TREAD INCLUDING AT LEAST ONE WAVY GROOVE, AND METHOD FOR PRODUCING SAME

摘要

The invention relates to a tire for a heavy vehicle, including a tread (2) having a total thickness E and a total volume V, said tread having a rolling surface (200) that contacts a road surface, said tread having at least one continuous cavity or groove (5) extending in a main direction, said cavity or groove (5) being delimited by side walls (54) that are connected by a bottom (53), said cavity or groove having a transverse cross-section, the innermost points of the bottom (53) of each cavity defining a bottom line (530), said tread being such that each cavity or groove includes a plurality of open sections (51) on the rolling surface in the new state and a plurality of closed sections (52), the closed sections being connected to the open sections and alternatingly arranged, each closed section being spaced apart from the rolling surface by a rubber bridge, and such that the points of the bottom line (530) of said cavity or groove are located between a minimum distance Dm and a maximum distance DM with respect to the rolling surface, the bottom line (530) of each cavity or groove having a wavy shape, the positive amplitude of which is equal to the difference of (DM-Dm).