Lyocell crimped fiber

A technology of crimping fibers and fibers, which is applied in the field of lyocell fibers, can solve problems such as non-excellence, and achieve the effect of improving expansion performance and good physical properties

Active Publication Date: 2017-08-18
KOLON IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In the case of conventional lyocell fibers, the blooming properties due to the formation of crimps are not excellent

Method used

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  • Lyocell crimped fiber

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0062] A cellulose pulp with a degree of polymerization (DPw) of 820 and an α-cellulose content of 93.9% and NMMO / H with a propylate content of 0.01% by weight 2 O mixed solvents (90 / 10 by weight) were mixed to prepare a 12% by weight spinning dope for preparing lyocell fibers.

[0063] First, the spinning solution was kept at a spinning temperature of 110° C. in the spinning nozzle of the spinneret, and the single fineness of the filament was 3.37 denier while adjusting the discharge amount of the spinning solution and the spinning speed. The spinning solution is spun. The filamentous spinning solution discharged from the spinning nozzle is fed into the solidification solution of the solidification bath through the air gap part. The spinning dope was first solidified in the air gap portion using cooling air at a temperature of 8° C. and a wind speed of 10 m / s.

[0064] The curing solution contained 85% by weight water and 15% by weight NMMO at 25°C. The concentration of th...

preparation example 2 to 6

[0068] Using the same method as Preparation Example 1 to manufacture lyocell crimped fibers, the difference is to change the pressure of the press roller, thus obtaining the number of crimps as 15 (ea / inch), 20 (ea / inch), 25 (ea / inch) ), 30 (ea / inch) and 39 (ea / inch) of Preparative Example 2 to Preparative Example 6. However, even when the pressure of the press roll became 39 ea / inch or more, the number of crimps did not increase any more. Therefore, in the production example, the crimp number variation was as high as 39 ea / inch.

example 1 to example 3

[0070] Lyocell crimped fibers (Examples 1 to 3) with crimp numbers of 25 (ea / inch), 30 (ea / inch) and 39 (ea / inch) were prepared using the same method as Preparation Example 4 to Preparation Example 6, different The point is that by using a steam box at 1.0kgf / cm 2Steam (120° C.) was provided under pressure to heat set the lyocell fibers before they passed through the press rolls in the stuffing box.

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Abstract

The present invention relates to a lyocell crimped fiber, which is manufactured by crimping a lyocell multi-filament prepared by spinning a lyocell spinning dope containing a cellulose pulp and an aqueous solution of N-methylmorpholine-N-oxide (NMMO), wherein the lyocell crimped fiber has a blowing index of 800-2,000.

Description

technical field [0001] The present invention relates generally to lyocell fibers, and more particularly to lyocell crimped fibers. Background technique [0002] Fibers are flexible and thin linear objects, and have a very large length-to-thickness ratio in shape, ie, a very large fineness. Fiber can be divided into long fiber, quasi-long fiber and short fiber in terms of shape, and can be divided into natural fiber and artificial fiber in terms of raw materials. [0003] Fiber has been closely related to human life since the past. Early fibers were mainly used as raw materials for clothing and were natural fibers such as cotton, hemp, wool, and silk fibers. However, according to the development of science and technology since the industrial revolution, the use of fibers has expanded to industrial materials in addition to materials for coating. In addition, recently, the field of artificial fibers has been fully developed in order to meet the rapidly increasing demand for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F2/00D01F2/10
CPCD01F2/00D01F2/10D02G1/12D01F11/02
Inventor 金圣勋郑永汉
Owner KOLON IND INC
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