Method and apparatus for making asbestos-cement boards

Paper making and fiber liberation – Processes and products – Mineral fiber

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162199, 162217, 162279, 162299, 162304, 162314, 162315, 162320, 162343, 162361, 162368, 162396, C04B 1516

Patent

active

041499301

ABSTRACT:
An improvement in the method and apparatus for fabricating asbestos-cement boards, wherein a felt band coated with fiber fleece is fed to a pair of press rollers in nip relationship and wherein the coating of the felt band with fiber fleece is effected by wet deposition on the felt band and by suction from the side opposite same.
The fiber fleece obtained by wet deposition on the felt band following the deposition is condensed and dehydrated by a system consisting of a sieve cylinder and of an associated suction roller operating in nip relationship.

REFERENCES:
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patent: 141358 (1873-01-01), Keely
patent: 1599385 (1926-09-01), Pryor
patent: 2073654 (1937-03-01), Smiley
patent: 2083819 (1937-06-01), Berry
patent: 2235176 (1941-03-01), Schless
patent: 2972378 (1961-02-01), Nuyens
patent: 3047457 (1962-07-01), Knauf
patent: 3190790 (1965-06-01), Ploetz et al.
patent: 3325350 (1967-06-01), Veryly
patent: 3859163 (1975-01-01), Hawthornthwaite
"A Dict. of Paper & Papermaking Terms," La Barre, (1937), pp. 111, 112, 1 4.

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