Steam chest mold for making a rectangular-section foam block

Details Steam chest mold for making a rectangular-section foam block Steam chest mold for making a rectangular-section foam block

B - Operations, Transporting

29

C

18/673

B29C 35/04 (2006.01) B29C 33/10 (2006.01) B29C 33/44 (2006.01) B29C 35/02 (2006.01)

Patent

CA 1289317

16539 ABSTRACT OF THE DISCLOSURE The mold for making a rectangular foam block from a plurality of blowable and sinterable plastic pieces, especially foamed polystyrene pieces, with the help of steam comprises a rectangular inner mold with a plurality of inner mold walls movable from each other and an outer mold tightly closable surrounding the inner mold having at least one steam inlet and an air evacuation and vacuum pump connector pipe. This mold is especially easy to construct when the outer mold comprises a pipelike pressurizable container with a front mold wall comprising a pressure-tight door and with a block ejector mounted in a rear mold wall which can be pushed approximately perpendicularly to the rear mold wall into the inner mold.

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