multiple disc thickener, heat dispersion system, disc mill, and slurry tank; among them, the sieve plate aperture of the hydraulic pulper is 15mm, and the beating concentration is 4.1 ~4.5%, the pulping degree is 36~42°SR.

[0023] 2) Add calcium carbonate and polyacrylamide to the pulp tank, the a...

Embodiment 3

[0027] 1) Cutting, crushing, and transporting office waste paper to the pre-pregrasser for soaking, dehydration by screw extrusion, and coarse grinding by the coarse mill to form waste paper pulp, which is transported to the high-consistency pulp storage tower, and then to the high-consistency storage pulp Bleached chemical pulp is added to the tower, and the weight ratio of bleached chemical pulp and waste paper pulp in the high-consistency storage tower is 4:1; the bleached chemical pulp and waste paper pulp in the high-consistency storage tower are transported to the hydropulper, and then sequentially After a high-concentration desander, a coarse screen, a heavy desander, a fine screen, a multiple disc thickener, a heat dispersion system, a disc mill, and a slurry tank; among them, the sieve plate aperture of the hydraulic pulper is 16mm, and the beating concentration is 4.1 ~4.5%, the pulping degree is 36~42°SR.

[0028] 2) Add calcium carbonate and polyacrylamide to the p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a preparation method of environment-friendly printing and writing paper. Bleached chemical pulp and office waste paper are taken as raw materials, the office waste paper is used for replacing part of traditional bleached chemical pulp, so that large amount of solid office waste paper is treated while production cost is reduced, and the printing and writing paper is environment-friendly. Surface sizing is performed on paper with a surface sizing agent prepared from carboxymethyl cellulose, sodium silicate, a phryma leptostachya extract, gelatin and water, so that the environment-friendly printing and writing paper is not prone to worm damage, bacteria breeding or mildew and can be stored for a long time, and product quality and grade are improved substantially.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a preparation method of environment-friendly cultural writing paper. Background technique [0002] Cultural writing paper is a kind of cultural paper with a large consumption. It is made of bleached chemical pulp, and chemical pulp is pulp extracted from wood by chemical methods, as opposed to mechanical pulp. Chemical pulp is pulp made mainly of chemicals in the process of making pulp. Of course, there are certain differences depending on the drugs used and the manufacturing methods. Compared with the process pulp that removes the middle layer lignin and cell lignin in the raw material, it has the disadvantages of low raw material utilization rate and high production cost, so cultural writing paper is used in large quantities, which is not conducive to environmental protection; although, the commonly used Cultural writing paper can even be stored for more than 6 years at ro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21B1/10D21B1/32D21H17/55D21H17/67D21H21/16
CPCD21B1/10D21B1/32D21H17/55D21H17/675D21H21/16Y02W30/64
Inventor 占正奉孙后年陈学萍颜建秋黄尊宏方江生
Owner SHANYING INT HLDG CO LTD
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