Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1973-12-10
1976-07-20
Powell, William A.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
52309, 52615, 156 90, 156312, 156286, 156333, 428313, 428322, 428320, 428461, B32B 700
Patent
active
039705021
ABSTRACT:
An improved building panel is disclosed comprising a foam core having bonded to opposite sides thereof an outer skin or cover plate. The outer skins are bent along the two longwise edges thereof and receive a wooden edging member therebetween, the edging member being bonded to both the outer skins and the foam core. The edging members are preferably tongue and groove, i.e., having a tongue construction along one longitudinal edge of the panel and a groove construction along the opposite longitudinal edge of the panel. The tongued edging has a plurality of latch means disposed therealong while the grooved edge has a plurality of matching latch pins disposed therealong, said tongue and groove construction and latches and latch pins enabling a rigid connection between adjacent panels. A superior panel is produced that avoids delamination under extreme conditions. The bond is produced by a two adhesive system. A first adhesive is applied to the foam core and a second adhesive is applied to the outer skins and edging members. The foam core adhesive must be compatible with the foam and the second adhesive and preferably is a water base polychloroprene adhesive. The second adhesive, applied to the outer skin and edging is a solvent based adhesive which is normally incompatible with the foam. When the two adhesives are brought together in a virtually non tacky state, however, the foam core adhesive prevents destruction of the foam by the solvent based adhesive and, upon curing, the two adhesives provide a superior laminate bond. A process for manufacturing the panel is also disclosed and claimed.
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Gallagher J. J.
Manning, Jr,. Wellington M.
Powell William A.
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