| 摘要 |
<p>A molding process and apparatus including a powder box containing plastic particles which is brought into engagement with a mold shell (13) heated to a desired temperature. The powder box (21) and mold shell (13) together define a closed chamber (14). The powder box (21) includes therein an agitating arrangement (27) which creates a dense dispersion of particles within the chamber (14) and displaces the particles upwardly toward the heated face of the mold shell (13). The particles as they contact the heated face become sticky and adhere thereto due to the transfer of heat to the particles from the heated face by conduction. This heat transfer effects melting of the particles and results in formation of a layer of plastic over the face of the mold shell. The agitation of the particles continues for a time period sufficient to create an article having the desired thickness.</p> |
