公开(公告)号：US20240360595A1

公开(公告)日：2024-10-31

申请号：US18292151

申请日：2022-07-27

Applicant: Toray Industries, Inc.

Inventor： Tomohiko Matsuura ,  Masato Masuda ,  Shinya Kawahara ,  Kojiro Inada

IPC: D01F8/14 ,  D06M15/507 ,  D06M101/32

CPC classification number: D01F8/14 ,  D06M15/507 ,  D06M2101/32 ,  D10B2331/04

Abstract: A conjugate fiber bundle formed of conjugate fibers, each of which includes at least two types of polymers having different melting points, in which a coefficient of variation CV of a value of (distance between polymer gravity centers/fiber diameter) between the conjugate fibers is 5% to 30%.

公开(公告)号：US20240060217A1

公开(公告)日：2024-02-22

申请号：US18269808

申请日：2022-01-07

Applicant: Toray Industries, Inc.

Inventor： Shinya Nakamichi ,  Kojiro Inada ,  Tomohiko Matsuura ,  Masato Masuda

IPC: D01F8/14 ,  D03D15/283 ,  D03D15/292

CPC classification number: D01F8/14 ,  D03D15/283 ,  D03D15/292 ,  D10B2331/04

Abstract: A composite fiber that satisfies properties of both stretchability and wear resistance, and that exhibits a delicate worsted-wool feeling closer to wool, a deep natural appearance, and a satisfactory feeling is described, and a woven/knitted fabric and a garment including the composite fiber, where the composite fiber includes a polyester-based thermoplastic resin A and a polyester-based thermoplastic resin B, and satisfies requirements (1) to (4):



(1) a difference (MA−MB) between a weight average molecular weight MA of the polyester-based thermoplastic resin A and a weight average molecular weight MB of the polyester-based thermoplastic resin B is 2,000 to 15,000;
(2) in the composite fiber, an apparent thick/thin ratio (Dthick/Dthin) of the composite fiber is 1.05 to 3.00;
(3) in a cross-section of the composite fiber, the polyester-based thermoplastic resin B covers the thermoplastic resin A, and a ratio (tmin/D) of a minimum value tmin of a thickness t of the thermoplastic resin B to a fiber diameter D of the composite fiber is 0.01 to 0.10; and
(4) in the cross-section of the composite fiber, a circumferential length Ct of a portion where the thickness t satisfies 1.00 tmin≤t≤1.05 tmin is Ct≥0.33 C with respect to an entire circumferential length C of the composite fiber.

公开(公告)号：US20230287604A1

公开(公告)日：2023-09-14

申请号：US18013981

申请日：2021-05-26

Applicant: Toray Industries, Inc.

Inventor： Shinya Nakamichi ,  Kojiro Inada

IPC: D01F8/12 ,  D01D5/34 ,  D02G1/02 ,  D03D15/283 ,  D03D15/44 ,  D03D15/56

CPC classification number: D01F8/12 ,  D01D5/34 ,  D02G1/02 ,  D03D15/283 ,  D03D15/44 ,  D03D15/56 ,  D03D15/49

Abstract: Objects of the present invention are to provide a woven/knitted fabric that does not inhibit movement of the body and that has excellent wearing feel, and is particularly suitable for use in garments, as well as garments using the woven/knitted fabric. Provided is a woven/knitted fabric at least partially including a false-twist yarn composed of an eccentric sheath-core type polyamide composite fiber having an equilibrium moisture content of 6.3% or less, the woven/knitted fabric having a stress ratio at 15% elongation in the warp direction to the weft direction of from 0.25 to 2.0.

公开(公告)号：US20240018703A1

公开(公告)日：2024-01-18

申请号：US18035998

申请日：2021-11-05

Applicant: Toray Industries, Inc.

Inventor： Shinya Kawahara ,  Kojiro Inada ,  Tomohiko Matsuura ,  Masato Masuda

IPC: D03D15/37 ,  D03D15/283 ,  D03D15/50 ,  D03D15/292 ,  D04B1/16 ,  D04B21/16

CPC classification number: D03D15/37 ,  D03D15/283 ,  D03D15/50 ,  D03D15/292 ,  D04B1/16 ,  D04B21/16 ,  D10B2401/022 ,  D10B2331/04 ,  D10B2501/00

Abstract: To provide a woven/knitted fabric having excellent fabric/skin separation, a woven/knitted fabric is provided that includes C-shaped cross-section fibers, wherein an average standard deviation Sq of surface roughness of at least one surface of the woven/knitted fabric is 5 μm or more and 100 μm or less, and a ratio (Sqs/Sq) of an average standard deviation Sqs of surface roughness of the one surface when the woven/knitted fabric is elongated by 10% to the average standard deviation Sq, is 0.85 or more and 2.00 or less.

公开(公告)号：US20230323569A1

公开(公告)日：2023-10-12

申请号：US18042205

申请日：2021-08-16

Applicant: Toray Industries, Inc.

Inventor： Tomohiko Matsuura ,  Masato Masuda ,  Shinya Kawahara ,  Kojiro Inada

IPC: D01F8/14 ,  D01F1/08

CPC classification number: D01F8/14 ,  D01F1/08 ,  D10B2331/04

Abstract: A composite fiber includes: two or more kinds of polymers that have different dissolution rates in a solvent and are laminated in a direction from a fiber center to a fiber surface in a fiber cross section, in which an innermost layer including the fiber center includes an easily soluble polymer, and two kinds of hardly soluble polymers having different melting points are unevenly distributed in at least one layer other than the innermost layer.