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Short linen viscose fiber and preparation method thereof

A technology of viscose staple fiber and hemp material, which is applied to artificial filaments made of viscose, pretreatment with acidic compounds, pulp bleaching, etc., which can solve the problems of high cooking intensity, large material consumption, and long time, and achieve Solve the cumbersome cooking process, solve the effect of high cooking intensity and short production cycle

Active Publication Date: 2012-11-21
潍坊欣龙生物材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are some existing techniques for producing viscose fiber using hemp plants as raw materials, and the whiteness, strength and fiber elongation of the produced viscose fiber are not ideal; and its technology is also relatively complicated, and the production The consumption of materials in the fiber is relatively large, which affects people's utilization of hemp plants, and also affects the production and quality of viscose fibers to a certain extent.
For example, the Chinese patent No. ZL200410004397.8 discloses a method for preparing hemp viscose fiber pulp and functional fibers. The cooking strength is high, the cooking process is cumbersome, the time is long, and a large amount of black liquor is produced after cooking.

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

[0036] A preparation method of hemp viscose staple fiber, including: after hemp material is prepared, pretreatment, water washing, steaming, washing, pulping, sand removal, concentration, alkali refining, bleaching, acid treatment, washing, and post selection Desanding, concentration, papermaking, dipping, squeezing, crushing, aging, yellowing, grinding, dissolving, filtering, deaeration, filtering, spinning, drawing, cutting, post-processing, drying, and packaging to obtain the finished product, the specific process as follows:

[0037] (1) Pretreatment: After cutting and washing the hemp, sulfuric acid is added to the pretreatment tower to adjust the pH value to 2, the amount of ozone added is 3% of the relative dry raw material quality, the treatment time is 10min, the pressure is 0.5MPa, and the temperature is 40°C.

[0038] (2) Washing with water: the temperature is 50°C, and the mass of the slurry after washing: total cellulose mass percentage 81.2%, lignin mass percentage 1...

Embodiment 2

[0058] A preparation method of hemp viscose staple fiber, including: after hemp material is prepared, pretreatment, water washing, cooking, washing, pulping, sand removal, concentration, alkali refining, bleaching, acid treatment, washing, and post-selection Finished products are prepared by de-sanding, concentration, papermaking, dipping, pressing, crushing, aging, yellowing, grinding, dissolving, filtering, defoaming, filtering, spinning, drawing, cutting, post-processing, drying and packaging.

[0059] (1) Pretreatment: After cutting and washing the hemp, sulfuric acid is added to the pretreatment tower to adjust the pH value to 3, the amount of ozone added is 1% of the relative dry raw material quality, the treatment time is 20min, the pressure is 0.8MPa, and the temperature is 50°C.

[0060] (2) Washing with water: the temperature is 60℃, the quality of the slurry after washing: the mass percentage of total cellulose 82.2%, lignin mass percentage 1.9%, pectin mass percentage 0...

Embodiment 3

[0080] A preparation method of hemp viscose staple fiber, including: after hemp material is prepared, pretreatment, water washing, cooking, washing, pulping, sand removal, concentration, alkali refining, bleaching, acid treatment, washing, and post-selection Finished products are prepared by de-sanding, concentration, papermaking, dipping, pressing, crushing, aging, yellowing, grinding, dissolving, filtering, defoaming, filtering, spinning, drawing, cutting, post-processing, drying and packaging.

[0081] (1) Pretreatment: After cutting the hemp material and washing with water, add sulfuric acid to the pretreatment tower to adjust the pH value to 2, the ozone addition amount is 2% of the relative absolute dry raw material quality, the treatment time is 15min, the pressure is 0.7MPa, and the temperature is 45°C.

[0082] (2) Washing with water: the temperature is 55℃, the quality of the slurry after washing: the mass percentage of total cellulose 81.2%, lignin mass percentage 1.8%, ...

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Abstract

The invention discloses short linen viscose fiber and a preparation method thereof. The viscose fiber is produced by preparing linen pulp from linen and then using the linen pulp. The preparation method comprises the following steps of: pre-processing, washing, digesting, washing, pulping, degritting, concentrating, alkali refining, whitening, performing acid treatment, washing, finely selecting,degritting, concentrating, papermaking, soaking, squeezing, smashing, aging, yellowing, grinding, dissolving, filtering, defoaming, filtering, spinning, drafting, cutting off, performing post treatment, drying, packaging and the like. The preparation method has the advantages that: the performance of bacterial resistance and bacterial resistance of the linen fiber can be kept better, a finished product has high whiteness, the production period is short, the problems of large digesting intensity, complicated digesting process and the like are solved, and the pollution generated during production is low.

Description

Technical field [0001] The invention relates to a viscose fiber, in particular to a viscose short fiber produced from hemp material and a preparation method thereof, and belongs to the field of viscose fiber production. Background technique [0002] With the improvement of people's living standards, the requirements for fabrics are getting higher and higher. Viscose fiber fabric is recognized by consumers for its advantages of good moisture absorption and air permeability, and comfortable wearing. In addition to the advantages of ordinary viscose fiber, functional viscose fiber has its unique functionality as the biggest highlight of this type of fiber. The hemp fiber fabric has better moisture absorption and breathability than ordinary viscose fiber, and its anti-bacterial and antibacterial properties are outstanding. It has obvious killing effects on Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli, Candida albicans, etc. Deactivation. [0003] There are current...

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 Patents(China)
IPC IPC(8): D01F2/06C08B9/00D21C1/04D21C9/16D21C9/18
Inventor 逄奉建王乐军刘建华秦翠梅姜明亮王东卢海蛟
Owner 潍坊欣龙生物材料有限公司
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