B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
403/72
B29C 44/34 (2006.01) C08J 9/22 (2006.01)
Patent
CA 1262398
CLOSED CIRCUIT PROCESS FOR THE PRODUCTION OF EXPANDED POLYSYTRENE FOAM ABSTRACT OF THE DISCLOSURE A closed circuit process for the production of expanded polystyrene foam is described, comprising the steps of: (a) pre-expanding raw polystyrene beads containing a blowing agent in a pre-expansion vessel; (b) storing the beads in one or more closed storage containers to allow the expanded beads to return to substantially atmospheric pressure; (c) molding the expanded beads to a desired configu- ration in a closed mold with steam; and (d) removing the thus-formed article from the mold and placing such in an aging room, wherein at each stage the blowing agent released from the beads is recovered, separated from any residual steam by means of a con- densing system, and introduced into the burner of a steam generator, thereby serving as fuel for the pro- cess.
539090
Burchard Edgar
Echeverria Arturo
Plettner Otto F.
Sancho Ignacio G.
Burchard Edgar
Echeverria Arturo
Epsilon Holdings N.v.
Gowling Lafleur Henderson Llp
Plettner Otto F.
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