| 摘要 |
1398982 Moulding foamed plastics material PONT-A-MOUSSON SA 15 May 1972 [25 May 1971] 22661/72 Heading B5A A mould for producing blocks of expanded thermoplastic material from particles which are expanded and welded together by superheated steam includes a mould cavity into which the particles are poured and through an apertured wall of which the superheated steam passes; the wall is composed of superposed hollow elements, Fig. 2, each comprising an apertured inner wall 23 for the passage of the steam, an outer wall 24 and an intermediate distributing wall 25 with openings 26-28. Apertured spacers 30-32 are provided together with steam connections 39, 40 and a condensate outlet 37. |
