Coating processes – With post-treatment of coating or coating material – Coating material recirculation or regeneration
Reexamination Certificate
2006-04-04
2006-04-04
Bareford, Katherine (Department: 1762)
Coating processes
With post-treatment of coating or coating material
Coating material recirculation or regeneration
C427S356000, C427S359000, C427S361000, C118S602000, C118S118000, C118S119000, C118S123000, C118S126000
Reexamination Certificate
active
07022380
ABSTRACT:
Method and apparatus for coating a traveling paper web includes a coater head. The coater head includes an inlet for receiving fresh coating material which is introduced into a mixing chamber. A looped flow path is established within the coater head which includes a feed channel extending from the mixing chamber and leading into a coating chamber where one portion of the coating material proceeds in the direction of the rotating backing roll. The aqueous slurry of coating material near the downstream end of the coating chamber enters a recirculation channel from which it is directed through a plurality of flow metering orifices back into the mixing chamber.
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George Brian J.
Lan Xuekui
Bareford Katherine
Metso Paper Inc.
Mitsubishi Heavy Industries
Stiennon & Stiennon
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