Insulating wall for refrigerator devices
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United States of America Patent
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Apr 23, 1991
Grant Date -
N/A
app pub date -
Aug 23, 1990
filing date -
Aug 23, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An insulating wall for refrigerator devices, wherein a polyurethane is foamed between an exterior metal sheet and a deep-drawn plastics material plate selected from a member of the group of polystyrole or acrylonitrile-butadiene-styrene, wherein the cell-gas of the polyurethane foam is carbon dioxide and wherein the plastics material plate comprises in its interior a blocking layer of 0.03-0.6 mm thickness formed of a copolymer of polyethylene and vinyl alcohol where the molar percent of polyethylene in the copolymer is in the range of 32-44.
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