Appeal 2006-2300
Application 10/615,746
13) Londrigan discloses that more than one fibrous web may be used
as reinforcement materials (Londrigan, col. 14, ll. 17-19).
14) In Figure 2, Londrigan discloses the use of three reinforcement
webs, an upper material 52 and lower materials 52’ and 48 (Londrigan,
col. 14, ll. 19-21). The reinforcement materials are fed to the apparatus
along with respective adjacent upper and lower facing sheets
(Londrigan, col. 14, ll. 37-39). The reinforcement materials may be the
same or different types of fibrous webs including an expandable glass
mat (Londrigan, col. 14, ll. 23-31).
15) Hoffmann discloses a process and a laminator for the continuous
production of laminates of foam with facings wherein “[a]n upper facing
and a lower facing and a web of meshwork are introduced into the
foaming space of a laminator and a fluid reaction mixture is spread over
the lower facing before it runs into the foaming space. The reaction
mixture penetrates the web of meshwork as it foams up on its journey
through the foaming space and becomes bonded to the facings”
(Hoffmann, col. 1, ll. 10-16).
16) In one embodiment, the lower facing comprises a prefabricated
composite web of facing and meshwork web (claim 3). The web may be
bonded to the facing by adhesive or welding.
17) Hoffmann states that “[i]t is well known to cover the back of
facings with non-woven fiber webs or to run them into the foaming
“Two facing sheets of aluminum foil, each having a thickness of about
0.0015 inches are positioned one on each side of the glass fiber mat and
foam-forming mixture” to produce a structural laminate.
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Last modified: September 9, 2013