Coating method employing ultrasonic waves

Details Coating method employing ultrasonic waves Coating method employing ultrasonic waves

1993-04-16

1994-08-09

Beck, Shrive

Coating processes

Direct application of electrical, magnetic, wave, or...

Sonic or ultrasonic

427457, B05D 312

Patent

active

053365348

ABSTRACT:
A coating method by which the speed of coating can be improved remarkably regardless of the number of polar groups on the surface of a web and irrespective of the properties of material for the web. A coating solution flowing out of a liquid injector is applied to a web supported by a coating backup roller. A high frequency signal from a master oscillator is amplified and applied to a vibrator. Ultrasonic waves generated in the vibrator are guided by a horn to be radiated to the contact line between the coating solution and the web. With the invention it is possible to prevent a coating solution from being intermittently applied to a web, and it is also possible to increase the coating limit speed, for example, by 5 to 26%. In addition, lateral stair-stepped unevenness of thickness is not produced in the coating layer.

REFERENCES:
patent: 3645735 (1972-02-01), Danielson et al.
patent: 4463040 (1984-07-01), Kisler
patent: 4826703 (1989-05-01), Kisler
patent: 5049404 (1991-09-01), Kisler et al.
patent: 5190789 (1993-03-01), Finnicum

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