Pneumatic tire with air permeation preventive layer
AssigneeThe Yokohama Rubber Co., Ltd.
InventorsHiroyuki Kaido, Kazuto Yamakawa, Jiro Watanabe
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Abstract
A pneumatic tire has an air permeation preventive layer comprised of a film or sheet composed of a polymer composition containing a thermoplastic resin or a blend of a thermoplastic resin and an elastomer with an air permeation coefficient of not more than 25.times.10.sup.-12 cc.multidot.cm/cm.sup.2 .multidot.sec.multidot.cmHg and a Young's modulus of 1 to 500 MPa and wherein the film or sheet is arranged so that at least one turn of the film or sheet in the tire circumferential direction is free from a join.
Claims6
A pneumatic tire having an air permeation preventive layer comprised of a cylindrical film or sheet heat-fused into a cylindrical shape and free from any connecting portion, said cylindrical film or sheet being 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.times.10.sup.-12 cc.multidot.cm/cm.sup.2 .multidot.sec.multidot.cmHg and a Young's modulus of 1 to 500 MPa, wherein said film or sheet is arranged in such a manner that at least one turn of the film or sheet in the circumferential direction of the tire.
Dependencies are inferred from the claim text.