Protective coating on substrates

Details Protective coating on substrates Protective coating on substrates

1992-09-18

1994-03-29

Pianalto, Bernard

Coating processes

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

Polymerization of coating utilizing direct application of...

2041921, 427163, 4272556, 427295, 427404, 427492, 427509, 427575, B05D 306

Patent

active

052982904

ABSTRACT:
A method and apparatus for applying a protective coating onto a substrate comprises a power supply for generating an amplitude-modulated alternating electromagnetic field in a vacuum chamber. A silicon-organic compound is supplied in a gaseous state into the vacuum chamber and is plasma polymerized onto the substrate in the chamber without powdery portions. Another process parameter for controlling coating rate is adjusted to be at a high level so that when the amplitude modulation is stopped, powdery portions do appear in the coating. Thus at high coating rates amplitude-modulation according to the invention avoids such powdery portions.

REFERENCES:
European Style Search report for Swiss 2793/91.

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