公开(公告)号：US12297594B2

公开(公告)日：2025-05-13

申请号：US18212929

申请日：2023-06-22

Applicant: KURARAY CO., LTD.

Inventor： Kazumasa Kusudo ,  Satoshi Katsuya ,  Yoshifumi Aso ,  Shuhei Yorimitsu

IPC: D07B1/02 ,  D04C1/12

Abstract: Provided is a double rope structure which is provided with an inner core and an outer cover. In the double rope structure, the inner core includes high strength and high modulus fibers with a yarn tenacity of 20 cN/dtex or higher and a yarn elastic modulus of 400 cN/dtex or higher, and has a ratio of yarn length/rope length of 1.005 or more and 1.200 or less, the rope length being determined as a length of a cut section (V) cut to a certain length from the rope structure, and the yarn length being determined as an average value of lengths of yarns constituting the inner core of the cut section (V).

公开(公告)号：US11884788B2

公开(公告)日：2024-01-30

申请号：US17433717

申请日：2020-02-21

Applicant: KURARAY CO., LTD.

Inventor： Toru Asada ,  Daisuke Koda ,  Shuhei Yorimitsu ,  Shinichi Takemoto ,  Hiroyuki Kawai

IPC: C08J5/24 ,  D06M15/693

CPC classification number: C08J5/246 ,  C08J5/249 ,  D06M15/693 ,  C08J2309/00

Abstract: Provided are reinforcing fibers using an adhesive component not containing resorcinol and formaldehyde, which are excellent in adhesiveness to rubber and which can be efficiently produced while preventing contamination of production facilities, and a method for producing them, as well as a molded article using them. The reinforcing fibers have an adhesive component that contains a conjugated diene rubber and an oil, in at least a part of the surfaces thereof, wherein the vapor pressure at 20° C. of the oil is 10 Pa or less.

公开(公告)号：US20230332350A1

公开(公告)日：2023-10-19

申请号：US18212929

申请日：2023-06-22

Applicant: KURARAY CO., LTD.

Inventor： Kazumasa KUSUDO ,  Satoshi Katsuya ,  Yoshifumi Aso ,  Shuhei Yorimitsu

IPC: D07B1/02 ,  D04C1/12

CPC classification number: D07B1/025 ,  D04C1/12 ,  D07B2201/2068 ,  D07B2201/102 ,  D07B2201/1096 ,  D07B2205/2042 ,  D07B2205/201 ,  D07B2205/205 ,  D07B2201/2041 ,  D07B2401/2055

Abstract: Provided is a double braid rope structure which is provided with an inner core and an outer cover. In the double braid rope structure (10), the inner core (3) includes high strength and high modulus fibers with a yarn tenacity of 20 cN/dtex or higher and a yarn elastic modulus of 400 cN/dtex or higher, and has a ratio of yarn length/rope length of 1.005 or more and 1.200 or less, the rope length being determined as a length of a cut section (V) cut to a certain length from the rope structure (10), and the yarn length being determined as an average value of lengths of yarns constituting the inner core of the cut section (V).

公开(公告)号：US20220055408A1

公开(公告)日：2022-02-24

申请号：US17520858

申请日：2021-11-08

Applicant: KURARAY CO., LTD.

Inventor： Shinichi Takemoto ,  Shuhei Yorimitsu ,  Ushio Suzuki ,  Takuji Nakamura

IPC: B60C9/00 ,  B60C19/12

Abstract: A bicycle-tire reinforcing ply comprising a woven fabric that comprises liquid crystalline polyester fiber yarns, wherein each of the fiber yarns comprises three or more single fibers having an average fiber diameter of 25 μm or larger, and the fiber yarns satisfies the following formula: [No. of single fibers per fiber yarn]×[average fiber diameter (μm)]≤1700.