Method and apparatus for applying coating compositions to strip

Details Method and apparatus for applying coating compositions to strip Method and apparatus for applying coating compositions to strip

1975-02-18

1977-09-06

Smith, Ronald H.

Coating processes

Roller applicator utilized

118249, 118253, 118255, 118259, 118262, B05D 128

Patent

active

040469310

ABSTRACT:
A coating material such as a high viscosity, low solvent content paint is applied to metal strip by means of a coater which comprises a soft-covered take-up roll which draws coating material from a reservoir and coacts with a hard metering roll (from which excess coating material is continuously removed by a doctor blade), to form a metered film on the surface of the take-up roll. The metered film is transferred to a small diameter hard transfer roll from which it is in turn transferred to a soft covered applicator roll, by which it is applied to the strip. At each line of contact between two rolls or between the applicator roll and the strip the mutually contacting surfaces travel in opposite directions (i.e., the rolls all rotate in the same sense). Preferably the peripheral speed of the applicator roll is greater than that of the transfer roll, which is greater than that of the take-up roll, but the strip speed is preferably lower than that of the applicator roll.

REFERENCES:
patent: 2094348 (1937-09-01), Carlson
patent: 2556262 (1951-06-01), Faeber
patent: 2689196 (1954-09-01), Daniels
patent: 2772184 (1956-11-01), Wolfe et al.
patent: 2802752 (1957-08-01), Wood
patent: 3068119 (1962-12-01), Gotsch
patent: 3158497 (1964-11-01), Fird et al.

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