Dope for spinning lyocell, method for preparing a lyocell filament fiber using same, and method for preparing a lyocell staple fiber using same

A technology of soluble fiber and filament fiber, which is applied in the direction of single-component cellulose rayon, rayon made of viscose, spinning machine, etc., which can solve complex manufacturing process, fabric weight reduction, surface touch Product quality decline and other problems, to achieve the effect of excellent final product quality and excellent surface touch

Active Publication Date: 2013-04-03
KOLON IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, due to the high degree of orientation of lyocell fibers and the weak bonding force between fibrils, a large number of fibrils can be formed on the surface, so lyocell fibers have the disadvantages of surface touch and quality of final products.
Not only that, in order to remove the fibrils from the soluble fibers, it is necessary to add processes such as acid cellulase treatment, which complicates the manufacturing process and increases the production cost. In the process of removing fibrils, fabric weight loss or fiber loss may occur. Problems such as reduced characteristics

Method used

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  • Dope for spinning lyocell, method for preparing a lyocell filament fiber using same, and method for preparing a lyocell staple fiber using same
  • Dope for spinning lyocell, method for preparing a lyocell filament fiber using same, and method for preparing a lyocell staple fiber using same
  • Dope for spinning lyocell, method for preparing a lyocell filament fiber using same, and method for preparing a lyocell staple fiber using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] Example 1: Manufacturing Dissolvable Filament Fibers Using Cotton Linter Slurry

[0080] Put the cotton linter slurry (provided by Mint) with a degree of polymerization (DP) of 1200 into a pulverizer equipped with a 100-mesh filter to produce a slurry powder with a diameter of less than 1700μ.

[0081] The above-mentioned slurry powder was swollen in a 50% by weight NMMO aqueous solution. At this time, the content of the slurry in the NMMO aqueous solution was 6% by weight, and an oxidation inhibitor was added in an amount of 0.01% by weight relative to the cotton linter.

[0082] While maintaining the internal temperature of the swollen slurry at 90°C, inject it into a mixer with an absolute pressure of 50mmHg at a rate of 16kg / hour using a rotary piston pump, and remove excess water to make 50% by weight of NMMO The aqueous solution was an 89% by weight NMMO aqueous solution, and after the slurry was completely dissolved, the spinning dope was discharged through the ...

Embodiment 2

[0086] Example 2: Manufacturing Dissolvable Filament Fibers Using Cotton Linter Slurry

[0087] Dissolving multifilament fiber precursors were obtained in the same manner as in Example 1 except that a cotton linter slurry having a degree of polymerization (DP) of 800 was used.

Embodiment 3

[0088] Example 3: Production of Staple Fibers Using Cotton Linter Slurry

[0089] Put the cotton linter slurry (provided by Mint) with a degree of polymerization (DP) of 1200 into a pulverizer equipped with a 100-mesh filter to produce a slurry powder with a diameter of less than 1700 μm.

[0090] The above-mentioned slurry powder was swollen in a 50% by weight NMMO aqueous solution. At this time, the content of the slurry in the above-mentioned NMMO aqueous solution was 6% by weight, and 0.01% of an oxidation inhibitor was added with respect to the weight of the above-mentioned cotton linter.

[0091] While maintaining the internal temperature of the above-mentioned swollen slurry at 90° C., inject it into a mixer with an absolute pressure of 50 mmHg at a rate of 16 kg / hour using a rotary piston pump, and make 50% by weight after removing excess water. The NMMO aqueous solution becomes an 89% by weight NMMO aqueous solution, and after the slurry is completely dissolved, the ...

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Abstract

This disclose relates to dope for spinning lyocell including cotton linter pulp and an aqueous solution of N-methylmorpholine-N-oxide (NMMO), a method for manufacturing lyocell filament fiber using the dope, lyocell filament fiber manufactured by the method, a method for manufacturing lyocell staple fiber using the dope, and lyocell staple fiber obtained by the manufacturing method. According to the present invention, fiber that exhibits a low orientation degree and fibrillation degree, and a high elongation, and thus may be applied for fiber for high grade clothing, may be provided without conducting additional processes.

Description

technical field [0001] The present invention relates to a dope for spinning lyotropic fibers, a method for producing lyofilament fibers using the dope, and a method for producing soluble staple fiber food using the dope. More specifically, to provide a dope for lyosol fiber spinning capable of producing lyosol fibers having a low degree of orientation and fibrillation without going through an additional process. It exhibits high elongation at the same time, and can be used as a fiber for high-grade clothing. In addition, it also provides a method for producing soluble filament fibers using the above coating and a method for producing soluble staple fibers using the above coating. Production method. Background technique [0002] Fiber refers to a natural or artificial thread-like object that is soft and slender from the outside and has a large ratio of length to thickness. According to the form, the fiber can be divided into long fiber, semi-long fiber and short fiber, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F2/08D01D5/06D01F2/00D02G1/00D01G1/04
CPCD01H1/14D01D5/26D01D5/22D01D5/06D01F2/00D01F2/08D04H1/067D02G1/00D01G1/04Y10T428/2909
Inventor 金优哲李相牧郑钟喆秦尚佑
Owner KOLON IND INC
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