PNEUMATIC TIRE AND METHOD OF FORMING CIRCUMFERENTIAL BELT LAYER OF THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a method of forming a pneumatic tire that improves the belt durability and its circumferential belt layer.

SOLUTION: A method for forming the circumferential belt layer by helical winding of a strip that is the cord extending along the tire equator surface and coated with rubber includes: a process of winding the strip for a half length of an outer circumferential length of the crown part of the carcass in parallel to the tire equatorial plane from a widthwise inner side of the belt end region; winding the strip for the remaining half length while shifting the strip for the width of the strip from a widthwise inner to outer side; a process of winding the strip for the outer circumferential length of the crown part of the carcass in parallel to the tire equatorial plane; and a process of winding the strip for the half length of the outer circumferential length of the crown part of the carcass while shifting the strip for the width of the strip from the widthwise outer to inner side and winding the strip for the remaining half length in parallel to the tire equatorial plane.

COPYRIGHT: (C)2012,JPO&INPIT