HALF-FINISHED PRODUCT OF A SIDEWALL AND A PNEUMATIC TIRE COMPRISING THE SAME, CAPABLE OF REDUCING UNUNIFORM RIGIDITY BETWEEN THE OVERLAPPED AND NON-OVERLAPPED JOINT AREAS OF A CARCASS PLY HALF-FINISHED PRODUCT

摘要

PURPOSE: A half-finished product of a sidewall and a pneumatic tire comprising the same are provided to improve the uniformity and external quality of a tire by reducing the size of a dent generated by the ununiform rigidity of a carcass ply.;CONSTITUTION: A half-finished product of a sidewall comprises a base strip rubber layer(310), a rim flange rubber layer(320), and a sidewall strip rubber layer. The base strip rubber layer comprises a body part(311) and a base extension part(312). The base extension part partially composes the bottom surface of the sidewall strip rubber layer from the lower end of the rim flange rubber layer side. The rim flange rubber layer is separately formed from the base strip rubber layer. The sidewall strip rubber layer is extended to fill and connect in between the base strip and rim flange rubber layers.;COPYRIGHT KIPO 2013