Coating apparatus – With vacuum or fluid pressure chamber
Patent
1975-04-07
1976-12-21
Kaplan, Morris
Coating apparatus
With vacuum or fluid pressure chamber
118 9, 118 49, 118603, 427237, C23C 1308
Patent
active
039981800
ABSTRACT:
An apparatus and process are provided for the safe, economic and pollution-free exposure of articles to reactive gaseous fluids to alter their surface characteristics. The articles are exposed to one or more fluids which are transferred back and forth from a reaction chamber to a holding chamber. As the fluids are transferred they pass through a trap designed to remove reaction-by-products without affecting valuable reactant fluids. Since the fluids can be transferred under vacuum and the overall reaction can take place at relatively low temperatures, the process provides a convenient and safe method for handling reactive fluids. The process is particularly useful for the halogenation, for example fluorination, of a variety of articles, such as plastic containers, aerosol bottles and films to improve their barrier resistance to solvents and gases.
REFERENCES:
patent: 1937256 (1933-11-01), Taylor
patent: 2222630 (1940-11-01), Pickford et al.
patent: 2749255 (1956-06-01), Nack et al.
patent: 2787688 (1957-04-01), Hall et al.
patent: 3233579 (1966-02-01), Arvidsson
patent: 3801360 (1974-04-01), Dahlgren
Gortsema Frank P.
Hawkins Albert W.
Hedaya Eddie
O'Hara Matthew J.
Kaplan Morris
Moran William Raymond
Union Carbide Corporation
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