Method and apparatus for coating both sides of a moving web

Details Method and apparatus for coating both sides of a moving web Method and apparatus for coating both sides of a moving web

1976-08-24

1978-02-28

Lusignan, Michael R.

Coating processes

Application to opposite sides of sheet, web, or strip

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

Patent

active

040768643

ABSTRACT:
A method and apparatus for coating both faces of a moving web, such as a paper web, in which the web is fed longitudinally at a speed in excess of 300 meters per minute, between a rotating support roller and a blade, the blade having a bevel at the point of contact with the web. Coating material is fed into the nip between the roller and the web to coat the paper web on both faces. The angle which the blade forms with is chosen to be not greater than 20.degree. and the bevel width, as measured in the direction of movement of the web, is at most 0.15 centimeters. Preferably the blade is urged against the web with a force not exceeding 0.20 kgf per centimeter width of web.

REFERENCES:
patent: 3070066 (1962-12-01), Faeber
patent: 3484279 (1969-12-01), Clark et al.

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