Appeal No. 1996-2703
Application 08/339,637
comprise at least about 10 wt% of the composition (col. 2,
line 69 - col. 3, line 12).
Fell discloses an adhesive for use on the face sheets of
honeycomb sandwich panels in applications such as aerospace
assemblies (col. 1, lines 17-24). Fell teaches that the
curing time of thermosetting resins such as epoxy resins
generally is several hours, and that the cycle time for
bonding face sheets to honeycomb cores can be reduced to only
seconds by use of a thermoplastic adhesive or an adhesive
generally containing no more than about 20 wt% thermosetting
resin, the remainder being thermoplastic resin (col. 1, lines
23-24 and 33-43; col. 3, lines 15-27; col. 3, line 66 - col.
4, line 2).
Lynam discloses that when honeycomb sandwich panels are
made for applications such as aircraft assemblies, forming
adhesive fillets at the junctions of the facing panels and the
honeycomb cores increases the bond strength because the
bonding area extends beyond the edges of the core material up
the walls of the cells and partially onto the inner face of
the panels (col. 1, lines 7-20 and 30-35). The adhesive may
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