Method and apparatus for applying foam insulation to pipe

Details Method and apparatus for applying foam insulation to pipe Method and apparatus for applying foam insulation to pipe

1976-08-27

1978-06-13

Whitby, Edward G.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

138144, 138149, 156195, 156250, 214339, 214DIG4, 264 463, 264 469, 428 36, 428160, 428313, 428425, 427258, 427264, 427335, B32B 518

Patent

active

040947157

ABSTRACT:
A method of applying foamed insulation to pipe is contemplated by the present invention. The pipe is moved longitudinally while being rotated about its longitudinal axis. A sprayable, foamable liquid is directed onto the surface of the pipe from a stationary location and is allowed to partially rise before a protective outer jacket is wrapped around the rising foam. The wrapping step includes application of sufficient pressure to the foam to increase the final density thereof, at the outer surface, by from 10% to 25% above the density if the foam was allowed to rise uninhibited.

REFERENCES:
patent: 2941570 (1960-06-01), Plym
patent: 3118800 (1964-01-01), Snelling
patent: 3172591 (1965-03-01), Norton
patent: 3371806 (1968-03-01), Anderson
patent: 3480493 (1969-11-01), Bauer et al.
patent: 3743124 (1973-07-01), Jarvis
patent: 3877136 (1975-04-01), Groh et al.
patent: 3979818 (1976-09-01), Groh et al.

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