Method and apparatus of manufacturing glued laminated wood

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

Reexamination Certificate

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C156S182000, C156S307700, C156S304500, C144S344000, C144S348000, C144S352000

Reexamination Certificate

active

10910626

ABSTRACT:
A method and apparatus of manufacturing glued laminated wood such as laminated veneer lumber (LVL) are disclosed. The glued laminated wood is made of a number of wood sheets such as veneer sheets which are laminated together by a hot press with a thermosetting adhesive into a continuous length of multiple-layered board of the glued laminated wood wherein wood sheets in each layer of the multiple-layered board are arranged in a staggered relation in the lengthwise direction of the board to wood sheets in an adjacent layer. The hot press has a pair of heating plates arranged substantially in facing relation to each other and an auxiliary heating plate disposed adjacent to one end of each heating plate. The auxiliary heating plate is adapted to press part of wood sheet which extends out beyond the above end of the heating plate.

REFERENCES:
patent: 3963552 (1976-06-01), Troutner et al.
patent: 4017248 (1977-04-01), Dieffenbacher et al.
patent: 4608106 (1986-08-01), Lahtinen
patent: 6280560 (2001-08-01), Graf
patent: 6865800 (2005-03-01), Utecht et al.
patent: 1 400 327 (2004-03-01), None
patent: 53-018707 (1978-02-01), None
patent: 53-041408 (1978-04-01), None
patent: 53-075313 (1978-07-01), None
patent: 54-011215 (1979-01-01), None
patent: 55-123404 (1980-09-01), None
J.C. Bohlen; “LVL Lamniated-Veneer Lumber—Development and Economics”; Forest Prod. J. vol. 22, No. 1, 1972 with partial translation.
European Search Report dated Dec. 2, 2003.

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