| 摘要 |
PROBLEM TO BE SOLVED: To inexpensively provide a bat for ball game which allows weight reduction, allows the assurance of safety and is regulatable to a weight or carry optimum for hitting a supersoft ball without applying load to the environment. SOLUTION: A core rod 4 consisting of a laminated bamboo material is deposition over the entire length of the axial center of the bat for ball game having a ball hitting part 1, a shaft part 2 and a grip part 4. The outside surface so the ball hitting part 1 and the shaft part 2 are composed of external cylinders 5 and 6 consisting of rigid rubber or plastic. Intermediate materials 7 consisting of cushion materials are disposed between the inside surfaces of the external cylinders 5 and 6 and the outside surface of the core rod 4. The grip part 3 is composed of the core rod 4. |
