Injection foam molding system

Claim 1

AN INJECTION MOLDING SYSTEM FOR MASS PRODUCTION OF FOAM CORE SANDWICHES COMPRISING: A MIXING AND INJECTION HEAD; A PLURALITY OF PRODUCTION LINES ARRANGED ABOUT SAID HEAD FOR COOPERATION THEREWITH; EACH OF SAID LINES HAVING A PLURALITY OF MOLD CARS, EACH HAVING AN INTERNAL MOLD RESTRAINED AGAINST EXPANSION FOR CONTAINING FORM SANDWICHES TO BE FORMED BY INJECTION MOLDING; EACH LINE HAVING ELONGATED CONVEYOR MEANS OPERABLY ENGAGED WITH SAID SUPPORTING A PLURALITY OF SAID CARS FOR MOVEMENT OF SAID CARS THEREALONG, ENABLYING SAID CARS TO BE IN DIFFERENT ZONES THEREOF DURING VARIOUS STAGES OF INJECTION, REACTION, CURING AND UNLOADING OF THE FOAM CORE SANDWICH; SAID CARS EACH HAVING SUPPORT MEANS RETAINING A PAIR OF SHEET PANELS IN SPACED RELATIONSHIP, AND COMPRESSION RETENTION MEANS HOLDING SAID PANELS AGAINST EXPANSION UPON THE INJECTION OF PRESSURE FOAMING MATERIAL BETWEEN SAID PANELS; SAID COMPRESSION RETENTION MEANS BEING RELEASABLE AFTER CURING OF THE FOAM CORE IN SAID SANDWICHES FOR REMOVAL OF SAID SANDWICH; A SHIFTABLE HIGH PRESSUER PRESS AT THE INJECTION AND REACTION ZONE OF SAID CONVEYOR MEANS, INCLUDING A BED BENEATHE SAID CAR AND AN OVERHEAD PRESSURE ELEMENT, AND MEANS HOLDING SAID BEAD AND PRESSURE ELEMENT IN FIXED SPACED RELATIONSHIP WITH EACH OTHER AND IN CONTACT WITH THE CAR DURING INJECTION INITIAL REACTION OF THE FOAMING POLYMER TO PREVENT EXPANSION OF SAID SANDWICH WITH GENERATED PRESSURES GREATER THAN THE RETENTION FORCE OF SAID CPMPRESSION RETENTION MEANS; EACH OF SAID HIGH PRESSURE PRESSES BEING ADJACENT SAID MIXING AND INJECTION HEAD; SAID HEAD HAVING AN OUTLET CONDUIT EXTENDING THEREFROM AND COMMUNICABLE WITH THE MOLDS IN THE CARS IN SAID PRESSES IN SEQUENTIAL FASHION, WHEREBY SAID MOLDS ARE FILLED, REMOVED FROM SAID PRESSES, CURED UNLOADED, AND REASSEMBLED IN SEQUENTIAL FASHION BETWEEN PRODUCTION LINES.