| 摘要 |
<p>A hollow tube to be used in recreational products includes a composite laminate (40) which has outer and inner layers (10), (30) of fiber reinforced thermosetting composite material and a middle layer (20) of thermoplastic material between the outer and inner layers (10), (30). The middle layer (20) has a damping factor which is higher than that of the fiber reinforced thermosetting composite material. The middle layer (20) is formed with through-holes (21) through which the outer and inner layers (10), (30) seep so as to form a bond between the outer and inner layers (10), (30).</p> |
