variable thickness lamellae with multiple areas of reduced thickness

摘要

tire treads and a method of forming tire treads (10) having a coverslip (9) having a length extending between opposite end ends of the coverslip and having a height and thickness which are variable across length and length. coverslip height. the thickness of the coverslip (18) includes a coverslip portion disposed between opposite end ends defining the length of the coverslip and having a thick portion extending at least partially about a perimeter of a thin portion. the thin portion is substantially 0.2 millimeter or less in thickness and forms at least 40% of the surface area along opposite sides of the coverslip, opposite sides are arranged on opposite sides of the coverslip thickness.