pneumÁtico, e, processo para fabricaÇço do mesmo.

摘要

A tire with an elastomeric intermediate layer of compound material disposed between the tread band and the belted plies where the elastomeric intermediate layer is made of a fiber-reinforced material. In one embodiment, the elastomeric intermediate layer is further characterized in that it has edge portions that are about 33 % thicker than the central portion. In this embodiment, the edge portions are about 2 mm thick and the central portion is about 1.5 mm thick. The edge portions each comprise about 2/7ths of the width of the elastomeric intermediate layer while the central portion comprises the remaining 3/7ths of the width of the layer. The elastomeric intermediate layer may be reinforced with short reinforcing fibers to improve its modulus of elasticity, among other mechanical characteristics. The short reinforcing fibers have a diameter of about 10 microns, a length of about 200 microns, and an aspect ratio of about 20. The short reinforcing fibers are incorporated in the compound material with a concentration between about 5 and 15 parts per hundred of rubber (phr).