PATCH RUBBER FOR REPAIRING RADIAL TIRE, METHOD FOR REPAIRING RADIAL TIRE BY USING THE PATCH RUBBER, AND RADIAL TIRE REPAIRED BY THE PATCH RUBBER

摘要

An object of the present invention is to provide: a patch rubber for repairing a radial tire, which patch rubber is capable of preventing troubles from occurring at an early stage in a repaired radial tire to enhance durability of the repaired radial tire; a method for repairing a radial tire by using the patch rubber; and a radial tire repaired by the patch rubber. Specifically, a patch rubber for repairing a radial tire, the patch rubber being constituted of reinforcing cord layers each formed by coating plural reinforcing cords aligned in parallel to each other with rubber, is characterized in that: the reinforcing cord layers constitute a laminate in which they are laminated from one side to the other side; and provided that: i) a region defined by a contour curve connecting adjacent cord ends of the plural reinforcing cords at one end side thereof, another contour curve connecting adjacent cord ends of the plural reinforcing cords at the other end side thereof, and the outermost reinforcing cords in a cord-juxtaposing direction of the plural reinforcing cords represents a reinforcing region in each reinforcing cord layer; ii) one reinforcing cord layer has one reinforcing region; and iii) another reinforcing cord layer, which includes the reinforcing cords having the same cord-extending direction as the reinforcing cords of the one reinforcing cord layer and is laminated on the other side in the layer-lamination direction of the one reinforcing cord layer, has another reinforcing region, the another reinforcing region resides within the one reinforcing region.