Spun yarn and woven or knitted fabric
AssigneeToray Industries, Inc.
InventorsMasahiro Taninomiya, Teruhiko Kasahara, Michiaki Chiba, Shunma Miyauchi
Life of this patent
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Abstract
A spun yarn includes 20 to 80% by mass of a polyester-based fiber having a flat multifoliar cross section and 20 to 80% by mass of a cellulose-based fiber. A cross-sectional shape of the polyester-based fiber having a flat multifoliar cross section is a flat shape having 6 or more convex parts on a circumference thereof. The polyester-based fiber having a flat multifoliar cross section has the specific flat ratio and specific modified shape ratio.
Claims21
-6. (canceled)
A spun yarn comprising 20 to 80% by mass of a polyester-based fiber having a flat multifoliar cross section and 20 to 80% by mass of a cellulose-based fiber, wherein a cross-sectional shape of the polyester-based fiber having a flat multifoliar cross section is a flat shape having 6 or more convex parts on a circumference thereof, and when a maximum length of a cross section of the polyester-based fiber having a flat multifoliar cross section is taken as A, a maximum width of the cross section of the polyester-based fiber having a flat multifoliar cross section is taken as B, a length of a line connecting vertexes of convex parts adjacent to each other in a maximum concave-convex part is taken as C, and a length of a perpendicular line drawn from the line connecting the vertexes of the convex parts adjacent to each other in the maximum concave-convex part to a bottom point of a concave part is taken as D, a flat ratio defined by formula (1) and a modified shape ratio defined by formula (2) are satisfied:
- Flat ratio(A/B)=2.0 to 3.0 (1)
- Modified shape ratio(C/D)=1.0 to 5.0 (2).
Dependencies are inferred from the claim text.