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US 4,356,926 AGranted
Method of bonding plastic to metal and container formed thereby
OwnerWilliam J. Priestly, Nelson E. McLoughlininventors
Life of this patent
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Abstract
A method of bonding metal to plastic by application of ultrasonic energy alone or by insert injection molding or by a simultaneous application of ultrasonic energy during insert injection molding. A container made by the process, particularly a beverage container.
Claims5
A method of forming a complete container having a metal base and a plastic top comprising the steps of:
- making a metal, open topped, closed bottom, cylindrical container preform;
- and forming a plastic top thereon by insert injection molding under a pressure of from 8,000 to 12,000 psi.
Dependencies are inferred from the claim text.