Method of applying a liquid to a moving web

Details Method of applying a liquid to a moving web Method of applying a liquid to a moving web

1986-11-14

1988-01-05

Pianalto, Bernard D.

Coating processes

Immersion or partial immersion

Running lengths

427128, 4274345, H01F 1002, B05D 118

Patent

active

047176032

ABSTRACT:
A method of applying a liquid to a moving web while pushing an extrusion application head to the moving web without supporting the moving web on the reverse side thereof. The application is performed while the accumulation of the liquid to be applied to the moving web is maintained by (a) the moving web and (b) an edge of the back blade of the extrusion application head, the edge being defined by the intersection of (1) a first surface of the back blade which faces the front blade and which is nearest the web, and (2) a second surface of the back blade which is more remote from the front blade than the first surface and, wherein the pressure of the liquid of the accumulation located between the web and the outlet portion of the slit of the extrusion application head is set within a range from 0.2 kg/cm.sup.2 gauge to 0.8 kg/cm.sup.2 gauge per 50 cm of width of applied liquid.

REFERENCES:
patent: 3679476 (1972-07-01), Van Oosterhout et al.
patent: 4424762 (1984-01-01), Tanaka et al.
patent: 4480583 (1984-11-01), Tanaka et al.

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