Method of a coating on the outside surface of a metal pipe

Details Method of a coating on the outside surface of a metal pipe Method of a coating on the outside surface of a metal pipe

1978-05-15

1980-01-08

Beck, Shrive P.

Coating processes

Solid particles or fibers applied

Uniting particles to form continuous coating with...

118309, 118DIG11, 427318, B05D 302

Patent

active

041827821

ABSTRACT:
A method of coating metal pipes externally with a uniform thin coating of a synthetic resin, such as a polyamide, polyethylene or polyvinyl chloride, which comprises heating the pipe to a temperature to enable a frit of discrete particles to bond to a pipe in a chamber through which the pipe is passed and which is charged with a mixture of a gas and the particles. Thereafter the frit is smoothed by heating the pipe to a higher temperature as it leaves the chamber to cause the particles to coalesce.

REFERENCES:
patent: 3161530 (1964-12-01), Strobel
patent: 3197324 (1965-07-01), Brooks
patent: 3508946 (1970-04-01), Plueddemann
patent: 3560239 (1971-02-01), Facer et al.
patent: 3573953 (1971-04-01), Laulan
patent: 3589333 (1971-06-01), Quackenbush
patent: 3922384 (1975-11-01), Tadewald
patent: 3946125 (1976-03-01), Scheiber
patent: 3974306 (1976-08-01), Inamura et al.

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