Polyamide crimped yarn, false-twisted yarn and fabric

The polyamide crimped yarn with controlled shrinkage and elongation properties addresses uneven dyeing and crimping issues in composite fibers, achieving high-quality, stretchable fabrics.

JP7885684B2Active Publication Date: 2026-07-07TORAY INDUSTRIES INC
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Patent Information

Application Number
JP2022515785
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2021-03-08
Filing Date
2022-03-04
Publication Date
2026-07-07
Estimated Expiration
2042-03-04

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Patent Text Reader

Abstract

The present invention provides a latently crimped polyamide conjugate fiber which is suppressed in shrinkage rate variation and has few crepes or wrinkles due to dyeing speck or crimp unevenness, thereby having good quality. A crimped polyamide yarn according to the present invention is formed of a side-by-side type or eccentric core-sheath type polyamide conjugate fiber, and has a wet heat shrinkage stress variation rate of 150% or less.
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Citation Information

Patent Citations

  • Side-by-side composite fiber and preparation method thereof

    CN109957856A

  • JP1971025531B1

  • JP1972002058B1

  • Two components conductive fiber

    JP1979002420A

  • Polyamide latent crimp yarn

    JP2009057679A