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Pretreatment method for producing bleach pulp for high-strength corrugated paper

A corrugated paper and pretreatment technology, applied in the field of papermaking, can solve the problems of low ring pressure index and long fracture of high-strength corrugated paper, and achieve the effect of reducing pollution and improving economic benefits.

Inactive Publication Date: 2018-01-19
广西金荣纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the traditional chemical pulping method, the water consumption per ton of paper is greatly reduced, but there are problems such as the yield of natural color pulp, the fracture length of high-strength corrugated paper and the low ring pressure index

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for preparing high-strength corrugated paper produced by a bleaching process, comprising the following steps:

[0033] S1: Grinding the bagasse, and transporting the obtained pulverized product into the primary treatment liquid, the weight ratio of the bagasse pulverized product to the primary treatment liquid is 1:1.3, and the primary treatment liquid is in parts by weight , including the following raw materials: 8 parts of stearamide, 5 parts of fatty alcohol polyoxyethylene ether, 1.5 parts of sodium dodecylbenzenesulfonate, 2.4 parts of sodium alkyl succinate sulfonate, 0.1 part of cellulase, 70 parts of water Parts were soaked for 30 minutes at an ultrasonic power of 80W and a temperature of 40°C, and then filtered to obtain the impregnated material a;

[0034] S2: Transport the immersion material a prepared in step S1 to the secondary treatment liquid, the weight ratio of the immersion material a to the secondary treatment liquid is 1:4.5, and the seconda...

Embodiment 2

[0038]A method for preparing high-strength corrugated paper produced by a bleaching process, comprising the following steps:

[0039] S1: Grinding the bagasse, and transporting the obtained pulverized product to the primary treatment liquid, the weight ratio of the bagasse pulverized product to the primary treatment liquid is 1:4, and the primary treatment liquid is in parts by weight , including the following raw materials: 12 parts of stearamide, 9 parts of fatty alcohol polyoxyethylene ether, 2.5 parts of sodium dodecylbenzenesulfonate, 4.5 parts of sodium alkyl succinate sulfonate, 0.2 part of cellulase, 160 parts of water , soaking for 20 minutes at an ultrasonic power of 120W and a temperature of 50°C, and then filtering to obtain the impregnated material a;

[0040] S2: Transport the immersion material a prepared in step S1 to the secondary treatment liquid, the weight ratio of the immersion material a to the secondary treatment liquid is 1:12.6, and the secondary treat...

Embodiment 3

[0044] A method for preparing high-strength corrugated paper produced by a bleaching process, comprising the following steps:

[0045] S1: Grinding the bagasse, and conveying the obtained pulverized product to the primary treatment liquid, the weight ratio of the bagasse pulverized product to the primary treatment liquid is 1:3, and the primary treatment liquid is in parts by weight , including the following raw materials: 10 parts of stearamide, 8 parts of fatty alcohol polyoxyethylene ether, 2 parts of sodium dodecylbenzenesulfonate, 3.5 parts of sodium alkyl succinate sulfonate, 0.1 part of cellulase, 120 parts of water , soaking for 25 minutes at an ultrasonic power of 100W and a temperature of 45°C, and then filtering to obtain the impregnated material a;

[0046] S2: Transport the immersion material a prepared in step S1 to the secondary treatment liquid, the weight ratio of the immersion material a to the secondary treatment liquid is 1:8, and the secondary treatment li...

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PUM

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Abstract

The invention discloses a pretreatment method for producing bleach pulp for high-strength corrugated paper. The pretreatment method comprises the following steps of S1, crushing bagasse, conveying anobtained crushed substance into primary treating liquid, soaking for 20min to 30min when ultrasonic power is 80W to 120W and temperature is 40 to 50 DEG C, and next, filtering, so as to obtain a soaked material a; S2, conveying the soaked material a prepared in the step S1 into secondary treating liquid, cooking under heating, and next, filtering, so as to obtain a soaked material b, thereby completing the pretreatment procedure of preparing the bleach pulp. A coarse-pulp yield, a breaking length and a ring crush index which are obtained by the process, for preparing sugarcane bleach pulp andthe high-strength corrugated paper, of the pretreatment method are all obviously higher than the coarse-pulp yield, the breaking length and the ring crush index obtained in the prior art.

Description

【Technical field】 [0001] The invention belongs to the technical field of papermaking, and in particular relates to a pretreatment method for producing bleached pulp for high-strength corrugated paper. 【Background technique】 [0002] The current pulp production methods mainly include chemical, semi-chemical, mechanical and chemical-mechanical processes. Among them, chemical pulping occupies a dominant position among many pulping methods at present. The pulp prepared by chemical cooking is called bleached sugarcane pulp. The low brightness of bleached sugarcane pulp limits its application. Bleached sugarcane pulp generally needs to be bleached to produce higher-grade paper. [0003] With the continuous expansion of the paper industry and the continuous expansion of the application of pulp, the supply of wood, which was originally the main raw material for papermaking, is gradually in short supply, resulting in excessive deforestation and affecting the ecological environment. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C5/00D21B1/02
Inventor 古金荣古丰铭
Owner 广西金荣纸业有限公司
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