Weather resistant panels
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United States of America Patent
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-
Jun 11, 2002
Issued Date -
N/A
app pub date -
Jul 7, 2000
filing date -
Jan 8, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The use is described of rigid foam cores in panels, especially doors, of the kind comprising a foam core (22) between two molded skins (8,10). The weather-resistance, especially the resistance to thermally-induced bowing, of such panels is improved by forming the panel of at least one vacuum-formed thermoplastics skin (8,10) adhesively bonded to a substantially open-cell, rigid foam core (22). If the foam has frangible cell walls, it can be conformed to accommodate the depressed zones of a molded overlying door skin (8,10) by crumbling under compression, with fracture of the cell walls to accommodate the zones. A preferred open-cell rigid foam is a phenolic foam reinforced with finely divided particulate filler.
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