Fire-retardant polymer foam composites
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United States of America Patent
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Aug 11, 1992
Grant Date -
N/A
app pub date -
Dec 11, 1990
filing date -
Dec 11, 1990
priority date (Note) -
Expired
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Abstract
A fire retardant polymer foam composite suitable for the making of packaging material, including a thin film of fire-retardant plastic extruded between layers of polymer foam sheets and bonded together to form a composite sheet of material having a sandwich structure.
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