Doctor blade apparatus for coating apparatus

Details Doctor blade apparatus for coating apparatus Doctor blade apparatus for coating apparatus

1985-04-10

1986-10-07

McIntosh, John P.

Coating apparatus

Solid applicator contacting work

Movably mounted applicator

118212, 118249, B05C 108

Patent

active

046152954

ABSTRACT:
A coater includes a gravuer roll rotatably mounted in a fountain of coating material. A doctor blade engages the roll and doctors material from the surface. A curved predoctor deflector opens upstream of the material and has an inclined upper edge at about the level of the material to form a wedge-shaped gap forcing material into the roll. The deflector bottom is spaced from the fountain bottom to define a return path. A curved deflector at the doctor blade collects doctored material from the doctor blade and returns it to the return path. The predoctor generates a reverse material flow in the fountain creating a pressure at the return path to create a smooth circulation of coating material and essentially constant level in the said container.

REFERENCES:
patent: 2157874 (1939-05-01), Webb

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