Coating apparatus – Immersion or work-confined pool type – Work-confined pool
Patent
1996-09-16
1998-07-07
Lamb, Brenda A.
Coating apparatus
Immersion or work-confined pool type
Work-confined pool
118410, B05C 302
Patent
active
057762520
ABSTRACT:
An assembly, for preventing striping in an applicator used for coating a paper or paperboard web, comprising a doctor blade suitable for metering and smoothing a coat to be applied, a cross-machine elongated application chamber adapted immediately in front of the doctor blade, one of the sides of the chamber being formed by the web being coated. A flexible leading blade forming a front sealing edge of the chamber has a perforated stem with openings to allow coating mix from the application chamber to travel in front of the leading blade. A homogenizing chamber is formed in front of the openings in the leading blade using a dam lip or similar flow barrier. The flow exiting the openings of the leading blade is homogenized in the homogenizing chamber as the flow impinges against the flow barrier.
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patent: 5366551 (1994-11-01), Aidun
Lamb Brenda A.
Valmet Corporation
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