BOWLING PIN AND PROCESS FOR PRODUCING THE SAME

摘要

A bowling pin that upon intense impact from a bowl, would not rupture, excelling in durability, and that exhibits repulsive force; and a process for producing the same. The bowling pin has core material (3) made of a synthetic resin and, covering the external surface of the core material, skin part (15). The core material has superior hollow portion (5a) and inferior hollow portion (5b). The superior hollow portion is provided with superior cap (9) and the inferior hollow portion with inferior cap (13). Further, the pin is provided with reinforcing core (3a) and/or elastic band (4a). The bowling pin is produced by fixing a core material with a superior cap mounted thereon in a mold and injecting a molten resin around the core material to thereby form a skin part.When the reinforcing core is provided, a reinforcing core is set in a mold for core material forming and a molten resin is injected around the reinforcing core to thereby obtain a core material with insert. The obtained one is used as the core material. When the elastic band is provided, circumferential grooves are made around the core material, and the circumferential grooves are filled with a synthetic resin to thereby form the elastic band.