Method and device for coating webs of material, especially webs

Details Method and device for coating webs of material, especially webs Method and device for coating webs of material, especially webs

1990-02-23

1991-12-24

Wityshyn, Michael

Coating apparatus

Control means responsive to a randomly occurring sensed...

Condition of coated material

1525651, 118101, 118122, 118126, 118261, B05C 1104

Patent

active

050742434

ABSTRACT:
A method and device for coating a web (2) of material, especially a web of paper or cardboard, traveling over a backing roll (1) wherein coating is applied to the web is excess and reduced by a flow-control component (3), especially a doctor, to the desired thickness and wherein the flow-control component is secured to a beam (5) that extends over the operating width. The coating-thickness deviation from a straight line is determined over the operating width and employed as a parameter for controlling the heat emitted by a heater (16), especially heating strips, positioned on the side of the doctor beam facing away from the backing roller.

REFERENCES:
patent: 3134126 (1964-05-01), Phillips
patent: 3221357 (1965-12-01), Keyworth, Jr.
patent: 3785340 (1974-01-01), Stafford et al.
patent: 4957770 (1990-09-01), Howarth

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