Preparation method of unbleached pulp for high-strength corrugated paper

A technology of natural color pulp and corrugated paper, applied in pulp beating/refining methods, non-woody plant/crop pulp, paper, etc., can solve the problems of low ring pressure index and long breakage of high-strength corrugated paper

Inactive Publication Date: 2018-02-09
广西金荣纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with the traditional chemical pulping method, the water consumption per ton of paper is greatly reduced, but there are ...

Method used

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  • Preparation method of unbleached pulp for high-strength corrugated paper
  • Preparation method of unbleached pulp for high-strength corrugated paper

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preparation example Construction

[0027] In an embodiment, the preparation method of the high-strength corrugated paper includes the following steps:

[0028] S1: Grinding the bagasse, and transporting the resulting crushed product to the primary treatment liquid, the weight ratio of the bagasse crushed product to the primary treatment liquid is 1:1.2-4, and the primary treatment liquid is expressed in parts by weight as a unit, including the following raw materials: polyethylene glycol 3-6 parts, fatty alcohol polyoxyethylene ether 4-8 parts, fatty alcohol polyoxyethylene ether ammonium sulfate 1-2 parts, sodium alkyl succinate sulfonate 2- 4 parts, 0.1-0.2 parts of cellulase, 50-120 parts of water, soaking for 20-30min at an ultrasonic power of 80-120W and a temperature of 40-50°C, and then filtering to obtain the soaking material a;

[0029] 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 li...

Embodiment 1

[0033] A method for preparing high-strength corrugated paper, comprising the following steps:

[0034] 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 1:1.3, and the primary treatment liquid is in parts by weight , including the following raw materials: 3 parts of polyethylene glycol, 5 parts of fatty alcohol polyoxyethylene ether, 1 part of fatty alcohol polyoxyethylene ether ammonium sulfate, 2 parts of sodium alkyl succinate sulfonate, 0.1 part of cellulase, 50 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;

[0035] 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 secondary treatmen...

Embodiment 2

[0039] A method for preparing high-strength corrugated paper, comprising the following steps:

[0040] 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: 6 parts of polyethylene glycol, 8 parts of fatty alcohol polyoxyethylene ether, 2 parts of fatty alcohol polyoxyethylene ether ammonium sulfate, 4 parts of sodium alkyl succinate sulfonate, 0.2 part of cellulase, 120 parts of water Parts were soaked for 20 minutes at an ultrasonic power of 120W and a temperature of 50°C, and then filtered to obtain the impregnated material a;

[0041] 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 tre...

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Abstract

The invention discloses a preparation method of an unbleached pulp for high-strength corrugated paper, and belongs to the technical field of papermaking. The high-strength corrugated paper is preparedby the steps of secondary pretreatment, pulp grinding, pressure filtration and the like. The coarse pulp yield of the unbleached pulp prepared with the method provided by the invention is obviously higher than that of the coarse pulp prepared in the prior art; and the process is in line with the industrial policy of national resource saving, environmental protection, circular economy, energy saving and emission reduction. Bagasse and other rich and abandoned material resources are developed and utilized, and the economic efficiency is improved.

Description

【Technical field】 [0001] The invention belongs to the technical field of papermaking, and in particular relates to a method for preparing natural color paste 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 natural pulp. The low brightness of natural pulp limits its application. Generally, natural pulp can only be produced after bleaching to produce higher-grade paper. If the whiteness of the natural pulp can be improved during the pulping process, the trouble of subsequent bleaching can be saved, the production process can be simplified, the production cost can be reduced, and the use value of the natural pulp can be increased. [0003] In the production process of natural pulp, for wood raw...

Claims

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Application Information

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IPC IPC(8): D21H11/12D21H17/34D21H17/36D21H21/14D21D1/20D21C5/00
CPCD21H11/12D21C5/00D21D1/20D21H17/34D21H17/36D21H21/14
Inventor 古金荣古丰铭
Owner 广西金荣纸业有限公司
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