Method for applying a liquefiable material onto a substrate conv

Details Method for applying a liquefiable material onto a substrate conv Method for applying a liquefiable material onto a substrate conv

1986-09-18

1988-08-09

Lawrence, Evan K.

Coating processes

Measuring, testing, or indicating

427209, 427244, B05D 126

Patent

active

047627271

ABSTRACT:
Method for applying a liquefiable material in form of a foam or a high-viscosity solution from a storage container onto a substrate which is conveyed in form of a web, with the aid of an application device which is provided with at least one discharge opening which is oriented in a line transversely to the direction the web is moving. A stream of the liquefiable material is introduced at one end of the application device. This stream is metered and the quantity passing through per time unit is measured. Part of the stream of liquefiable material is discharged at the other end of the application device and conducted back to the storage container, and also the flow-through quantity per time unit is measured. The difference of the measured quantities passed through per time unit is compared to a nominal value. The parts of the stream are dosed such that the difference of the measured quantities passing through per time unit approaches the nominal value.

REFERENCES:
patent: 4237818 (1980-12-01), Clifford et al.
patent: 4381730 (1983-05-01), Arthur

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