Method and apparatus for testing vacuum insulation panel quality

Details Method and apparatus for testing vacuum insulation panel quality Method and apparatus for testing vacuum insulation panel quality

1993-07-06

1994-09-13

Tokar, Michael J.

Measuring and testing

With fluid pressure

Leakage

73 52, G01M 334

Patent

active

053458141

ABSTRACT:
A method of verifying the integrity of the walls and seals of a sealed container is provided in which a low molecular weight gas is introduced into the interior of the container before the container is sealed. After sealing, the container either alone, or in batches with others, is placed into a chamber which is evacuated of gases to a pressure level below that interior of the container and is evacuated of the low molecular weight gas to a partial pressure below that which the gas has within the container. Subsequently the gas within the chamber is sensed to determine whether the rate of increase of the low molecular weight gas in the chamber exceeds a predetermined rate.

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