Applicator for coating a traveling fiber web

Details Applicator for coating a traveling fiber web Applicator for coating a traveling fiber web

1996-04-18

1998-04-07

Edwards, Laura

Coating apparatus

Immersion or work-confined pool type

Work-confined pool

118413, 118419, 118123, 118126, B05C 500

Patent

active

057359563

ABSTRACT:
The invention is directed to an applicator for coating a traveling fiber web with a coating mixture. The applicator includes a backing roll having a shell surface for carrying the web, and a nozzle for feeding the coating mixture. The applicator includes a support beam; a nozzle which is integral with or connected to the support beam; and a doctor bar carried by the support beam. The doctor bar has a guide surface. The guide surface and the backing roll define a nip for producing a hydrodynamic pressure. The guide surface approaching the shell surface of the backing roll extends to an exit edge at a location nearest the backing roll. A device is provided for flexibly backing the doctor bar on the support beam.

REFERENCES:
patent: 4688516 (1987-08-01), Sommer
patent: 4870920 (1989-10-01), Kageyama et al.
patent: 5103759 (1992-04-01), Henseler et al.
"Erste Erfahrungen mit Neuentwicklungen von Auftrag-ung Dosiersystemen--Hydro-Bar und Jetcoat", Wochenblatt fur Papierfabrikation, 23/24, 1983, pp. 875-885.

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