Method of manufacturing foam insulated tank

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

B - Operations, Transporting

65

D

154/144, 26/145,

B65D 25/00 (2006.01) B29C 44/18 (2006.01) B29C 44/38 (2006.01)

Patent

CA 1241587

ABSTRACT OF THE DISCLOSURE 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.

488933

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