Pneumatic tire with air permeation preventive layer

  • US 5,938,869 A
  • Filed: 02/11/1997
  • Issued: 08/17/1999
  • Est. Priority Date: 03/24/1995
  • Status: Expired due to Term
First Claim
Patent Images

1. 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×

  • 10-12 cc·

    cm/cm2 ·


    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.

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