Plastic and nonmetallic article shaping or treating: processes – With printing or coating of workpiece
Reexamination Certificate
2005-04-12
2005-04-12
Colaianni, Michael P. (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
With printing or coating of workpiece
C264S255000, C264S256000, C264S261000, C264S295000, C264S339000, C156S040000, C156S041000, C156S045000, C156S202000, C156S216000, C156S221000, C156S280000
Reexamination Certificate
active
06878321
ABSTRACT:
Gypsum board having inorganic fiber, preferably glass fiber, preferably glass fiber, includes providing face sheets which have been completely impregnated with a gypsum slurry so as to penetrate through said random interstices between the inorganic fibers and to thereby cover the board surfaces with gypsum slurry. The gypsum board product is formed by passing the wet gypsum board through a board forming station having double forming plates, an upper forming plate having at least a portion thereof being set at a predetermined angle relative to a lower forming plate and having a separation between the forming plates defining a predetermined dimension substantially equal to the desired thickness of the manufactured gypsum board product. The method provides a multilayer gypsum board having a polymeric compound added to unset gypsum so as to provide a gypsum board ready for finishing.
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Fahey Michael P.
Hauber Robert J.
Hennis Mark E.
Sanders Christopher J.
BPB plc
Colaianni Michael P.
Poe Michael I.
Ryndak & Suri Vangelis Economou
LandOfFree
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