Apparatus and method for applying a liquid to a moving web

Details Apparatus and method for applying a liquid to a moving web Apparatus and method for applying a liquid to a moving web

1987-06-16

1989-07-18

Beck, Shrive

Coating apparatus

Solid applicator contacting work

With work-handling or work-supporting

118117, 118119, 118206, B05C 108

Patent

active

048482684

ABSTRACT:
Apparatus for applying a liquid coating onto a moving web has one or preferably two rotatable rollers. In the two roller embodiment both rollers lie on the same plane which is at or near the horizontal. The two roller embodiment positions the rollers adjacent each so as to form a press nip between them. The moving web makes contact with one of the rollers, or the single roller along an extended circumferential arc of the roller. Adjacent each roller is a supply apparatus for depositing a liquid on to a portion of the roller jacket not in contact with the web. Wiper rods are associated with each supply apparatus and are biased against the jacket of the roller to make the coating of liquid uniform. Surplus liquid is used to wash the rollers to remove web fibers and glue and pigment particulate to avoid contamination thereby of the supply apparatus and wiper rods. The surplus liquid and fibers and particulate are collected in sumps.

REFERENCES:
patent: 2676563 (1954-04-01), Montgomery et al.
patent: 2729192 (1956-01-01), Warner
patent: 2946307 (1960-07-01), Warner
patent: 2970564 (1961-02-01), Warner
patent: 3084663 (1963-04-01), Warner
patent: 3387585 (1968-06-01), Farrell
patent: 3511693 (1970-05-01), Davidson
patent: 4316428 (1982-02-01), Flaum et al.
patent: 4357370 (1982-11-01), Alheid
Wochenblatt for Papierfabrikation 1973, pp. 164 to 169.
Wochenblatt for Papierfabrikation 1978, pp. 773 to 778.

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