Method and machine for fabricating building boards

Details Method and machine for fabricating building boards Method and machine for fabricating building boards

1982-05-07

1984-08-07

Chin, Peter

Paper making and fiber liberation

Processes and products

Non-fiber additive

162146, 162154, 162212, 162216, D21H 366

Patent

active

044642253

ABSTRACT:
A method and machine for fabricating building boards or the like, especially asbestos cement plates, contains a turbulence device having at least one channel with a step-shaped widened portion. The channel either has the form of a slot extending over the entire width of the machine or there are provided a series of cylindrical bores forming essentially parallel channels. An intermediate chamber or compartment merges with the channel or channels. Leading from the intermediate chamber is an outlet gap to the upper surface of a felt band.

REFERENCES:
patent: 1968028 (1934-07-01), Clements
patent: 2177643 (1939-10-01), Ferla
patent: 2718824 (1955-09-01), Hornbostel
patent: 2732296 (1956-01-01), Simpson
patent: 2764917 (1956-10-01), Niks
patent: 2860552 (1958-11-01), Corbin
patent: 2876684 (1959-03-01), Fusco
patent: 2970938 (1961-02-01), Erbach
patent: 3164513 (1965-01-01), Calehuff
patent: 3725197 (1973-04-01), Dahl et al.
patent: 4192710 (1980-03-01), Bubik et al.

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