Hermetically sealed package tester

Details Hermetically sealed package tester Hermetically sealed package tester

1987-08-31

1989-02-14

Myracle, Jerry W.

Measuring and testing

With fluid pressure

Leakage

73 52, G01M 336

Patent

active

048038687

ABSTRACT:
A method and apparatus for testing flexible sealed packages of the type wherein the package is at least partially made of a flexible, electrically conductive foil or metallic laminate wherein the capacitance between the flexible conductive foil or metallic laminated of the package and a fixed electrode is measured when the package is subjected externally to a partial vacuum. The apparatus includes an evacuable chamber adapted to support a package under test therewithin so that at least part of the flexible foil or metallic laminate portion of the package lies opposite said fixed electrode and a means for monitoring the capacitance between the electrode and that part of the foil or metallic laminate when the chamber is evacuated.

REFERENCES:
patent: 3771351 (1973-11-01), Sacks et al.
patent: 3802251 (1974-04-01), Durr
patent: 3837215 (1974-09-01), Massage
patent: 3859844 (1975-01-01), Hruby
patent: 3959723 (1976-05-01), Wagner
patent: 3991622 (1976-11-01), Oowada
patent: 4326408 (1982-04-01), Kanoh
patent: 4656866 (1987-04-01), Aarts

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