| 摘要 |
<p>PURPOSE:To provide a method for regenerating an unusable bowling pin to a fresh bowling pin by utilizing the wooden core of the unusable bowling pin. CONSTITUTION:A slit 13 in an axial direction and slits 17, 18 in a radial direction are formed on a synthetic resin layer 3 of the unusable bowling pin 1 and, thereafter, this synthetic resin layer 3 is cut away. The exposed wooden core 2 is set in metal molds and molding is executed. The fresh bowling pin formed by reusing the core 2 is obtd. if the core 2 is enclosed with the fresh synthetic resin.</p> |
