Composite panel having in-situ thermoset foamed core

Details Composite panel having in-situ thermoset foamed core Composite panel having in-situ thermoset foamed core

2007-01-31

2010-11-30

Aftergut, Jeff H (Department: 1791)

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

C156S078000, C156S079000, C156S256000, C156S292000

Reexamination Certificate

active

07842147

ABSTRACT:
A method for making a composite panel, wherein the composite panel has a honeycomb core sandwiched between a pair of facing sheets, includes the steps of (a) coating the interior walls of the cells with a unexpanded thermo-expandable material; (b) bonding a pair of facing sheets to the opposite sides of the honeycomb core; and (c) heating the honeycomb core while the honeycomb core is sandwiched between the pair of facing sheets with sufficient heat to cause the thermo-expandable material to expand and to substantially fill the cells.

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