LAMELLA FOR FORMING A SIPE AND A TYRE PROVIDED BY SUCH A SIPE, AND A METHOD FOR FORMING SAID LAMELLA

摘要

The present invention relates to a lamella (5) for forming a sipe in a pattern block of the tread band of a pneumatic tire, the lamella includes a first side wall and a second side wall parallelly arranged to each other, and a projection opposite a recess arranged on the other side wall is arranged in each side walls, having a surface geometry similar to a surface geometry of said recess, and said recesses are formed as channels (8) and said projections are formed as ribs (9), and the side walls are roughened surfaces having congruent surface geometries to each other provided by a pattern consisting of channels (8) and ribs (9). The invention further relates to a tyre having a sipe produced by said sipe forming lamella, as well as a method for forming said lamella.