Method of manufacturing foam insulated tank

Details Method of manufacturing foam insulated tank Method of manufacturing foam insulated tank

1985-02-25

1986-12-30

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 465, 264 466, 264 469, 264314, B28B 730, B29C 3910, B29C 3926, B29C 6722

Patent

active

046327924

ABSTRACT:
A method of manufacturing a foam insulated water heater of the type having an inner tank, a layer of insulating foam material surrounding the inner tank and an outer protective shell includes, in one embodiment, the steps of (1) forming a flexible, expandable bag in a configuration which may be placed between the tank and shell, (2) attaching the flexible bag between the tank and shell, (3) filling the bag with a foam material which expands, and (4) continuing to fill the bag so that foam material expands through relief openings in the bag to fill the remainder of the space between the tank and the shell.

REFERENCES:
patent: 3222843 (1965-12-01), Schneider
patent: 3310615 (1967-03-01), Bender
patent: 3313020 (1967-04-01), Krauskopf
patent: 3357142 (1967-12-01), Furrer et al.
patent: 4372028 (1983-02-01), Clark et al.
patent: 4447377 (1984-05-01), Denton
patent: 4477399 (1984-10-01), Tilton

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