Apparatus and method for uniformly coating an irregular web

Details Apparatus and method for uniformly coating an irregular web Apparatus and method for uniformly coating an irregular web

1986-02-18

1987-06-30

Lusignan, Michael R.

Coating processes

With post-treatment of coating or coating material

Solid treating member or material contacts coating

118123, 118246, 427428, B05C 100, B05C 1102, B05D 128, B05D 312

Patent

active

046770020

ABSTRACT:
An apparatus and method for applying a smooth uniform coating to a web (W) having variations in thickness and density and surface irregularities is disclosed. The invention includes a vertical floating pressure table (B) which supports the traveling web (W) against a transfer roll (20) and a scrape blade (46). Coating material (C) metered by a doctor blade (34) is applied to the transfer roll (20) at (40) and then applied to the web in a uniform layer (78). The pressure table (B) is supported against the web by a counter-balancing linkage arrangement (D) which maintains a constant uniform pressure on the table (B) and web (W) regardless of the vertical movements of a table platform (60) in response to web variations an irregularities. A smooth uniform coating (80) is provided.

REFERENCES:
patent: 2614522 (1952-10-01), Snyder
patent: 4279949 (1981-07-01), Esser
patent: 4601256 (1986-07-01), Poterala

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