Patent ID: 8302648
Filing Date: 2012-11-06
Classification: B60C,C08L,Y10T

Abstract:
1. A pneumatic tire comprising: (A) an air permeation preventive layer containing a film of a thermoplastic resin composition containing a polyvinyl alcohol or ethylene vinyl alcohol copolymer having an air permeation coefficient of 2×10 (B) a protective film of a rubber composition consisting essentially of, as a main component, an ethylene propylene rubber (EPM) or ethylene propylene diene rubber (EPDM) and, as a smaller component, at least one member selected from the group consisting of a diene-based rubber, an olefin-based rubber and a thermoplastic rubber, adjacent to the air permeation preventive layer, directly or via an adhesive, as one layer located at least at the innermost surface of the air permeation preventive layer (A), which is arranged at the innermost surface of the tire ,whereby said tire includes a further reduction in the air leakage rate of the pneumatic tire with a good durability and a reduction in the weight of the tire.