Pneumatic tire

摘要

A pneumatic tire having at least one air permeation preventive layer comprised of a cylindrical film or sheet extruded, molded or heat-fused into a cylindrical shape and free from any connecting portion, composed of a polymer composition containing a thermoplastic resin or a blend of a thermoplastic resin and an elastomer component and having an air permeation coefficient of not more than 25 x 10 <-12>cc.cm/cm<2>.sec.cmHg and a Young's modulus of 1 to 500MPa, wherein a plurality of air permeation preventive layers cover the inner surface of the tire by at least two continuous turns substantially in the tire circumferential direction.