A kind of viscose fiber manufacturing process

A technology of viscose fiber and manufacturing process, which is applied in the field of viscose fiber production and manufacturing process, which can solve the problems of the decrease of the rate of high-quality products, the influence of aging time on the quality of finished products, the improvement of quality or the rate of high-quality products, etc., and achieve the effect of reducing impurities

Active Publication Date: 2022-04-01
赛得利(江苏)纤维有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The patent with the publication number CN104831387A discloses a preparation process of a matting high-strength low-elongation viscose fiber. The main purpose is to produce a new type of viscose fiber that can meet people's requirements for natural products, but no improvement is proposed Measures to improve the quality or rate of superior products
[0005] The patent with the publication number CN101372766A discloses a process method for producing viscose fiber filaments by secondary dipping. The method is to reduce costs and reduce environmental pollution by producing viscose fiber filaments by secondary dipping. The way of filtration, the long aging time and the low content of alkali cellulose all directly affect the quality of the final product
[0006] In the actual viscose fiber production process, there are often situations where the product quality fluctuates too much, and the production is unstable, resulting in a decline in the rate of high-quality products in the product and unstable quality.

Method used

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  • A kind of viscose fiber manufacturing process

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Effect test

Embodiment 1

[0033] A viscose fiber manufacturing process, characterized in that: comprising the following steps,

[0034] Its technological process includes: feeding, impregnation, pressing, crushing, aging, yellowing, aging filtration, spinning, drawing, cutting, refining, drying, and packaging. The specific steps are:

[0035] S1. Feeding and impregnation: After the lye passes through a precipitation period, the lye passes through a microporous filter to filter impurities, and then puts the pulp into the lye for immersion to form a porridge;

[0036] S2. Squeezing: Press the completely soaked porridge obtained in step S1 through a press to separate the alkali cellulose from the lye to obtain alkali cellulose, and adjust the line pressure of the press in time to make it stable, so that the alkali cellulose The fiber content is controlled at 33.8%-34.8%;

[0037] S3, crushing, aging, and yellowing: the alkali cellulose obtained in step S2 is crushed, aged and depolymerized, then added to...

Embodiment 2

[0041] The rest of the present embodiment is the same as the first step of the embodiment, and the difference is that the number of times of filtration in step 4 is set to twice, and the KK filter is used as the main equipment for viscose filtration, and the KK filter can filter the viscose in the viscose. Impurities and gel particles, and the KK filter is automatically backwashed, and the backwashed viscose is recovered centrally, and returned to the system after treatment, saving costs and controlling the number of viscose particles after the second filtration within 40 , so as to ensure the quality of viscose.

Embodiment 3

[0043] The rest of this embodiment is the same as the second step of the embodiment, the difference is that the spinneret in step 4 is regularly cleaned, and the small holes of the spinneret are evenly distributed. If some small holes are blocked seriously, other small holes will be increased. The amount of viscose ejected from the hole increases the pressure of the barrel, which will easily cause the nozzle to leak glue, spinneret blockage, deformation, aging and glue leakage, which will affect the defects of the finished product. After ensuring the regular cleaning and cleaning quality of the spinneret, the daily The average number of head replacements dropped from 1088 to 561, and the defect reduction rate dropped from 34.54% to 3.52%.

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Abstract

The technical field of textile technology of the present invention specifically relates to a production process of viscose fiber. Drying and packaging, the specific steps are: S1, the pulp is put into the lye and soaked to form a pulp porridge; S2, the pulp porridge is pressed through a press to obtain alkali cellulose; S3, after crushing and aging, it is added to the yellowing machine for yellowing. chemical reaction; S4, enter the spinneret after maturation and filtration, and then regenerate in an acid bath to obtain cellulose fibers; S5, cut off after final drafting, and dry and pack after refining and washing. The present invention sets a precipitation period for the lye, automatically backwashes through the microporous filter and the KK filter, regularly cleans the spinneret, controls the dissolution and aging time of dilute alkali, stabilizes the line pressure of the press, and reduces the temperature of the yellowing machine wall Fluctuating measures stabilize quality, improve product quality, and reduce defect rate.

Description

technical field [0001] The invention relates to the technical field of textile technology, in particular to a viscose fiber manufacturing process. Background technique [0002] Viscose fiber is referred to as viscose fiber, also known as viscose silk, a kind of man-made fiber. Viscose fiber is the main variety of man-made fiber and the second largest chemical fiber variety in China. Its main raw material is chemical pulp, including cotton pulp and wood pulp. Natural cellulose is separated and regenerated through chemical reactions. As a result, the raw material used in China is mainly cotton pulp. [0003] Viscose fiber is a cellulose fiber. It is made of natural fibers (wood fibers, cotton linters) as raw materials, through alkalization, aging, sulfonation and other processes to make soluble cellulose xanthate, and then dissolved in dilute lye to make viscose. made by spinning. Using different raw materials and spinning processes, ordinary viscose fibers, high wet modul...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): D01F2/06C08B9/00
CPCD01F2/06C08B9/00
Inventor范海江王春利张学刚李文峰路宽陈忠刘河陈云谭卫国
Owner赛得利(江苏)纤维有限公司