Process for the production of fiber-containing plaster boards

Details Process for the production of fiber-containing plaster boards Process for the production of fiber-containing plaster boards

1979-03-27

1980-07-22

Dixon, Jr., William R.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including grain, strips, or filamentary elements in...

428114, 428246, 156 42, 156 45, B32B 512, B32B 318, B32B 3114

Patent

active

042140277

ABSTRACT:
Fiber containing plaster boards are prepared by superimposing a plurality of board blanks one on top of the other such that the direction of the fiber orientation in the superimposed blanks deviates one from the other. The board blanks are formed in a conventional manner from a suspension of calcium sulfate capable of setting, reinforcing fibers and a quantity of water beyond the quantity of water necessary for setting the calcium sulfate capable of setting. After mechanically removing excess water from the suspension to form the board blanks, two or more of these blanks are placed one on top of the other and are connected under pressure and dried. Thereafter, a predetermined number of board blanks having a direction of the fiber orientation deviating one from the other, are placed one on top of the other and are pressed together prior to or during the setting of the calcium sulfate.

REFERENCES:
patent: 3216881 (1965-11-01), Pfeifer et al.
patent: 3944698 (1976-03-01), Dierks et al.
patent: 4065597 (1977-12-01), Gillespie

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