Cord with high non-structural elongation
AssigneeNV Bekaert SA
InventorsUrbain D'Haene, Marc Eggermont, Dirk Meersschaut
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Abstract
A steel cord adapted for the reinforcement of an elastomer comprises steel filaments of a pearlitic structure. The steel cord has a plastic and elastic elongation at break of x % and a plastic and elastic elongation capability in the vulcanized elastomer of y %, the values x and y fulfilling following equation: y-0.50.ltoreq.x.ltoreq.y+0.50, which means that the total elongation at break does not fall down considerably after embedding the steel cord into an elastomer.
Claims10
A steel cord adapted for the reinforcement of a vulcanized elastomer, the steel cord comprising steel filaments of a pearlitic structure and having a coating of brass, the steel cord having been subjected to a stress-relieving treatment at such a temperature that
- (a) the steel cord has a total elongation at break exceeding 5%;
- and that
- (b) the steel cord has a plastic and elastic elongation at break of x% and an elastic and plastic elongation capability in the vulcanized elastomer of y%, the values of x and y fulfilling:
- y-0.50.ltoreq.x.ltoreq.y+0.50.
Dependencies are inferred from the claim text.