Method of producing thin balsa wood sheets

Details Method of producing thin balsa wood sheets Method of producing thin balsa wood sheets

1979-02-13

1980-05-27

Drummond, Douglas J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

144317, 144325, 144326R, 428535, B32B 3100, B27D 100, B27D 900

Patent

active

042049008

ABSTRACT:
A high-yield, low-cost technique for converting balsa wood logs into thin, flat sheets usable in model-making. In this technique, the log is first debarked and then cut to a standard bolt length. The bolt is supported for rotation in a veneer lathe which acts to peel off in spiral form a continuous web of balsa veneer. After kiln drying, dried sheets taken from this web are clipped to a usable width, the sheets at this point having a curvature as a result of their spiral memory. Then the sheets are assembled into matching pairs of opposing curvatures, each pair of sheets being laminated together in face-to-face relation to produce a two-ply flat sheet whose planarity, upon exposure, is immune to changes in relative humidity and temperature.

REFERENCES:
patent: 3908725 (1975-09-01), Koch

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