Steel cord for reinforcing rubber article
AssigneeBridgestone Corporation
InventorNobuhiro Ando
Life of this patent
Estimating the term…
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.
Claims15
A steel cord for rubber article reinforcement formed by twisting plural steel filaments, the steel cord comprising:
- a core having at least one core filament;
- and a sheath having at least one sheath layer formed by twisting at least one sheath filament around the core,
- wherein
- brass plating is performed on the steel filaments, and zinc plating is further performed on the outer circumference of the brass plating of the at least one core filament,
- the steel filaments have a diameter d of 0.1 mm to 0.6 mm, and
- zinc plating is performed only on the outer circumference of the brass plating of the core filaments or on the outer circumference of the brass plating of the steel filaments other than the outermost-layer sheath filaments.
A steel cord for rubber article reinforcement formed by twisting plural strands,
- wherein
- the strands each comprise:
- a core having at least one core filament;
- and a sheath having at least one sheath layer formed by twisting at least one sheath filament around the core,
- brass plating is performed on the steel filaments, and zinc plating is further performed on the outer circumference of the brass plating of the at least one core filament, and
- the steel filaments have a diameter d of 0.1 mm to 0.6 mm.
Dependencies are inferred from the claim text.