Abstract:
An easy-to-produce annular metal cord exhibiting excellent break strength and an endless metal belt are provided. The annular metal cord has an annular core portion (3) and an outer layer portion (4). The annular core portion (3) is formed by bonding the opposite ends of a first strand material (1) consisting of six stranded first metal wires (5). The outer layer portion (4) is formed by winding a second strand material (2) consisting of six stranded second metal wires (6) six turns spirally around the annular core portion (3). The second strand material (2) is wound at a predetermined winding angle with respect to the central axis of the annular core portion (3), wherein the start-of-winding portion and the end-of-winding portion are coupled. Since six second strand materials (2) are not wound but the second strand material (2) are wound six turns, only one second strand material is required and the second strand material is coupled at only one position. Consequently, break strength of the annular metal cord can be enhanced while production is facilitated.
Abstract:
A steel cord (10) comprises eight or more strands (12, 14) twisted together. Each of the strands has a substantially same cord twisting direction and a substantially same cord twisting pitch in the steel cord, and each of the strands consists of two to five individual filaments (16, 18) twisted together. Such a multi-strand steel cord can be manufactured without having to twist the individual strands separately and beforehand.
Abstract:
2층 다중 스트랜드 금속 케이블(10)를 제조하는 방법은 - 스트랜드(TI, TE)를 형성하도록, 스트랜드(TI, TE)의 내층을 구성하는 2개의 와이어 주위에 스트랜드(TI, TE)의 외층을 구성하는 N개의 와이어를 나선형으로 권선하는 단계와, - 케이블(10)의 내층(C1)을 구성하는 K>1개의 사전 형성된 내측 스트랜드(TI) 주위에 케이블(10)의 불포화 외층(C2)을 구성하는 L>1개의 사전 형성된 외측 스트랜드(TE)를 나선형으로 권선하는 단계와, - 권선된 케이블(TI, TE)을 오버트위스팅하는 단계와, - 케이블(10)의 잔류 토크가 0이 되도록, 오버트위스팅된 케이블(10)의 밸런싱을 수행하는 단계와, - 밸런싱 및 오버트위스팅된 케이블(10)의 언트위스팅을 수행하는 단계를 포함한다.
Abstract:
Provided are a steel cord for reinforcing rubber whose fatigue resistance is increased more than ever to enable achieving high durability that was not conventionally realized, and a pneumatic radial tire including the steel cord as a reinforcement member. In a steel cord for reinforcing rubber having a double-twist structure that includes a plurality of strands twisted together in the same direction with the same pitch and including a central structure and at least one outer layer, the central structure is composed of at least two strands being twisted around each other and each being composed of at least seven filaments being twisted together.; In a steel cord for reinforcing rubber including at least three core strands being twisted together and at least six sheath strands being twisted together around the core strands, the core strands and the sheath strands are twisted in the same direction.
Abstract:
The present invention relates to a hybrid cord comprising an inner layer (1) in steel cord, an intermediate layer (2) in a high module and high toughness fibre and an outer layer (3) in a Polyolefin fibre. The present invention also refers to its application in an 8 (4x2) cords braided hybrid cable or any other type of hybrid cable presenting another construction, in braided or twisted cables.