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AssigneeToray Industries, Inc.
InventorsKeitaro Nabeshima, Katsushige Wanibe, Ryosuke Chono, Hiroaki Tatsumi, Tatsuaki Matsuda, Tsukasa Shiba
Estimating the term…
Crimped yarns that comprise a conjugate multifilament yarn having unique surface texture, dry touch, and stretchability; woven/knitted products comprising said crimped yarn; and production methods of crimped yarn as a conjugate multifilament yarn comprising polyester polymer components and has (a) number of crimps (CA): 2.5 crests/cm≦CA≦10 crests/cm, (b) number of developed crimps (CB): 8 crests/cm≦CB≦30 crests/cm, (c) shrinkage stress (TS): 0.0882≦TS (cN/dtex)≦0.221, (d) apparent shrinkage percentage (SC): 40%≦SC≦80%, and (e) shrinkage percentage of fiber in boiling water (SW): 2%≦SW≦8%, and produced by subjecting a crimp-forming conjugate multifilament yarn to relaxation-heat treatment.
A self-crimping yarn comprising crimp-forming conjugate multifilaments wherein said crimp-forming conjugate multifilaments comprise at least two polyester polymer components having different heat shrinking properties, and said polyester polymer components are adhered in parallel with each other or in a core-sheath configuration, said self-crimping yarn having latent ability to develop additional crimps by making use of said different heat shrinkage properties, and wherein said self-crimping yarn having existing crimps (a) is able to make additional crimps (b) according to the following equations:
A woven/knitted product comprising a yarn having a hollow structure, wherein said yarn comprises conjugate multifilaments with a twisted spiral multifilament aggregate, wherein its central portion comprises a hollow structure.
A composite yarn that is produced by twisting crimp-forming conjugate multifilament yarn A which consists of at least two polyester polymer components with different shrinkage properties and another polyester filament yarn B, wherein said composite yarn has a twisted spiral multifilament aggregate, and a hollow structure in its central portion.
A composite yarn that is produced by twisting a crimp-forming conjugate multifilament yarn comprising multifilaments having at least two polyester polymer components with different heat-shrinking properties and another polyester filament yarn, wherein:
Dependencies are inferred from the claim text.