Preparation method of low-odor viscose fibers

A viscose fiber, low odor technology, applied in the field of chemical fiber processing, can solve the problems of limiting the amount of viscose fiber used, reducing fiber odor, heavy metal pollution, etc., to optimize the post-processing time, reduce fiber odor, and reduce the effect of odor grade.

Active Publication Date: 2021-03-30
赛得利(福建)纤维有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, because viscose fiber has excellent hygroscopicity, air permeability and other properties, and the price is cheaper than pure cotton fiber, it has been widely used in the fields of textile, non-woven and sanitary materials, but in the field of non-woven dry towels There is a problem that the finished cloth samples will produce peculiar smell after being soaked in hot water, which limits the usage of viscose fiber by some downstream users
[0003] Existing public document " manufacture method of odorless viscose fiber " (artificial fiber [J], 2001,31 (03): 31-32+25) adds trace amount of copper ion after refining and bleaching, before oiling, to make Odorless viscose fiber, but the copper ions added in this method will have the risk of heavy metal pollution after accumulating a certain amount
[0004] "Research on Odor Elimination of Viscose Staple Fiber" (Man-made Fibers [J], 2017, 47(05): 10-12.) analyzed the reasons for the odor of fibers, and proposed to change the three washings of the refining process into pickling (H 2 SO 4 ) to eliminate the peculiar smell, but it is found in the test of this application that the residual peculiar smell in the fiber cannot be significantly weakened by using this method, so a new solution is needed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) Preparation of viscose spinning stock solution: use dissolving wood pulp pulp with a whiteness of 89%, a cellulose content of 90%, and a polypentose content of 3% as a raw material, which includes dipping, pressing, crushing, and aging Viscose spinning stock solution is prepared through the steps of viscose, yellowing, dissolving and ripening, and mixed evenly with titanium dioxide dispersion, and then sent to the spinning machine; the mass ratio of titanium dioxide and methyl cellulose in the viscose solution is 0.6:100.

[0046] (2) Viscose spinning:

[0047] After the spinning stock solution is sent to the spinning machine, it is sprayed out from the spinneret by the metering pump, reacts with the coagulation bath in the acid bath, coagulates and regenerates the primary fibers; the coagulated and regenerated primary fibers are collected into long strands through the godet roller and the second bath The tow goes to the drafting machine, where it is drawn and orien...

Embodiment 2

[0052] (1) Preparation of viscose spinning stock solution: use dissolving wood pulp pulp with a whiteness of 89%, a cellulose content of 90%, and a polypentose content of 3% as a raw material, which includes dipping, pressing, crushing, and aging Viscose spinning stock solution is prepared through the steps of viscose spinning, yellowing, dissolving and ripening, and mixed evenly with titanium dioxide dispersion, and then sent to the spinning machine; the mass ratio of titanium dioxide and methylcellulose in the viscose solution is 0.9:100.

[0053] (2) Viscose spinning:

[0054] After the spinning stock solution is sent to the spinning machine, it is sprayed out from the spinneret by the metering pump, reacts with the coagulation bath in the acid bath, coagulates and regenerates the primary fibers; the coagulated and regenerated primary fibers are collected into long strands through the godet roller and the second bath The tow goes to the drafting machine, where it is drawn a...

Embodiment 3

[0059] (1) Preparation of viscose spinning stock solution: use dissolving wood pulp pulp with a whiteness of 89%, a cellulose content of 90%, and a polypentose content of 3% as a raw material, which includes dipping, pressing, crushing, and aging Viscose spinning stock solution is prepared through the steps of viscose spinning, yellowing, dissolving and ripening, and mixed evenly with titanium dioxide dispersion, and then sent to the spinning machine; the mass ratio of titanium dioxide and methylcellulose in the viscose solution is 0.9:100.

[0060] (2) Viscose spinning:

[0061] After the spinning stock solution is sent to the spinning machine, it is sprayed out from the spinneret by the metering pump, reacts with the coagulation bath in the acid bath, coagulates and regenerates the primary fibers; the coagulated and regenerated primary fibers are collected into long strands through the godet roller and the second bath The tow goes to the drafting machine, where it is drawn a...

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Abstract

The invention relates to the technical field of chemical fiber processing, in particular to a preparation method of low-odor viscose fibers. The preparation method comprises the following steps of selecting dissolved wood pulp with high whiteness, high methylcellulose content and low pentosan content as a raw material, preparing a viscose spinning solution, uniformly mixing with a titanium dioxidedispersion solution, feeding into a spinning machine, and solidifying to regenerate nascent fibers; and enabling the nascent fibers to be drafted and oriented to form fibers with certain strength, the fibers entering a fluff tank and a refiner after being cut off, and preparing the low-odor viscose fibers by adopting post-treatment processes such as desulfurization, water washing, bleaching, oiling, drying and the like. The low-odor viscose fiber prepared by the invention is relatively high in whiteness, extremely low in defect content, extremely low in residual sulfur content and low in odor, and can be applied to the fields of non-woven fabrics and medical sanitary materials with strict odor requirements; and the problem of peculiar smell generated when the viscose fibers are applied tothe field of dry tissues is solved, so that the application field of the viscose fibers is widened.

Description

technical field [0001] The invention relates to the technical field of chemical fiber processing, in particular to a preparation method of low-odor viscose fiber. Background technique [0002] In recent years, because viscose fiber has excellent hygroscopicity, air permeability and other properties, and the price is cheaper than pure cotton fiber, it has been widely used in the fields of textile, non-woven and hygiene materials, but in the field of non-woven dry towels There is a problem that the finished cloth samples will produce peculiar smell after being soaked in hot water, which limits the usage of viscose fiber by some downstream users. [0003] Existing public literature " manufacturing method of odorless viscose fiber " (artificial fiber [J], 2001,31 (03): 31-32+25) adds trace amount of copper ion after refining and bleaching, before oiling, to make Odorless viscose fiber, but the copper ions added in this method will have the risk of heavy metal pollution after ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F2/08D01F2/06D01F11/02D06M11/38D06M11/53D06M15/53D06L4/23D06L4/13D06M101/06
CPCD01F2/08D01F2/06D01F11/02D06M11/38D06M11/53D06M15/53D06L4/23D06L4/13D06M2101/06Y02P70/62
Inventor 林庆辉郭巍黄志冰姚锰郑超吴晓东
Owner 赛得利(福建)纤维有限公司
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