Coating processes – Nonuniform coating – Striping
Patent
1994-11-14
1996-10-29
Bareford, Katherine
Coating processes
Nonuniform coating
Striping
427294, 427420, 118324, 118326, 118DIG4, B05D 130, B05C 500
Patent
active
055694926
ABSTRACT:
The present invention is a method and apparatus for curtain coating a support with one or more layers of a liquid coating composition. Stripes of a liquid coating composition are formed at the edges of the free falling curtain. These stripes are guided by edge guides which are positioned so that there is an uncoated margin of support at each edge of the support. Liquid is removed from the edges of the free falling curtain near the point of impingement on the support. Drag that emanates from the edge guide is contained within the stripe which is removed thereby producing a more uniform coating. In addition free falling curtains having an extremely low flow rate can be coated that previously were not possible.
REFERENCES:
patent: 3508947 (1970-04-01), Hughes
patent: 3867901 (1975-02-01), Greiller
patent: 4019906 (1977-04-01), Ridley
patent: 4233346 (1980-11-01), Kerkhofs
patent: 4297396 (1981-10-01), Takehara et al.
patent: 4479987 (1984-10-01), Koepke et al.
patent: 4830887 (1989-05-01), Reiter
patent: 4977852 (1990-12-01), Ishizuka
patent: 5382292 (1995-01-01), Conroy et al.
M.G. Antoniades, "A New Method of Measuring Dynamic Surface Tension", Journal of Colloid and Interface Science, vol. 77, No. 2, Oct. 1980.
Devine William D.
Ruschak Kenneth J.
Bareford Katherine
Eastman Kodak Company
Rosenstein Arthur H.
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