B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/661
B29C 47/88 (2006.01) B29C 47/20 (2006.01)
Patent
CA 1183667
ABSTRACT OF THE DISCLOSURE The present invention concerns manufacture of cellular structures of thermoplastics material. In particular the invention concerns apparatus for use in the production of cellular structures of thermoplastics material comprising a supply and injection stage (b) for supplying the thermoplastics material (12), a die stage (e) throughwhich the thermoplastics material supplied by the supply and injection stage is extruded to form the cellular structure (15), and a cooling stage (d) supplied in use with cooling fluid (4) for cooling the extruded thermoplastics material, the different stages being located one above the other and the apparatus further comprising a plurality of regularly spaced cylinders (7), each cylinder (7) having a lower part (10) of lesser diameter provided with heating means (11) and an upper part (8) of greater diameter, the bodies of the cylinders extending through the supply and injection stage and the upper parts thereof forming said die stage. The invention is particularly applicable to the manufacture of cellular structures of large dimensions for buildings.
389059
Ducruy Guy R.
Lhommeau Robert E.
Indumat S.a.
Robic Robic & Associes/associates
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