Manufacture of multilayer panels using polyisocyanate:...

Details Manufacture of multilayer panels using polyisocyanate:... Manufacture of multilayer panels using polyisocyanate:...

B - Operations, Transporting

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B

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B32B 21/00 (2006.01) C08G 18/00 (2006.01) C08G 18/08 (2006.01) C08L 97/02 (2006.01)

Patent

CA 1053558

MANUFACTURE OF MULTILAYER PANELS USING POLYISOCYANATE:FORMALDEHYDE BINDER SYSTEM Abstract of the Disclosure Multiple ply structural panels, such as veneer-overlayed particleboard panels, are manufactured by bonding together the component materials under conditions of elevated pressure and tem- perature using a binder system comprising an organic polyiscyan- ate and formaldehyde. Through the use of this novel binder sys- tem, structural panels may be produced incorporating quantities of tree-derived materials such as bark and evergreen needles, pre- viously considered unusable. Moreover, the physical properties and moisture resistance of the resultant products are competitive with those of conventional wood-based structural panels.

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