| 摘要 |
A process for making a toothbrush, in which a first mould (10) is provided which defines at least some of the shape of the toothbrush part, the mould incorporating a core (141, 142, 143, 144) which can be moved between extended and withdrawn positions, which in the extended position defines at least part of the shape of a conduit (18), providing the core in the extended position, injecting a first plastic material (16) into the mould cavity (12) in a fluid condition and allowing or causing the first plastic material to harden, moving the core into the withdrawn position, then in the second stage injecting the second plastic material (34) in a fluid state into the conduit and allowing or causing this second plastic material to harden. |
