Open multi-strand cord

摘要

A steel cord (10) adapted for the reinforcement of rubber products, comprises a core strand (12) and six peripheral strands (14) concentrically surrounding the core strand (12). Each of the core and peripheral strands (12, 14) comprises a center of two or more center filaments (16) and two layers of filaments surrounding the center. The core strand (12) has a diameter D1 which is greater than the diameter D2 of the peripheral strands (14). All the filaments (18, 20) of each layer have substantially the same diameter and a radially outer layer has a twist angle which is greater than a twist angle of a radially inner layer of the same strand. Each of the strands (12, 14) in the cord is composed of no more than twenty-six filaments (16, 18, 20) being twisted together.

主权项

1. A steel cord adapted for the reinforcement of rubber products, said steel cord being a multi-strand structure that includes a core strand and multiple peripheral strands concentrically surrounding said core strand;
each of said core and peripheral strands comprising a centre of two or more centre filaments and two layers of filaments surrounding the centre; the core strand having a diameter D1 which is greater than the diameter D2 of the peripheral strands; a radially outer layer having a twist angle which is greater than a twist angle of a radially inner layer of the same strand; wherein said cord comprises six of said peripheral strands concentrically surrounding said core strand, and wherein in said cord each of the strands is composed of no more than twenty-six filaments being twisted together, and in each strand the diameter of the filaments in the centre are greater than or equal to the diameter of the filaments of the radially inner layer.