Polymeric film coating method with continuous deposition pressur

Details Polymeric film coating method with continuous deposition pressur Polymeric film coating method with continuous deposition pressur

1984-04-27

1985-05-21

Childs, Sadie L.

Coating processes

Measuring, testing, or indicating

4272556, B05D 512

Patent

active

045186235

ABSTRACT:
Method and apparatus are disclosed for coating substrates with a film polymer based on p-xylylene by vapor-phase polymerization. The apparatus monitors the monomer vapor pressure after pyrolization of the cyclic di-p-xylylene dimer, compares the measured pressure to a predetermined pressure needed to effect a completed vapor-phase polymerization reaction, and adjusts the temperature of vaporization in response to variations between measured pressure and the predetermined pressure.

REFERENCES:
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patent: 3573968 (1971-04-01), Loeb et al.
patent: 3895135 (1975-07-01), Hofer
patent: 4167915 (1979-09-01), Toole et al.
patent: 4287224 (1981-09-01), Heimbach et al.
patent: 4291244 (1981-09-01), Beach et al.
patent: 4388342 (1983-06-01), Suzuki et al.
patent: 4389229 (1983-06-01), Jang et al.

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