Paper making and fiber liberation – Apparatus – Combined
Patent
1987-07-23
1988-12-27
Lacey, David L.
Paper making and fiber liberation
Apparatus
Combined
118261, 162184, 1623601, D21D 300
Patent
active
047938994
ABSTRACT:
A coating press apparatus is disclosed for coating a first and second side of a pressed web formed in a forming section of a papermaking machine. The apparatus includes a first press roll which defines a smooth imperforate first surface. The first surface cooperates with the first side of the web. A first backing roll cooperates with the first press roll for defining therebetween a first nip for the passage therethrough of the web. A first felt supports the web during passage through the first nip and a first short-dwell coater applies a coating directly to the surface of the first press roll upstream relative to the first nip such that a smooth and even first layer of the coating substance is applied to the first side of the web during passage of the web through the first nip. A second short-well coater is disposed downstream relative to the first nip for applying a smooth and even second layer of coating substance to the second side of the web such that the first and second sides of the resultant pressed web exhibit a higher coating content than the coating content betwen the first and the second sides thereby enhancing the surface properties and resulting printability of the web.
REFERENCES:
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patent: 2772604 (1956-12-01), Muggleton
patent: 3146159 (1964-08-01), Muggleton
patent: 3518964 (1970-07-01), Nagler
patent: 4257844 (1981-03-01), Schmitt et al.
patent: 4357370 (1982-11-01), Alheid
patent: 4548840 (1985-10-01), States et al.
Archer David J.
Beloit Corporation
Campbell Raymond W.
Hasting K. M.
Lacey David L.
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