| 摘要 |
<p>An extrusion/moulding machine (10) to form product from thermoplastic materials. The machine (10) includes a feed hopper (11) which receives a supply of polystyrene granules. Extending from the hopper (11) is the barrel (12) surrounding a screw conveyor (13). The granules from the hopper (11) are delivered to the barrel (12) and are conveyed by the conveyor (13) to a mould assembly (16). Delivered to the barrel (12) at a position downstream of the hopper (11), is a blowing agent. The mould assembly (16) includes a plurality of mould cavities (19) which are arranged for rotation or reciprocal movement so that each cavity (19) is sequentially brought into communication with the barrel (12) to receive the thermoplastic material therefrom.</p> |
