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Conjugate fiber with moisture-absorbed elongation effect and yarn

A composite fiber, yarn technology, applied in the direction of fiber processing, filament/thread forming, yarn, etc.

Inactive Publication Date: 2019-10-01
SHINKONG SYNTHETIC FIBERS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, there is no disclosure of fibers that elongate after absorbing moisture and return to their original length after dehumidification (ie drying)

Method used

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  • Conjugate fiber with moisture-absorbed elongation effect and yarn
  • Conjugate fiber with moisture-absorbed elongation effect and yarn
  • Conjugate fiber with moisture-absorbed elongation effect and yarn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Use nylon 6 and polypropylene to melt at 275°C, use an eccentric sheath type spinning nozzle, nylon 6 as the sheath, polypropylene as the core, with a compound ratio of 70:30, to form an eccentric sheath type composite fiber, which is cooled. After curing and oiling, the yarn was wound at a speed of 3700 m / min to obtain a hygroscopic stretch composite fiber of 75d / 72f HOY. The results are shown in Table 1.

Embodiment 2

[0033] Use nylon 6 and polypropylene to melt at 275°C, use an eccentric sheath type spinning nozzle, nylon 6 as the sheath, polypropylene as the core, with a compounding ratio of 70:30 to form an eccentric sheath type composite fiber, which is cooled. After curing and oiling, the yarn was preheated at a speed of 2500 m / min in the first roll at a temperature of 60°C, and then subjected to a stretching heat treatment between the second rolls heated at a temperature of 130°C at a speed of 4000 m / min. (Drawing ratio 1.6 times), it was wound up, and the hygroscopic stretch conjugated fiber of 75d / 72f SDY was obtained.

Embodiment 3

[0035] Use nylon 6 and polypropylene to melt at 275 ° C, use an eccentric core sheath type spinning nozzle, nylon 6 is the sheath, polypropylene is the core, and the composite ratio is 70:30, and the eccentric core sheath type composite fiber is formed. After cooling and solidifying, after imparting the oil, the yarn was wound at a speed of 2500m / min to obtain a composite fiber of 120d / 72f POY, which was then processed at a processing speed of 500m / min, a hot plate temperature of 160°C, and an elongation ratio of 1.6. The twisting process was followed, and it was coiled to obtain a hygroscopic stretch composite fiber of 75d / 72f DTY.

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PUM

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Abstract

The present invention relates to a conjugate fiber with moisture-absorbed elongation characterized by comprising a polyamide-containing component and a polyolefin-containing component. The conjugate fiber consists of the configuration of sun-moon side-by-side type or the configuration of eccentric core-sheath type. The conjugate fiber according to the present invention has a moisture-absorbed elongation effect. The length of the conjugate fiber increases by water-absorbing or moisture-absorbing, and the fiber recovers to original length after moisture-releasing.

Description

technical field [0001] The invention relates to a composite fiber which has the effect of hygroscopic elongation, its elongation increases with moisture absorption or water absorption, and returns to its original length after dehydration. More specifically, the present invention relates to a composite fiber having a hygroscopic elongation effect, which has a hygroscopic elongation effect after being dyed and processed. The present invention also relates to yarns comprising such composite fibers. Background technique [0002] US patent application US 5534339 A discloses a conjugated fiber containing polyamide and polyolefin polymer, which is produced by a melt-blown method, and the cross-section of the conjugated fiber is side-by-side, concentric, eccentric, Split type or island type, mainly used in weaving; but it does not disclose that the yarn length will change with humidity. [0003] Taiwan patent application TW 200804640 A describes a composite fiber containing polyam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/32D01D5/34D02G3/02D02G3/44D01F8/06D01F8/12D01F8/14
CPCD01D5/32D01D5/34D01F8/06D01F8/12D01F8/14D02G3/02D02G3/44D10B2321/021D10B2321/022D10B2401/02D10B2401/06D01D5/22D10B2331/02D10B2401/021D10B2401/14
Inventor 涂益仁吴国忠
Owner SHINKONG SYNTHETIC FIBERS