Method of and apparatus for making plastic articles

Claim 1

IN A METHOD OF MAKING A BLOWN PLASTIC CONTAINER BY INFLATING AN INJECTION MOLDED PARISON INTERIORLY OF A BLOW MOLD TO WHICH THE PARISON IS TRANSFERRED AFTER BEING INITIALLY FORMED; THE STEPS OF INJECTION MOLDING THE PARISON IN A MULTI-PART INJACTION MOLD HAVING A FIRST PART DEFINING THE EXTERIOR PORTIONS OF THE CONTAINER FINISH, A SECOND PART DEFINING THE SUBSEQUENTLY INFLATABLE PORTION OF THE PARISON, AND A THIRD PART FORMED AS A CORE SLEEVE, AT LEAST THAT PORTION OF SAID THIRD PART DEFINING THE INTERIOR PERIPHERAL SURFACE OF THE INFLATABLE PORTION OF SAID PARISON BEING TAPERED; PRIOR TO INFLATING THE PARISON, RELATIVELY MOVING THE PARTS OF THE INJECTION MOLD AND THE PARISON (1) TO TERIORLY OF THE FIRST AND SECOND MOLD PARTS AND (2) TO EXPOSE AT LEAST THE INFLATABLE PORTION OF THE PARISON EXAXIALLY RELATIVELY MOVE THE THIRD MOLD PART AND THE PARISON TO AN EXTENT SUCH THAT THE ENTIRE INTERIOR PERIPHERY OF BOTH THE CONTAINER FINISH AND THE INFLATABLE PORTION OF THE PARISON ARE OUT OF SURFACE CONTACT WITH SAID MOLD THIRD PART; AND FINALLY INJECTING AIR UNDER PRESSURE INTO SAID PARISON (1) TO SUBSTANTIALLY SIMULTANEOUSLY AND UNIFORMLY INFLATE THE PERIPHERAL PORTION OF THE INFLATABLE PART OF SAID PARISON, (2) TO CHILL THE INTERIOR SURFACES OF THE CONTAINER FINISH, AND (3) TO FORM A FINISH WHICH IS INITIALLY INJECTION MOLDED AND FINALLY BLOW MOLDED.