Patent ID: 8696846
Filing Date: 2014-04-15
Classification: B29D,B60C

Abstract:
1. A method of manufacturing a pneumatic tire having a first sheet member, an adjacent second sheet member, and a carcass, the method comprising: placing the first sheet member, made of a composition containing a resin component and having no splice, around the outer surface of a making drum such that the first sheet member has no splice after the first sheet member is applied to the drum; cutting the second sheet member to a predetermined length, the second sheet member being made of a rubber composition, the second sheet member having a front end portion and a back end portion, where each end portion has a cut line with a vertex, and where the cut lines on the front end portion form a convex vertex and the cut lines on the back end portion form a concave vertex; placing the front end portion with the convex vertex of the second sheet member on the making drum covered with the first sheet member; wrapping the second sheet member around the making drum in the circumferential direction; overlapping and splicing the two end portions of the second sheet member so that the convex vertex and the concave vertex overlap; pressing the first sheet member and the second sheet member together by rotating the making drum in the circumferential direction; discharging air from the splice from the overlapping vertices toward outer edges of the second sheet members, and applying the carcass after splicing; wherein an average angle of each of the cut lines with respect to the circumferential direction of the making drum is within the range from 20° to 80°, wherein the first sheet member constitutes a tire inner liner, and the second sheet member is a tie rubber placed between the tire inner liner and the carcass.