Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Patent
1995-02-13
1996-12-03
Raimund, Christopher
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
428286, 4283193, 4283197, 4283191, B32B 900
Patent
active
055806511
ABSTRACT:
An energy absorbing panel comprising a resilient polyurethane foam core having a density in the range of from about 1.5 to about 24 pounds per cubic foot and an indentation force deflection at 25%, when measured pursuant to ASTM 3574-B.sub.1, less than about 4000 pounds and at least one energy absorbing surface comprised of a flexible reinforcing layer covering the resilient polyurethane foam core. The panel is useful in a variety of applications where energy management is required. Upon impact, the panel is capable of absorbing at about 70% of the input energy. Futher, upon compression of the panel at the energy absorbing surface to about 50% by volume of the uncompressed panel in a direction substantially normal to the reinforcing layer, the panel recovers to at least about 90% of the volume of the uncompressed panel in less than about 30 minutes. The panel is particularly advantageous for use in vehicular applications such as door panels, instrument panel topper pads, air bag doors and the like.
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Raimund Christopher
Woodbridge Foam Corporation
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