公开(公告)号：US11585044B2

公开(公告)日：2023-02-21

申请号：US16663745

申请日：2019-10-25

Applicant: BRIDGESTONE CORPORATION

Inventor： Takahisa Shizuku ,  Nobuhiro Ando ,  Norihiko Kaga

IPC: D07B1/16 ,  B60C9/00 ,  D07B1/00 ,  D07B1/06

Abstract: A cord for reinforcing elastomers excellent in adhesion to elastomers such as rubber is provided. The cord is a cord for reinforcing elastomers (10) that includes metallic filaments (1) and a resin filament (2) twisted together, the resin filament (2) being made from a polymeric material having a melting point or softening point of 80 to 160° C. The cord for reinforcing elastomers includes a core and at least one sheath layer, wherein, after vulcanization, a distance w between metallic filaments (1b) forming an outermost sheath layer is 100 μm or less, and, on a cross section of the cord taken along a direction orthogonal to an axial direction, a filling ratio, which is a ratio of an area of a polymeric material (3) derived from the resin filament (2) to a gap region is 52 to 120%, where the gap region is defined as a portion occupied by a material other than the metallic filaments (1) within a region formed by connecting the centers of the individual metallic filaments (1b) constituting the outermost sheath layer.

公开(公告)号：US12054885B2

公开(公告)日：2024-08-06

申请号：US17283593

申请日：2019-10-29

Applicant: BRIDGESTONE CORPORATION

Inventor： Nobuhiro Ando

IPC: D07B1/16 ,  B60C9/00 ,  D02G3/48 ,  D07B1/06 ,  B60C9/20

CPC classification number: D07B1/167 ,  B60C9/0007 ,  B60C9/005 ,  D02G3/48 ,  D07B1/0613 ,  D07B1/0626 ,  B60C2009/0092 ,  B60C2009/2061 ,  B60C2009/2096 ,  D07B2201/2023 ,  D07B2201/2036 ,  D07B2201/2041 ,  D07B2201/2066 ,  D07B2201/2082 ,  D07B2205/2017 ,  D07B2205/3025 ,  D07B2401/2025 ,  D07B2401/204 ,  D07B2501/2046

Abstract: Provided is an elastomer reinforcement cord with improved rust resistance. An elastomer reinforcement cord 10 includes metal filaments and a polymer material. The elastomer reinforcement cord 10 has a multi-strand structure which includes: at least one core strand 21 formed by twisting plural metal filaments 1a and 1b together; and two or more sheath strands 22 each formed by twisting plural metal filaments 11a and 11b together, the sheath strands being twisted together around the core strand. An intra-sheath-strand filling rate a, which is a ratio of the area of the polymer material with respect to an intra-sheath-strand gap region A, is 52% or higher, and an inter-strand filling rate b, which is a ratio of the area of the polymer material with respect to an inter-strand gap region B, is 75% or higher.

公开(公告)号：US11685191B2

公开(公告)日：2023-06-27

申请号：US17274218

申请日：2019-09-09

Applicant: BRIDGESTONE CORPORATION

Inventor： Nobuhiro Ando

IPC: B60C9/00 ,  D07B1/06

CPC classification number: B60C9/0007 ,  D07B1/0613 ,  D07B1/0666 ,  B60C2009/0014 ,  B60C2009/0085 ,  D07B2201/2011 ,  D07B2201/2065 ,  D07B2201/2066 ,  D07B2401/2095 ,  D07B2501/2046 ,  D10B2401/063 ,  D10B2505/022

Abstract: Provided is a steel cord for rubber article reinforcement which has excellent corrosion resistance and productivity without deterioration of adhesion with rubber. A steel cord (1) for rubber article reinforcement, in which plural steel filaments (2) are twisted together, includes: a core having at least one core filament (2c); and a sheath having at least one sheath layer formed by twisting at least one sheath filament (2s) around the core. In this steel cord (1), brass plating is performed on the steel filaments (2) and zinc plating is further performed on the outer circumference of the brass plating of the core filament (2c), and the steel filaments (2) have a diameter d of 0.1 mm to 0.6 mm.

公开(公告)号：US20200055340A1

公开(公告)日：2020-02-20

申请号：US16663745

申请日：2019-10-25

Applicant: BRIDGESTONE CORPORATION

Inventor： Takahisa Shizuku ,  Nobuhiro Ando ,  Norihiko Kaga

IPC: B60C9/00 ,  D07B1/00 ,  D07B1/16 ,  D07B1/06

Abstract: A cord for reinforcing elastomers excellent in adhesion to elastomers such as rubber is provided. The cord is a cord for reinforcing elastomers (10) that includes metallic filaments (1) and a resin filament (2) twisted together, the resin filament (2) being made from a polymeric material having a melting point or softening point of 80 to 160° C. The cord for reinforcing elastomers includes a core and at least one sheath layer, wherein, after vulcanization, a distance w between metallic filaments (1b) forming an outermost sheath layer is 100 μm or less, and, on a cross section of the cord taken along a direction orthogonal to an axial direction, a filling ratio, which is a ratio of an area of a polymeric material (3) derived from the resin filament (2) to a gap region is 52 to 120%, where the gap region is defined as a portion occupied by a material other than the metallic filaments (1) within a region formed by connecting the centers of the individual metallic filaments (1b) constituting the outermost sheath layer.