Patent ID: 7513281
Filing Date: 2009-04-07
Classification: B29C,B29D,B60C,Y10T

Abstract:
1. A pneumatic tire comprising: a tread portion; a pair of sidewall portions; a pair of bead portions; a carcass extending between the bead portions through the tread portion and sidewall portions; and a sidewall rubber disposed axially outside the carcass in each of the sidewall portions, the sidewall rubber formed by winding a tape made of rubber with short fibers therein, wherein the short fibers in the tape are oriented towards the longitudinal direction of the tape, the sidewall rubber comprises a highly oriented part formed by winding the tape having a smaller thickness t a ratio (t the short fibers in the highly oriented part formed by winding the thinner tape are highly oriented in the tire circumferential direction in comparison with the short fibers in the less oriented part formed by winding the thicker tape, and the less oriented part is formed in a mid range of the tire section height, and the highly oriented part is formed on the radially outside and inside of the less oriented part.