Appeal 2006-2300
Application 10/615,746
RELEVANT FINDINGS OF FACT
1) Londrigan discloses a method for continuous production of a
polymeric foam board.
2) According to the method, flexible facing materials are fed from
supply rolls, i.e., a roll 30 of lower facing material 31, and a roll 30' of
upper facing material 31' (Londrigan, col. 12, ll. 41-44).
3) The flexible facing materials are in the form of continuous or
semicontinuous sheets (Londrigan, col. 12, ll. 27-29).
4) Londrigan discloses that a wide variety of materials are
employable as the upper and lower facing material. Suitable materials
include a steel or aluminum metal sheet, asphalt-saturated felt, an asphalt
fiber glass sheet, a fiber glass sheet, paper, paperboard, a metal or plastic
foil, and combinations thereof (Londrigan, col. 12, ll. 30-40).
5) In accordance with Londrigan’s process, foamable chemicals are
dispensed to either lower facing material 31 or upper facing material 31’
prior to passing through metering rollers 32 and 33. Metering rollers
bring the upper and lower facing materials 31’, 30 in surface-to-surface
opposition relative to each other, with the foamable mixture sandwiched
in between (Londrigan, col. 13, ll. 32-43).
6) Londrigan discloses the use of polyurethane or polyisocyanurate
foam-forming mixes (Londrigan, col. 15, ll. 6-8).
7) According to Londrigan, “[a] preferred method for the production
of froth foams of the invention is disclosed in U.S. Pat. No. 4,572,865”
(Londrigan, col. 9, ll. 29-31).
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