Method and apparatus for fabricating gypsum board

Details Method and apparatus for fabricating gypsum board Method and apparatus for fabricating gypsum board

2007-05-29

2007-05-29

Maki, Steven D. (Department: 1733)

Adhesive bonding and miscellaneous chemical manufacture

Methods

Plaster board making

C156S347000, C156S348000, C264S296000, C425S335000, C425S385000

Reexamination Certificate

active

10263040

ABSTRACT:
A method enables gypsum/fiber board to be manufactured such that recessed areas are formed on the same face of the cut wallboard on all four edges without interrupting the production line. The system accommodates different lengths of cut wallboard as the lateral cut edge recess forming apparatus is adjustable in width to accommodate different lengths of cut wallboard.

REFERENCES:
patent: 1676318 (1928-07-01), Birdsey
patent: 1871563 (1932-08-01), Ericson
patent: 2180570 (1939-11-01), Walper
patent: 2246987 (1941-06-01), Roos
patent: 2991824 (1961-07-01), Loechl
patent: 3233301 (1966-02-01), Tillisch et al.
patent: 4734163 (1988-03-01), Eberhardt et al.
patent: 5198052 (1993-03-01), Ali
patent: 2001/0044016 (2001-11-01), Watras
patent: 58-41776 (1983-03-01), None
Abstracts for WO 2004/007162.

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