Patent ID: 6209603
Filing Date: 2001-04-03
Classification: B60C,Y10T

Abstract:
A pneumatic tire comprising a rubber member containing a short fiber A' formed by the fibrillation of a short fiber A whose cross section takes a sea-island structure essentially composed of at least two polymers, a carcass layer bridging a pair of bead portions, a plurality of belt layers lying in the tread portion on the outside of the carcass layer, and compound sheets lying in both tire widthwise end portions of the belt layers respectively, with the ratio b/a of the tire circumferential modulus b of the compound sheets to the tire radial modulus a thereof being adjusted to 1.2 or above by incorporating said short fiber A' formed by the fibrillation of said short fiber A into the rubber constituting the compound sheets in a proportion of 0.5 to 15 parts by weight per 100 parts by weight of the rubber and orienting the fibrillated short fiber A' in a tire circumferential direction.