Apparatus and process for continuously producing foamed sheets

Details Apparatus and process for continuously producing foamed sheets Apparatus and process for continuously producing foamed sheets

B - Operations, Transporting

29

C

18/657

B29C 44/56 (2006.01) B29C 35/02 (2006.01)

Patent

CA 1099873

ABSTRACT OF THE DISCLOSURE A plastic foamed sheet of excellent quality is produced by using an apparatus comprising (1) a preheating chamber including a conveyor means for continuously conveying a thermoplastic resin sheet containing a heat- decomposable blowing agent in the horizontally supported state and a heating means for heating the sheet to a temperature lower than the decomposition temperature of the blowing agent, and (2) a foaming chamber connected to the preheating chamber and including a heating means for heat-foaming the sheet as it is continuously conveyed while being perpendicularly suspended from the terminal of the conveyor means.

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