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Pretreatment method of bleached pulp

A technology of pretreatment and immersion, applied in the field of papermaking, to achieve the effect of high softness

Active Publication Date: 2017-09-19
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

[0007] The invention provides a pretreatment method for bleached pulp to solve the problem of how to improve the yield and whiteness of hemp bamboo pulp and improve the quality of toilet paper production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] In an embodiment, the preparation method of the toilet paper prepared by bleaching process comprises the following steps:

[0027] S1: Cut Mazhu into pieces with a size of 20-30×2.8-3.7mm×1.2-2.5mm and pulverize them. The obtained pulverized product is transported to the primary pretreatment soaking solution A. The weight of the pulverized product is The ratio to the volume of the primary pretreatment immersion liquid A is 1:1.5-3.5, and the primary pretreatment immersion liquid A is in parts by weight, including the following raw materials: 6-10 parts of alkylphenol polyoxyethylene ether, 0.4 parts of triethanolamine -0.8 parts, 0.6-1.2 parts of sodium alkylbenzene sulfonate, 0.5-1 part of potassium lignosulfonate, 0.7-1.4 parts of lauric acid, 45-95 parts of water, in the ultrasonic power of 30-50W, the temperature is 43- Soak at 48°C for 26-40min, and then filter to obtain soaking material A;

[0028] S2: Transport the steeping material A prepared in step S1 to the ...

Embodiment 1

[0034] A preparation method of toilet paper prepared by bleaching process, comprising the following steps:

[0035] S1: Cut Mazhu into pieces with a size of 22×3.2mm×1.3mm and crush them. The obtained pulverized product is sent to the primary pretreatment infusion A. The volume ratio of A is 1:1.6, and the primary pretreatment immersion liquid A is in parts by weight, including the following raw materials: 6 parts of alkylphenol polyoxyethylene ether, 0.4 part of triethanolamine, and 0.6 part of sodium alkylbenzenesulfonate , 0.5 parts of potassium lignosulfonate, 0.7 parts of lauric acid, and 45 parts of water, soaked for 40 minutes at an ultrasonic power of 30W and a temperature of 43°C, and then filtered to obtain the soaking material A;

[0036] S2: Transport the soaking material A prepared in step S1 to the secondary pretreatment immersion liquid B, the ratio of the weight of the immersion material A to the volume of the secondary pretreatment immersion liquid B is 1:5.6,...

Embodiment 2

[0042] A preparation method of toilet paper prepared by bleaching process, comprising the following steps:

[0043] S1: Cut Mazhu into pieces with a size of 29×3.6mm×2.4mm and crush them. The obtained pulverized product is sent to the primary pretreatment infusion A. The volume ratio of A is 1:3.4, and the primary pretreatment immersion solution A is in parts by weight, including the following raw materials: 10 parts of alkylphenol polyoxyethylene ether, 0.8 part of triethanolamine, and 1.2 parts of sodium alkylbenzenesulfonate , 1 part of potassium lignosulfonate, 1.4 parts of lauric acid, and 95 parts of water, soaked for 26 minutes at an ultrasonic power of 50W and a temperature of 48°C, and then filtered to obtain the soaking material A;

[0044] S2: Transport the steeping material A prepared in step S1 to the secondary pretreatment immersion liquid B, the ratio of the weight of the steeping material A to the volume of the secondary pretreatment immersion liquid B is 1:12....

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PUM

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Abstract

The invention discloses a pretreatment method of bleached pulp. The method comprises the steps of S1, cutting dendrocalamus latiflorus munro into chips of dendrocalamus latiflorus munro and then smashing the chips of dendrocalamus latiflorus munro, delivering the obtained smashed chips of dendrocalamus latiflorus munro into primary pretreatment immersion liquid A, wherein the primary pretreatment immersion liquid A comprises alkylphenol polyoxyethylene, triethanolamine, sodium alkyl benzene sulfonate, potassium lignosulphonate, lauric acid and water; conducting soaking under an ultrasonic effect for 26-40 min, then conducting filtering to obtain a soaking material A; S2, delivering the soaking material A obtained in S1 to secondary pretreatment immersion liquid B, wherein the secondary pretreatment immersion liquid B comprises percarbamide, potassium hydroxide, 1,3-diketone, vanadium pentoxide, and water; conducting decocting at the temperature of 142-160 DEG C, and then conducting filtering to obtain a soaking material B to complete a pretreatment process. According to the pretreatment method of the bleached pulp, toilet paper manufactured subsequently through the bleached pulp obtained after the pretreatment is high in brightness, high in tensile index, and high in softness, and the toilet paper has no stimulus or adverse reactions to the human skin.

Description

【Technical field】 [0001] The invention belongs to the technical field of papermaking, and in particular relates to a pretreatment method for bleached pulp. 【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. [0003] Household paper, especially toilet paper, is a commonly used daily consumer product. However, due to the psychological need for whiteness and some physical indicators, it is usually made of pulp mainly made of bleached wood pulp. Even if all straw pulp is used to prepare toilet paper, bleached pulp is also used, but the yield and whiteness of the obtained ...

Claims

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Application Information

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IPC IPC(8): D21B1/02B27K9/00B27K3/50B27K3/52B27K5/00
CPCB27K3/50B27K3/52B27K5/001B27K5/0065B27K9/002B27K2200/15D21B1/021
Inventor 古金荣古丰铭
Owner 广西金荣纸业有限公司
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