RIGID CORE FOR TIRE MOLDING AND TIRE MANUFACTURING METHOD

摘要

There was a demand for: a rigid core for tire molding that is formed using lighter weight segments with sufficiently low coefficient of thermal expansion and sufficient hardness and strength instead of conventional segments that had a variety of problems; and a tire manufacturing method, which is capable of manufacturing tires with improved productivity without causing increased size of molding equipment or vulcanization equipment by using said rigid core for tire molding. A rigid core for tire molding having a core body on the outer surface of which a tire-molding surface is formed and a cylindrical core that is inserted in the central hole of the core body, the rigid core being characterized in that the core body is formed in a ring-shape by multiple core segments that are divided in the tire circumference direction and the core segments are manufactured using a carbon fiber-reinforced resin.

主权项

1. A rigid core for tire molding having a core body, on the outer surface of which a tire molding face is formed, and a cylindrical core to be inserted into the center hole of the core body, wherein
the core body is formed into a ring-shape by using a plurality of core segments divided in the circumferential direction of a tire, and the core segments are made by using carbon fiber-reinforced resin.