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US 2022/0186404 A1Published application
Artificial hair fibers
AssigneeDenka Company Limited
InventorsTakashi MURAOKA, Atsushi TAKEI
Life of this patent
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Abstract
An artificial hair fiber suppressed in formation of nodes is provided. An artificial hair fiber is structured with a fiber of drawn resin composition; wherein: when an initial tensile stress of undrawn fiber at 100° C. is taken as F0, and a tensile stress when drawn by 2.5 times is taken as F1, F1/F0 of an undrawn fiber obtained by spinning the resin composition is 1.2 or more.
Claims5
An artificial hair fiber structured with a fiber of drawn resin composition;
- wherein:
- when an initial tensile stress of undrawn fiber at 100° C. is taken as F0, and a tensile stress when drawn by 2.5 times is taken as F1,
- F1/F0 of an undrawn fiber obtained by spinning the resin composition is 1.2 or more.
Dependencies are inferred from the claim text.