PNEUMATIC RADIAL TIRE

摘要

PURPOSE:To improve uniformity and permanence properties in high speed of tire by constructing fiber cord in reinforcing layer of belt cover in radial tire with core-sheath type conjugated fiber of polyester-based polymer and polyamide-based polymer. CONSTITUTION:In a reinforcing layer of belt cover in which a fiber cord is buried almost parallel to the circumferential direction of tire, a core-sheath type conjugate fiber consisted of a core component of polyester-based polymer and a sheath of polyamide-based polymer is used to a filament constructing the fiber cord.