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Sea-islands type composite fiber having excellent moisture absorbability, textured yarn, and fiber structure

A composite fiber and island-in-the-sea technology, which is applied in fiber processing, conjugated synthetic polymer artificial filament, transportation and packaging, etc., can solve the problems of stuffy heat, static electricity, insufficient hygroscopicity, etc., and achieve dissolution inhibition, less fluff, The effect of less uneven coloring

Active Publication Date: 2019-03-01
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to insufficient hygroscopicity, there are problems to be solved from the viewpoint of wearing comfort, such as stuffy feeling in high humidity weather in summer and static electricity in low humidity weather in winter.

Method used

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  • Sea-islands type composite fiber having excellent moisture absorbability, textured yarn, and fiber structure
  • Sea-islands type composite fiber having excellent moisture absorbability, textured yarn, and fiber structure
  • Sea-islands type composite fiber having excellent moisture absorbability, textured yarn, and fiber structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0145] Polyethylene terephthalate obtained by copolymerizing 30% by weight of polyethylene glycol (PEG6000S manufactured by Sanyo Chemical Industry Co., Ltd.) with a number average molecular weight of 8300 g / mol was used as an island component, and polyethylene terephthalate ( IV=0.66) As the sea component, they were vacuum-dried at 150° C. for 12 hours, and then supplied to an extrusion-type composite spinning machine according to the compounding ratio of 30% by weight of the island component and 70% by weight of the sea component, and they were separately melted, They were then flowed into the assembled figure 2 In the spin pack of the sea-island composite die shown in (a), the composite polymer flow was discharged from the discharge hole at a discharge rate of 25 g / min to obtain a spun sliver. Furthermore, on the distribution plate immediately above the discharge plate, an average of 18 distribution holes per one discharge hole for island components are drilled, and imag...

Embodiment 2～5

[0147] (Examples 2-5), (Comparative Example 1)

[0148]A false twist yarn was produced in the same manner as in Example 1, except that the ratio (T / R) of the outermost layer thickness T to the fiber diameter R was changed as shown in Table 1.

[0149] Table 1 shows the evaluation results of fiber properties and fabric properties of the obtained fibers. In Examples 2 to 5, as T / R becomes larger, the cracks of the sea component are reduced, and the color rendering property is improved. On the other hand, although the hygroscopicity after the hot water treatment becomes low, the hygroscopicity is good. In addition, in any case, the level dyeing property, the quality, and the feeling of dryness were all acceptable levels. On the other hand, in Comparative Example 1, although the color development, level dyeing property, quality, and dry feel were good, the volume swelling of the hygroscopic polymer of the island component was suppressed because of the large T / R. As a result, aft...

Embodiment 6～11

[0157] False twist yarns were produced in the same manner as in Example 1, except that the number and arrangement of island components in the distribution plate of the sea-island composite die described in Example 1 were changed as shown in Table 2.

[0158] Table 2 shows the evaluation results of fiber properties and fabric properties of the obtained fibers. Even when the number and arrangement of the island components are changed, there are few cracks in the sea component, and the hygroscopicity after hot water treatment is good. In addition, the color rendering property is also good, and the level dyeing property, quality, and dry feel are all acceptable levels.

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Abstract

A sea-islands type composite fiber characterized in that an island component is a polymer having moisture absorbability, the ratio (T / R) of the thickness (T) of an outermost layer to the diameter (R)of the fiber on a transverse cross-section of the fiber is 0.05 to 0.25, and the moisture absorption ratio difference (delta MR) after a hot water treatment is 2.0 to 10.0%. The term thickness of an outermost layer refers to the difference between the radius of the fiber and the radius of a circumscribed circle formed by connecting apexes of island components located on an outermost periphery, andrepresents the thickness of a sea component in the outermost layer. Provided is a sea-islands type composite fiber which does not undergo the cracking of a sea component upon the volume expansion ofa moisture-absorbable polymer that serves as an island component during a hot water treatment such as a dyeing treatment, rarely undergoes the formation of dying specks or fluffs when the composite fiber is formed into a fiber structure such as a woven fabric or a knitted fabric, has excellent quality, is reduced in the elution of the moisture-absorbable polymer, also has excellent moisture absorbability even after a hot water treatment such as a dyeing treatment, and also has dry touch inherent to a polyester fiber when the sea component is polyester.

Description

technical field [0001] The present invention relates to a sea-island type composite fiber in which the island component is a polymer having hygroscopicity and is excellent in hygroscopicity. More specifically, it relates to an island-in-the-sea composite fiber capable of suppressing cracks in the sea component caused by the volume swelling of the hygroscopic polymer of the island component in hot water treatment such as dyeing, so in After being made into fiber structures such as woven fabrics and knitted fabrics, the dyeing unevenness and fluffing are less, and the quality is excellent, and the dissolution of hygroscopic polymers is suppressed, so it is also excellent in hygroscopicity after hot water treatment such as dyeing, and furthermore , In the case where the sea component is polyester, it can have both the original dry feeling of polyester fiber and can be used for clothing well. Background technique [0002] Polyester fibers are used in a wide range of application...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14D01F8/12D02G1/02D03D15/00D04B1/16
CPCD02G1/02D03D15/00D04B1/16D01F8/14D01F8/12D03D15/283D01D5/253D01D5/34D01F8/16D03D15/44Y10T428/2929Y10T442/45Y10T442/444D02G1/0206D10B2401/022
Inventor 鹿野秀和浜中省吾森冈英树堤贤一望月克彦
Owner TORAY IND INC
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