Method of applying hydrocarbon barrier to a plastic fuel tank

Details Method of applying hydrocarbon barrier to a plastic fuel tank Method of applying hydrocarbon barrier to a plastic fuel tank

2007-07-03

2007-07-03

Moore, Karla (Department: 1763)

Coating apparatus

Gas or vapor deposition

Multizone chamber

C118S254000, C118S306000, C118S731000, C198S404000, C198S406000, C198S408000

Reexamination Certificate

active

10364085

ABSTRACT:
The subject invention relates to a method of applying the hydrocarbon barrier inside plastic fuel tanks. The plastic fuel tanks are supported on a carrier in an upright position for movement in a loop through inverted positions. While upright, hot and dry air treats the inside of the plastic fuel tanks followed by injecting SO3inside the plastic fuel tanks through the nozzles. The SO3is extracted from the plastic fuel tanks followed by injecting ammonia into the tanks through a second nozzle. After extracting ammonia from the plastic fuel tanks, the tanks are inverted and drained followed by a rinsing with a high pressured water and drying with hot air.

REFERENCES:
patent: 2879882 (1959-03-01), Whelan
patent: 3983597 (1976-10-01), Neumann
patent: 4319543 (1982-03-01), Shank
patent: 5849366 (1998-12-01), Plester
patent: 6209705 (2001-04-01), Drewitz
patent: 6758910 (2004-07-01), Schmoyer
patent: 2004/0081756 (2004-04-01), Coots et al.

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