Edge dam for paper coating apparatus and method

Details Edge dam for paper coating apparatus and method Edge dam for paper coating apparatus and method

1982-09-13

1984-01-17

McIntosh, John P.

Coating processes

With post-treatment of coating or coating material

Solid treating member or material contacts coating

118410, 118413, B05C 318

Patent

active

044264127

ABSTRACT:
An edge dam for an applicator for applying a film of coating liquid to a moving web of paper carried through an application zone, is characterized by a seal element at each side end of the zone for substantially sealing the side end of the zone, thereby to impede a flow of coating material out of the zone. At least one orifice is formed through the seal element outwardly of the zone, and the orifice is connected with a supply of water under pressure for directing a flow of water against the peripheral edge of the web moving therepast, thereby to wet the edge and flush the same of any coating material seeping past the element. In consequence, edge stickers and coating liquid pickup on the web edge are substantially eliminated.

REFERENCES:
patent: 2618575 (1952-11-01), Oswin
patent: 3032007 (1962-05-01), McCauliff
patent: 3169082 (1965-02-01), Krikorian
patent: 3252443 (1966-05-01), Growdon et al.
patent: 4327662 (1982-05-01), Damrau

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