Molding element comprising cutting means for molding and vulcanizing a tire tread

Abstract

A molding element of a mold for molding and vulcanizing a tire tread, this tread comprising a tread surface intended to come into contact with the ground when the tire is running. The molding element comprises a molding surface intended to mold part of the tire tread surface and a blade of length L and of height H intended to mold a sipe or a groove in the tread. This blade comprises a rounded end extending along the length of the blade in a direction of extension X. The molding element further comprises two cutting means positioned on either side of the blade at a certain distance from this blade. Each cutting means comprises a cutting edge extending in the direction of extension, this cutting edge making an acute angle in a cutting plane perpendicular to this direction of extension, the height of this cutting edge being greater than or equal to the height of the blade.

Dependencies are inferred from the claim text.