PNEUMATIC TIRE

摘要

PURPOSE: To reduce the weight of a pneumatic tire and improve resistance against air permeation and adhesive property by providing an adhesive property provision layer made of thermoplastic resin between an air permeation prevention layer having specific air permeation coefficient and Young's modulus and a layer which opposes to the layer and making a difference in critical surface tension between the layer opposing to the air permeation prevention layer and the adhesive property provision layer a specific value. CONSTITUTION: An air permeation prevention layer as an inner liner layer 3 made of a polymer component which contains (A) thermoplastic resin whose air permeation coefficient is 25×10<-12> cc.cm/cm<2> .sec.cmHg or less and whose Young's modulus exceeds 500MPa and (B) elastomer component whose air permeation coefficient exceeds the value shown in (A) and whose Young's modulus is 500MPa or less of 10weight% or more per total polymer component weight, respectively and contains the sum of (A) and (B) of 30weight% or more per total polymer component weight is formed. Its air permeation coefficient is below the value shown in (A) and Young's modulus is 1 to 500MPa. An adhesive property provision layer made of thermoplastic resin is provided between the air permeation prevention layer and a carcass layer 2. A difference in critical surface tension between the carcass layer 2 and the adhesive property provision layer is set to 3mN/m or less.