Coating apparatus – Solid applicator contacting work – With work-handling or work-supporting
Patent
1995-09-01
1997-04-15
Edwards, Laura
Coating apparatus
Solid applicator contacting work
With work-handling or work-supporting
118210, 118212, 118258, 118263, B05C 108
Patent
active
056205147
ABSTRACT:
A magnetizable layer can be applied to a flexible backing web by gravure coating at high speeds by independently driving the backing web at a speed that is substantially different from the surface speed of the gravure roll. Especially high coating speeds have been achieved when the gravure roll rotates oppositely to the direction in which the backing web is advancing. In one embodiment, a nip roll presses the backing web against the backup roll, there is a gap between the gravure roll and a backup roll, and an idler roll is positioned downstream of the gap to force the backing web into contact with the gravure roll over a short arc. When that backup roll has a hard surface such as metal, its surface can be machined with precision, and that precision can be maintained in spite of exposure to solvent vapors.
REFERENCES:
patent: 1414449 (1922-05-01), Witzig
patent: 3468700 (1969-09-01), Long
patent: 3761311 (1973-09-01), Perrington et al.
patent: 4254585 (1981-03-01), Schoettle et al.
patent: 4298631 (1981-11-01), Mikura et al.
patent: 4313981 (1982-02-01), Namiki
patent: 4361627 (1982-11-01), Ohata
patent: 4391851 (1983-07-01), Yamada et al.
patent: 4499121 (1985-02-01), Yamaguchi et al.
patent: 4499122 (1985-02-01), Economy et al.
patent: 4519757 (1985-05-01), Wittkopf et al.
patent: 4547393 (1985-10-01), Asai et al.
patent: 4577077 (1986-03-01), Kawamata
patent: 4672705 (1987-06-01), Bors et al.
patent: 4684547 (1987-08-01), DiStefano et al.
patent: 4870920 (1989-10-01), Kageyama et al.
patent: 4872246 (1989-10-01), Yano
patent: 4911951 (1990-03-01), Ogawa et al.
patent: 4917040 (1990-04-01), Suzuki
patent: 4962578 (1990-10-01), Saito et al.
patent: 5101759 (1992-04-01), Hefele
Benkreira et al.: "Direct Gravure Roll Coating", Chemical Engineering Science, vol. 48, No. 12, 1993, pp. 2329-2335.
Benkreira et al.: "Gravure Roll Coating of Low Viscosity Liquids", Surface Coatings International JOCCA, vol. 75, No. 7, Jul. 1992, pp. 261-268.
Patel et al.: "Gravure Roll Coating of Newtonian Liquids", Chemical Engineering Science, vol. 46, No. 3, 1991, pp. 751-756.
Pulkrabek et al.: "Knurl Roll Design for Stable Rotogravure Coating", Chemical Engineering Science, vol. 38, No. 8(1983), pp. 1309-1314.
Witt: "Reverse Gravure . . . Part I", Paper, Film & Foil Converter, vol. 51, Aug. 1977, pp. 41-43.
Witt: "Reverse Gravure . . . Part II", Paper, Film & Foil Converter, vol. 51, Sep. 1977, pp. 51-53.
Brost Michael J.
Gehrke Norman E.
Kuck Kevin K.
Lam Joseph H.
Lewis Donald M.
Edwards Laura
Griswold Gary L.
Kirn Walter N.
Levine Charles D.
Minnesota Mining and Manufacturing Company
LandOfFree
Differential-speed gravure coating of magnetizable layers in the does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Differential-speed gravure coating of magnetizable layers in the, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential-speed gravure coating of magnetizable layers in the will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-357491