Curtain coating apparatus

Details Curtain coating apparatus Curtain coating apparatus

1973-09-28

1976-07-13

McIntosh, John P.

Coating apparatus

Projection or spray type

Flexible web or strand work

118DIG4, B05C 5.00

Patent

active

039687724

ABSTRACT:
In a method of coating a support with a liquid coating composition in which the coating composition is applied by impingement of a free-falling curtain of coating composition onto the surface of the moving support, formation of edge beads along the edges of the coating which are of greater thickness than the remainder of the coating is effectively avoided by use of laterally adjustable edge guides which are initially positioned so as to establish a stable free-falling curtain and then moved laterally to a position in which they are slightly further apart, whereby the coating assumes a uniform thickness. Apparatus for effecting this improvement in the coating process includes clamping means for holding the edge guides in a vertical position and means for effecting controlled lateral movement of the clamping means. The method and apparatus of this invention are useful in both single layer and multiple layer curtain coating and are especially advantageous in the manufacture of photographic film and photographic paper in view of the need for precisely uniform thickness over the entire coated area.

REFERENCES:
patent: 2322827 (1943-06-01), Carver
patent: 3205089 (1965-09-01), Kinzelman
patent: 3271184 (1966-09-01), Poletika et al.
patent: 3303816 (1967-02-01), Lauring
patent: 3365325 (1968-01-01), Fraenkel et al.
patent: 3508947 (1970-04-01), Hughes

Affiliated with

Also associated with

Rating

Curtain coating apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Curtain coating apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Curtain coating apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1734780