Finger jointing green lumber

Details Finger jointing green lumber Finger jointing green lumber

B - Operations, Transporting

27

F

144/95

B27F 1/00 (2006.01)

Patent

CA 2000061

FINGER JOINTING GREEN LUMBER ABSTRACT OF DISCLOSURE Finger jointed lumber is produced from discrete green lumber pieces each formed with a first set of fingers on one end and a second set of fingers at the other end. The first set of fingers is dried by rapidly applying heat substantially solely through the first set of fingers in a first drying station. The second set of fingers is then rapidly dried in a second drying station. A thermo-setting adhesive is applied to the second set of fingers of each lumber piece while still hot and the second set of fingers on one piece and the first fingers on an adjacent lumber piece are mated and crowded together to form a joint. The adhesive is significantly cured by residual heat in the mating ends before significant moisture migrates back to the fingers from the bodies of the mating lumber pieces and interferes with the curing of the adhesive.

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