| abstract |
Provided is a pneumatic safety tire with improved durability by improving the compression fatigue property of a carcass ply cord. A pneumatic safety tire having a carcass skeleton and side reinforcing rubber. When the area of the side reinforcing rubber is S1, the area of the bead filler is S2, and the area of the rubber chafer is S3, 0.10 ≦ (S2 + S3) /S1≦2.50 0 ≦ S2 / (S2 + S3) ≦ 0.9 The carcass ply reinforcement cord is made of polyester fiber and / or aramid fiber, and an adhesive containing at least one of a thermoplastic polymer, a heat-reactive water-based urethane resin and an epoxide compound is used as one bath, and RFL type Adhesive treatment using two baths as the adhesive, and the main chain of the thermoplastic polymer is substantially free of addition-reactive carbon-carbon double bonds. It consists of a polymer and / or a urethane polymer, and has a functional group having crosslinkability as a pendant group. |