Reinforced wirerope for rubber products and method and apparatus for making said wirerope

Application Number: 00109031
Application Date: 2000.06.02
Publication Number: 1276451
Publication Date: 2000.12.13
Priority Information: 1999/6/3 KR 20491/1999; 1999/6/7 KR 21025/1999
International: B29C70/16;D07B1/10;D07B3/10
Applicant(s) Name: Hongtok Wirerope Co., Ltd.
Inventor(s) Name: Lee Poom-Ho;Lim Seung-Ho
Patent Agency Code: 11219
Patent Agent: gu gongxia
Abstract The present invention relates to a reinforcing steel cord, which is formed by twisting a plurality of brass coated external element wires around a flat and spirally twisted core, with the twisted direction of the core being the same as or opposite to that of the resulting steel cord. In the steel cord, the pitch of the twisted core is set to allow the core to be twisted 0.2 to 2 times within the pitch of the cord, thus preferably forming sufficient interspaces. Since the rubber material is completely filled in the steel cord due to such interspaces, the steel cord is remarkably improved in buckling fatigue resistance, rubber penetration, air permeability, rubber adhesive force, ageing adhesive force relative to rubber, protection of brass coated surfaces of wires, and workability during a process of producing rubber products. The invention also relates to the method and device for produce the steel cord.