Paper having calcium sulfate mineral filler for use in the produ

Details Paper having calcium sulfate mineral filler for use in the produ Paper having calcium sulfate mineral filler for use in the produ

1983-01-31

1984-09-11

Chin, Peter

Paper making and fiber liberation

Processes and products

Multi-layer waterlaid webs or sheets

156 39, 156 41, 162128, 162135, 162158, 1621681, 1621682, 1621683, 162169, 1621811, 1621812, 1621813, 162183, 4285377, 428703, B32B 1308

Patent

active

044708777

ABSTRACT:
A composite paper particularly adapted for use as cover sheets in the production of gypsum wallboard, the paper being sufficiently porous to permit better drainage and more rapid drying in the production of the paper, and when applied to the surfaces of a gypsum slurry for forming wallboard, permits less heat to be utilized in the wallboard conversion, thereby saving energy in the board production required for drying the board. The paper comprises in weight percent:

REFERENCES:
patent: 3102064 (1963-08-01), Wurzburg et al.
patent: 3300371 (1967-01-01), Hart
patent: 4064317 (1977-12-01), Fukuba et al.
patent: 4204030 (1980-05-01), Takamizawa et al.
patent: 4311767 (1982-01-01), Kennedy

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