Method and apparatus for coating a moving web

Details Method and apparatus for coating a moving web Method and apparatus for coating a moving web

1976-08-24

1979-01-09

Lusignan, Michael R.

Coating processes

Application to opposite sides of sheet, web, or strip

118404, 118126, 118405, 118407, 118413, 427211, 427356, 427361, B05D 312

Patent

active

041339177

ABSTRACT:
A method and apparatus for coating at least one face of a moving web, such as a paper web, in which the web is fed longitudinally at a speed in excess of 400 meters per minute between a movable support and a blade forming, with the movable support, a nip. The blade has a bevel at the point of contact with the web, and an excess of coating material is applied at one side of the web in the nip, the coating material having a dryness content exceeding 60% and/or a viscosity exceeding 1500 cp. The angle of the blade is controlled so that it extends at most 20.degree. to the web and the bevel width, as measured in the direction of movement of the web, is at most 0.05 centimeters. Preferably, the blades are urged against the web with a force not exceeding 2 kgf per centimeter width of web.

REFERENCES:
patent: 3070066 (1962-12-01), Facher
patent: 3097107 (1963-07-01), Martinek
patent: 3442684 (1969-05-01), Wordham et al.
patent: 3484279 (1969-12-01), Clark et al.

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