摘要 |
<p>The bat is injection, extrusion or blow moulded in one piece of expanded hard plastic with the handle grip and finger gripping surfaces of the bat coated with a layer of thermoplastic soft foam. Pref. a polystyrene, polyurethane, polyethylene or polypropylene soft foam is used and the striking surface is covered with a layer of 'pimpled' soft foam.</p> |