The invention concerns a tread made from a rubbery material for a snow tyre including a tread surface designed to be in contact with a roadway during rolling of the tyre; the tread (1) is provided with a plurality of indentations (3) delimited by walls (5) situated opposite one another and forming side walls of raised elements (7) of the tread; each of the side walls intersects the tread surface to form an edge (9); at least one side wall (5) of a raised element is partially or completely formed by a covering layer (11) extending from the edge (9) associated with that side wall; the material of that layer (11) has a modulus of elasticity greater than the modulus of elasticity of the rubbery material making up the tread; the raised element (7) comprises a recess (12) in its side wall, that recess being delimited by the covering layer (11); the raised element (7) further has a width W, and the depth P of the recess is greater than or equal to 10% of the width W of the element (7) and less than or equal to 40% of that width W; lastly, the volume of the recess (12) is less than 10% of the volume of the raised element (7).


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    Title :

    Tread comprising sculpted elements comprising covering layer


    Contributors:

    Publication date :

    2015-08-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen



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