Distribution system for thermoplastic molding materials

Claim 1

IN A SYSTEM FOR THE PRODUCTION OF THERMOPLASTIC ARTICLES, IN COMBINATION: A CENTRAL POLYMERIZATION PLANT; A FIRST LOAD OF FLUCTUATING CAPACITY INCLUDING AT LEAST ONE INJECTION-MOLDING MACHINE; A SECOND LOAD INCLUDING AT LEAST ONE EXTRUDER ADAPTED TO ADJUST TO DIFFERENT RATES OF SUPPLY; THERMALLY INSULATED CONDUIT MEANS EXTENDING FROM SAID POLYMERIZATION PLANT TO SAID FIRST AND SECOND LOADS FOR DISTRIBUTING FLUID PLASTIC MATERIAL THERETO, SAID CONDUIT MEANS INCLUDING A FIRST BRANCH LEADING TO SAID FIRST LOAD AND A SECOND BRANCH LEADING TO SAID SECOND LOAD; FIRST FEED MEANS FOR SAID PLASTIC MATERIAL IN SAID FIRST BRANCH INCLUDING A SENSOR RESPONSIVE TO REACTION PRESSURE FROM SAID FIRST LOAD; VARIABLE-SPEED SECOND FEED MEANS IN SAID SECOND BRANCH FOR DIRECTING TO SAID SECOND LOAD A VARYING OVERFLOW OF PLASTIC MATERIAL FROM SAID POLYMERIZATION PLANT IN EXCESS OF A QUANTITY UNABLE BY SAID FIRST LOAD; AND CONTROL MEANS FOR SAID SECOND FEED MEANS COUPLED TO SAID SENSOR FOR ADJUSTING THE RATE OF FLOW OF SAID PLASTIC MATERIAL IN SAID SECOND BRANCH TO COMPENSATE FOR REACTION PRESSURE VARIATIONS IN SAID FIRST BRANCH.