| 摘要 |
<p>Pallet press-moulded from a plastics sheet consists of a platform and hollow supports which are joined together by pairs of parallel moulded stiffeners running parallel with the edges of the platform. Pref. the raw material may be a vary dilute fibrous suspension in a liquid medium together with powdered thermosetting resin, the liquid being expressed through a permeable mould and the fibrous mass compacted by the moulding.</p> |
