Method of forming a double-walled container
First Claim
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1. A METHOD OF FORMING A DOUBLE-WALLED, OPEN-END, BLOWN CONTAINER COMPRISING THE STEPS OF:
- FORMING AN OUTER CONTAINER WALL BY MOLDING;
INSERTING A PARISON OF AN EXPANDABLE THERMOPLASTIC MATERIAL INTO SAID OUTER CONTAINER THROUGH THE OPEN END THEREOF;
EXPANDING SAID PARISON BY APPLYING FLUID UNDER PRESSURE TO THE INTERIOR THEREOF;
CONCURRENTLY FURTHER EXPANDING THE OPEN END PORTION OF SAID EXPANDING PARISON INTO SEALING ENGAGEMENT WITH THE OPEN
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1 Claim
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1. A METHOD OF FORMING A DOUBLE-WALLED, OPEN-END, BLOWN CONTAINER COMPRISING THE STEPS OF:
- FORMING AN OUTER CONTAINER WALL BY MOLDING;
INSERTING A PARISON OF AN EXPANDABLE THERMOPLASTIC MATERIAL INTO SAID OUTER CONTAINER THROUGH THE OPEN END THEREOF;
EXPANDING SAID PARISON BY APPLYING FLUID UNDER PRESSURE TO THE INTERIOR THEREOF;
CONCURRENTLY FURTHER EXPANDING THE OPEN END PORTION OF SAID EXPANDING PARISON INTO SEALING ENGAGEMENT WITH THE OPEN
- FORMING AN OUTER CONTAINER WALL BY MOLDING;
Specification