Nv Bekaert Sa

Rik Mullebrouck

Stijn Vanneste

Zhichao Cheng

Hendrik Rommel

Luc Sabbe

Lisa Le Percq

Ghislain Doornaert

Jan Gallet

A steel cord for reinforcing a breaker or belt ply in a rubber tire having a core group and a sheath group. The core group consists of two to four core steel filaments with a first diameter dc and the sheath group consists of one to six sheath steel filaments with a second diameter ds. The ratio dc/ds of the first diameter dc to the second diameter ds ranges from 1.10 to 1.70. The two core steel filaments are untwisted or have a twisting step greater than 300 mm. The sheath group is twisted around the core group with a cord twisting step in a cord twisting direction. The ratio of the difference in residual torsions of the core group and the sheath group to the difference in saturation level between the core group and the sheath group ranges from 0.10 to 0.65, preferably from 0.10 to 0.60.

Steel cord with reduced residual torsions

A steel cord () adapted for the reinforcement of rubber products, the steel cord () comprises a core () and three or more outer strands () twisted around the core () in a cord twisting direction. The outer strands () comprise outer filaments () twisted in a strand twisting direction which is the same as the cord twisting direction. The outer strands () have a wavy form which makes spaces between the core () and the outer strands. The steel cord () has improvements on elongation at break and impact resistance capacity.

Off-the-road steel cord with crimped strands

A spool filled with two or more elongated elements such as steel cords wound in parallel and in several windings upon the spool. The distances between two neighboring elongated elements, as measured along a line parallel to the axis of the spool, is not more than 10 mm along 90% of the length of each elongated element.

Spool filled with multiple elongated elements wound closely together

Growing community of inventors

Wevelgem, Belgium

Rik Mullebrouck