Invention Grant
US07311128B2 Tread having tread pattern elements formed of at least two rubber mixes 有权
轮胎具有由至少两个橡胶混合物形成的胎面花纹元件

Tread having tread pattern elements formed of at least two rubber mixes
Abstract:
A tire tread includes a plurality of elements in relief (rib and/or block) having lateral faces, and a contact face intended to come into contact with the roadway during travel. The intersection of each lateral face with the contact face forms a ridge. The tread also includes a plurality of cutouts each defined by opposing main faces. Each tread pattern element is formed with at least one base mix. As viewed in section in a plane containing the thickness of this tread, at least one face defining at least one cutout is formed at least in part with a covering mix. The base mix exhibits a gripping action on wet ground which is lower than a gripping action of the covering mix on the same ground.
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