Device for applying liquid to moving web

Details Device for applying liquid to moving web Device for applying liquid to moving web

1990-04-05

1992-06-09

Wityshyn, Michael G.

Coating apparatus

Immersion or work-confined pool type

Work-confined pool

118419, B05C 502

Patent

active

051197570

ABSTRACT:
An application device for applying a liquid such as a magnetic coating liquid to the surface of a continuously moving web in which the amount of chipping of the surface portions of the outlet portion of the coating head thereof, and hence the amount of streaking in the applied layer of liquid, are remarkably reduced. The outlet portion of the application head is made of a very hard alloy, preferably tungsten carbide, containing crystal grains of a carbide 5 .mu.m or less in mean diameter conjoined to each other by a metal, preferably cobalt in an amount of 12% or less.

REFERENCES:
patent: 4424762 (1984-01-01), Tanaka et al.
patent: 4491082 (1985-01-01), Barch et al.
patent: 4577362 (1986-03-01), Tanaka et al.

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