Pneumatic tire and process for producing the same

Abstract

Provided are: a pneumatic tire capable of retaining a satisfactory uniformity even though the tire includes film layers superposed by winding a film layer in a circumferential direction of the tire multiple times; and a process for producing the same. The present invention is the pneumatic tire including the film layers of the thermoplastic resin or the thermoplastic elastomer composition made by blending the elastomer with the thermoplastic resin, which are superposed by winding the film layer in the circumferential direction of the tire multiple times, the tire wherein a rubber film is interposed between the film layers. The process for producing the pneumatic tire includes: preparing a laminated body in which the rubber layer is stuck to at least one surface of the film layer; interposing the rubber layer between the film layers by winding the laminated body in the circumferential direction of the tire multiple times; forming an uncured tire which includes the film layers and the rubber layers; and curing the tire.

1 . A pneumatic tire which includes film layers superposed by winding a film layer in a circumferential direction of the tire a plurality of times, the film layer being made of any one of a thermoplastic resin and a thermoplastic elastomer composition obtained by blending an elastomer with a thermoplastic resin, characterized in that a rubber layer is interposed between the film layers. 
     
     
         2 . The pneumatic tire according to  claim 1 , characterized in that the film layers constitute an air-permeation preventive layer placed closer to an inner-cavity of the tire than a carcass layer is. 
     
     
         3 . A process for producing a pneumatic tire characterized by comprising:
 preparing a laminated body in which a rubber layer is stuck to at least one surface of a film layer made of any one of a thermoplastic resin and a thermoplastic elastomer composition obtained by blending an elastomer with a thermoplastic resin;   interposing the rubber layer between the film layers by winding the laminated body in a circumferential direction of the tire a plurality times;   forming an uncured tire which includes the film layers and the rubber layers; and   curing the tire.   
     
     
         4 . The process for producing a pneumatic tire according to  claim 3 ,
 characterized in that the film layers constitute an air-permeation preventive layer placed closer to an inner-cavity of the tire than a carcass layer is.