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Elastomeric core-sheath conjugate fiber

A composite fiber and elastomer resin technology, applied in fiber processing, conjugated synthetic polymer artificial filament, clothing, etc., can solve the problems of low transparency, small blank thickness, weak support, etc., and achieve high transparency, Thin effect

Active Publication Date: 2008-09-10
GUNZE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, SCY and DCY generally have excellent support due to their high stretchability, but there are problems that the thickness of the blank is easy to increase, the sense of transparency is low, and the manufacturing cost is increased
[0004] In addition, after crimping the above-mentioned composite fiber, it has the characteristics of thinner material thickness and higher transparency compared with SCY and DCY. Compared with SCY and DCY, the support is weaker, so it is difficult to meet the current market demand for high support requirements

Method used

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  • Elastomeric core-sheath conjugate fiber
  • Elastomeric core-sheath conjugate fiber
  • Elastomeric core-sheath conjugate fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Melt thermoplastic polyurethane and polyester-based elastomer at 200°C and 195-210°C respectively, use a spinneret with two composite nozzles heated to 195°C, use thermoplastic polyurethane as the core part, and polyester-based elastomer as the sheath Partial way compound spinning is non-crimp expression type (concentric circle). In the cross-section of the conjugate fiber, the area ratios of the thermoplastic polyurethane and the polyester-based elastomer vary depending on the discharge ratio of the gear pump for each component.

[0072] The discharge amount was adjusted so that the stretched monofilament was 24d.

[0073] At a winding speed of 500 m / min, the adhesive silicone-based oil agent was wound up in an unstretched state, stretched in another subsequent process, and aged at 80°C and a dew point of 10°C for 24 hours.

[0074] A cross-sectional photograph of the obtained composite fiber is shown in figure 2 . The diameter of the fiber was 61 μm, and the occup...

Embodiment 2

[0081] Use the composite fiber of embodiment 1, weave tubular braided fabric through single-side weaving (plain weaving) with single-needle cylinder knitting machine, after toe, jumpsuit are sewed up according to conventional method, carry out dyeing (light brown; flesh-colored (carlo) )), heat-setting with a foot-shaped mold to make pantyhose.

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Abstract

The invention provides a conjugate fiber excellent in elastic extensibility and transparency. The invention relates to a highly shrinkable conjugate fiber containing an elastomeric resin (A) exhibiting elastic extensibility and an elastomeric resin (B) exhibiting elastic extensibility and having an elongation set of 25 to 70% and a tensile elongation of 100 to 800%, wherein the resin (A) is contained in the core and the resin (B) is contained in the sheath; and a process for production of the conjugate fiber.

Description

technical field [0001] The present invention relates to raw materials for stretchable clothing such as socks and pantyhose (PS). Background technique [0002] Stretchable fibers are often used as conventional fibers for pantyhose. As the stretchable fiber, for example, a single-covered yarn (SCY) in which one or more nylon fibers are wound on a polyurethane fiber, and a double-covered yarn (DCY) in which their twist directions are double wound (for example, patent document 1, 2, etc.). Or use a material obtained by crimping a conjugate fiber, which has a structure in which stretchable fibers (polyurethane, etc.) and thermoplastic fibers (polyamide, etc.) are continuously bonded in the length direction of the fiber (for example, patent Documents 3 to 7, etc.). With regard to these fibers, a large number of fibers improved in accordance with the stretch properties and strength of the target clothing have been reported. [0003] However, SCY and DCY generally have excellent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/04A41B11/00A41D31/00
CPCA41B17/00D01F8/12D01F8/14D01F8/16Y10T428/2969Y10T428/2933Y10T428/2967D01F8/04D01D5/28
Inventor 塚田章一柳泽博文
Owner GUNZE LTD