Method for the manufacture of a vacuum insulating structure and an insulating structure so produced
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United States of America Patent
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-
Jul 3, 1990
Grant Date -
N/A
app pub date -
Jun 28, 1989
filing date -
Sep 30, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method is described for the manufacture of a vacuum insulating structure intended mainly, but not exclusively, for use in such domestic appliances as refrigerators or freezers as well as for vehicle walls including aeroplanes and in buildings. A hollow plastic or metal panel is purged to atmospheric air by means of a getterable gas. Vacuum is produced by removing the purge gas and the vacuum is subsequently maintained by contacting the residual gas with a getter material. A vacuum insulating structure thus manufactured is also described.
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