Blow line addition of thermosettable binder in fiberboard...

Details Blow line addition of thermosettable binder in fiberboard... Blow line addition of thermosettable binder in fiberboard...

B - Operations, Transporting

27

N

18/1011

B27N 3/00 (2006.01) C08L 97/02 (2006.01) D21J 1/00 (2006.01) C08L 75/04 (2006.01)

Patent

CA 1174421

B 1150 12/21/82 BLOW LINE ADDITION OF THERMOSETTABLE BINDER IN FIBERBOARD MANUFACTURE UTILIZING COOLED NOZZLE Abstract A method and apparatus for producing a synthetic board from cellulosic and/or lignocellulosic materials wherein a thermosettable binder, preferably a polyisocyanate binder, is applied through a cooled nozzle to the hot and wet fibrous material in the blow line out of the refiner of a board forming process. Polyphenylpolyisocyanates, such as a mixture of diphenylmethane-4,4'-diisocyanate and polymethylene polyphenyl polyisocyanates, are a particularly suitable binder.

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