Method of brushing incompletely dried coating regions from a coa

Details Method of brushing incompletely dried coating regions from a coa Method of brushing incompletely dried coating regions from a coa

1993-06-14

1994-10-25

Beck, Shrive

Coating processes

With winding, balling, rolling, or coiling

427271, 427277, 427278, 427368, B05D 312

Patent

active

053587375

ABSTRACT:
A coating system for applying to a face of a moving continuous web a coating of predetermined thickness of a liquid coating composition, thereafter drying the thus-coated web under substantially constant drying condition, and collecting the dried coated web on a take-up roll, is provided with an arrangement for removing from the coating any portions exceeding the predetermined thickness which would not be completely dried during drying and would adhere to and contaminate surfaces coming in contact therewith, such as guide roller surfaces or the adjacent windings on the take-up roll. The arrangement includes web wiping means for contacting excessively thick regions of the coating which is adapted to be displaced from an inoperative position remote from the web to an operative position contacting the excessively thick regions of the coating, the displacement being actuated in response to the detection on the web of excessively thick coating regions. The web wiping means is driven in its operative position in a continuous, e.g. circular, path having a locus intersecting the web path and preferably is a cylindrical brush of flexible bristles. The removed coating portions may be cleaned from the wiping means e.g. by a scraper and aspirated away by suction.

REFERENCES:
patent: 2743572 (1956-05-01), Hiensch
patent: 3908588 (1975-09-01), Daunheimer et al.
patent: 4630407 (1986-12-01), Rhodes
patent: 4704803 (1987-11-01), Valentini
patent: 4941865 (1990-07-01), Skudrzyk

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