Method for preparing dyed wood pulp paper for nonwoven materials

A technology of non-woven materials and wood pulp paper, which is applied in the direction of textiles and paper making, paper making, paper machines, etc., can solve the problems of poor color fastness and color difference of wood pulp paper, and solve the problems of poor color fastness and color difference, water Improvement of immersion fastness and improvement of color difference

Active Publication Date: 2011-11-02
XINLONG HLDG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention adopts the dyeing method of direct dyeing and fixing agent, changes the traditional dyeing process in the papermaking industry, solves the problems of poor color fastness and color difference of wood pulp paper, and makes the wood pulp composite spunlace nonwoven material meet the quality requirements

Method used

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  • Method for preparing dyed wood pulp paper for nonwoven materials
  • Method for preparing dyed wood pulp paper for nonwoven materials
  • Method for preparing dyed wood pulp paper for nonwoven materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) get the red pine fluff pulp that the fiber length of 60% is greater than 2mm and mix with 40% coniferous wood pulp to obtain mixed wood pulp;

[0033] (2) loose pulp: put the mixed wood pulp obtained in step (1) into a loose pulp tank and add water for beating, the mass ratio of mixed wood pulp and water is 1: 120, so that the wood pulp fibers are evenly dispersed in water;

[0034] (3) Heating: heat the water in the slurry tank and keep it at 45-50°C;

[0035] (4) Dyeing: Add direct blue 2RL (direct blue 80) dyeing in the pulp tank, the add-on is 1.0% of the mixed wood pulp quality that step (1) obtains, after 20 minutes, add the formaldehyde-free fixing agent TF- 232, the addition is 2.0% of the mixed wood pulp quality that step (1) obtains, keeps 30 minutes;

[0036] (5), according to the papermaking process: stock tank→high fluid tank→laying net→suction→drying→rolling→slitting, input the dyeing slurry obtained in step (4) into the wire part of the paper machine...

Embodiment 2

[0040] (1) mixed pulp: get the red pine fluff pulp that the fiber length of 50% is greater than 2mm and mix with 50% coniferous wood pulp to obtain mixed wood pulp;

[0041] (2) loose pulp: put the mixed wood pulp obtained in step (1) into a loose pulp tank and add water for beating, the mass ratio of mixed wood pulp and water is 1: 150, so that the wood pulp fibers are evenly dispersed in water;

[0042] (3) Heating: heat the water in the slurry tank and keep it at 45-50°C;

[0043] (4) Dyeing: add direct blue 2RL (direct blue 80)+direct yellow RL (direct yellow 86) dyeing in bulk slurry tank, add-on is respectively 1.0% and 0.2% of the mixed wood pulp quality that step (1) obtains , after 20 minutes, add formaldehyde-free color-fixing agent TF-232, the addition is 2.0% of the mixed wood pulp quality that step (1) obtains, keep 20 minutes;

[0044] (5), according to the papermaking process: stock tank→high fluid tank→laying net→suction→drying→rolling→slitting, input the dyei...

Embodiment 3

[0048] (1) mixed pulp: getting mass percent is that 70% fiber length is greater than the red pine fluff pulp of 2mm and 30% coniferous wood pulp and mixes to get mixed wood pulp;

[0049] (2) loose pulp: put the mixed wood pulp obtained in step (1) into a loose pulp tank and add water for beating, the mass ratio of mixed wood pulp and water is 1: 160, so that the wood pulp fibers are evenly dispersed in water;

[0050] (3) Heating: heat the water in the slurry tank and keep it at 45-50°C;

[0051] (4) Dyeing: Add direct sunfast turquoise blue GL (direct blue 86) dyeing in the pulp tank, the addition is 0.5% of the mixed wood pulp quality that step (1) obtains, after 20 minutes, add formaldehyde-free solid color Agent TF-232, the addition is 2.0% of the mixed wood pulp quality that step (1) obtains, keeps 20 minutes;

[0052] (5), according to the papermaking process: stock tank→high fluid tank→laying net→suction→drying→rolling→slitting, input the dyeing slurry obtained in ste...

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Abstract

The invention discloses a method for preparing dyed wood pulp paper for nonwoven materials, which comprises the following steps of: (1) mixing red pine fluff pulp and coniferous wood pulp to obtain mixed wood pulp; (2) dispersing the pulp, namely putting the mixed wood pulp obtained in the step (1) into a pulp dispersing tank, and adding water for pulping, so that wood pulp fibers are dispersed in the water uniformly; (3) heating, namely heating the water in the pulp dispersing tank; (4) dyeing, namely dyeing dyes in the pulp dispersing tank for 15 to 30 minutes, adding a color fixing agent, and fixing colors for 20 to 30 minutes; and (5) conveying dyed slurry obtained in the step (4) into a fourdrinier part of a papermaking machine for forming, and squeezing, drying, coiling and slittingto obtain the dyed wood pulp paper for the nonwoven materials. Compared with imported wood pulp paper, the dyed wood pulp paper produced by the method has the advantages that: the color fastness to sunlight and water leaching fastness are improved greatly; indexes are higher than the level of foreign products; and the cost is reduced.

Description

technical field [0001] The invention relates to a preparation method of dyed wood pulp paper for nonwoven materials. Background technique [0002] Wood pulp composite spunlace nonwoven material is a kind of new nonwovens for medical and sanitary use made of wood pulp paper made of special natural wood pulp fibers and carded fiber web (viscose, polyester, etc.) through spunlace nonwoven technology. Materials and products are mainly used as disposable medical products such as surgical gowns, surgical sheets, and protective clothing. Before the present invention, there was no manufacturer in my country to specially produce wood pulp paper (comprising natural color and dyed wood pulp paper) for the production of spunlace nonwovens, and the products were all imported from abroad. Due to the limitations of the original wood pulp paper production process, the imported dyed wood pulp paper has poor color fastness (light fastness, water immersion, soaping, alcohol resistance, etc.) ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F11/00D21H21/28D21H11/00
Inventor 陈龙敏赵祥杨晓伟贾耀芳吴迪史振丁
Owner XINLONG HLDG GROUP
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