The Alan I W Frank Corporation

Paul R Schaeffer

Apparatus for molding products from polymeric material comprising cooperating mold elements forming a mold cavity for receiving polymeric material to be molded and means for optionally introducing steam into thermoconductive relationship with the respective mold elements in parallel and in series. Also a method of molding products from polymeric material comprising introducing polymeric material into a mold cavity formed by cooperating mold elements, causing steam to flow in thermoconductive relationship with the respective mold elements in parallel during a portion of the molding cycle and causing steam to flow in thermoconductive relationship with the respective mold elements in series during another portion of the molding cycle.

Method for molding products from particulate polymeric material

Apparatus for molding products from polymeric material comprising cooperating mold elements forming a mold cavity for receiving polymeric material to be molded, means for introducing steam into thermoconductive relationship with the respective mold elements and separate valved conduits through which the steam in thermoconductive relationship with the respective mold elements is discharged. Also a method of molding products from polymeric material comprising introducing polymeric material into a mold cavity formed by cooperating mold elements, causing steam to flow in thermoconductive relationship with the respective mold elements and separately controlling the duration of such steam flow in thermoconductive relationship with the respective mold elements.

Growing community of inventors

Paoli, PA, United States of America

Paul R Schaeffer