Conjugate fiber-containing yarn
First Claim
1. A conjugate fiber-containing yarn comprising a conjugate fiber in which a polyester component and a polyamide component are conjugated with each other in a side-by-side structure or an eccentric core-in-sheath structure, wherein(1) the polyester component comprises a modified polyester in which 5-sodiumsulfoisophthalic acid is copolymerized in an amount of from 2.0 to 4.5% by mole based on a total molecular amount of the acid component, and the intrinsic viscosity IV of the polyester component is from 0.30 to 0.43, and(2) the conjugate fiber is one produced from an undrawn conjugate fiber by a direct drawing procedure in which the undrawn conjugate fiber is directly drawn and heat set, without winding, by using a drawing machine having first and second rollers in which the conjugate fiber is preheated at a temperature of 50 to 100°
- C. by the first roller and heat-set at a temperature of 80 to 140°
C. by the second roller, whereby the conjugate fiber is capable of manifesting crimps when heat treated, and the crimp ratio of the crimp-manifested conjugate fiber is increased by moisture or water absorption of the conjugate fiber.
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Accused Products
Abstract
A conjugate fiber-containing yarn containing side-by-side or eccentric core-in-sheath conjugate fibers each composed of a polyester component and a polyamide component, that can be crimped by heating, and that has properties of increasing its crimp ratio when it absorbs moisture or water and is excellent in windbreaking and warmth-retaining properties, has a wool-like soft and bulky hand, and is capable of forming a fabric in which a see-through property is not increased even when wetted with water.
9 Citations
8 Claims
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1. A conjugate fiber-containing yarn comprising a conjugate fiber in which a polyester component and a polyamide component are conjugated with each other in a side-by-side structure or an eccentric core-in-sheath structure, wherein
(1) the polyester component comprises a modified polyester in which 5-sodiumsulfoisophthalic acid is copolymerized in an amount of from 2.0 to 4.5% by mole based on a total molecular amount of the acid component, and the intrinsic viscosity IV of the polyester component is from 0.30 to 0.43, and (2) the conjugate fiber is one produced from an undrawn conjugate fiber by a direct drawing procedure in which the undrawn conjugate fiber is directly drawn and heat set, without winding, by using a drawing machine having first and second rollers in which the conjugate fiber is preheated at a temperature of 50 to 100° - C. by the first roller and heat-set at a temperature of 80 to 140°
C. by the second roller, whereby the conjugate fiber is capable of manifesting crimps when heat treated, and the crimp ratio of the crimp-manifested conjugate fiber is increased by moisture or water absorption of the conjugate fiber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- C. by the first roller and heat-set at a temperature of 80 to 140°
Specification