Polymeric film coating apparatus

Coating apparatus – Control means responsive to a randomly occurring sensed... – Temperature responsive

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Details

118667, 118690, 118692, 427 8, 4272556, B05C 1500

Patent

active

044958897

ABSTRACT:
Method and apparatus are disclosed for coating substrates with a film polymer based on p-xylylene by vapor-shaped 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.

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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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