BANDE DE ROULEMENT POUR PNEUMATIQUE
    10.
    发明公开
    BANDE DE ROULEMENT POUR PNEUMATIQUE 有权
    胎面轮胎

    公开(公告)号:EP2648924A1

    公开(公告)日:2013-10-16

    申请号:EP11793744.1

    申请日:2011-12-05

    摘要: The invention relates to an asymmetrical tread for a snow tyre comprising a rubber composition, said tread (1) having a running surface intended to be in contact with the ground during the running of the tyre, said tread (1) having a series of base motifs (3, 5) arranged in the circumferential direction (X), each base motif extending over at least 80% of the width (W) of the tread (1), each base motif (3, 5) having a plurality of elements in relief (11a-11k) provided with incisions (13i) that open onto the running surface, each incision having a width of less than 1 mm and a depth of at least 3 mm. For each base motif (3, 5) of the tread, there is defined a level of orientation of the incisions (NO) corresponding to (I) where i is the number of incisions in the motif, li is the length of the i-th incision on the running surface, P is the pitch of the base motif, Wm is the width of the base motif, αi is the positive or negative angle formed on the running surface by the i-th incision with respect to the transverse direction, where αi ≤ 45 degrees, said level of orientation being greater than or equal to 1.5 degrees/mm. The rubber composition has at least one diene elastomer, an inorganic reinforcing filler and a plasticizing system comprising a liquid plasticizer at a level B of between 10 and 60 phr, said liquid plasticizer being a vegetable oil.