Method for improving insulation in hollow metal volumes

Details Method for improving insulation in hollow metal volumes Method for improving insulation in hollow metal volumes

2006-02-07

2006-02-07

McDowell, Suzanne E. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

Reexamination Certificate

active

06994822

ABSTRACT:
A non-planar wall of a refrigerated container is thermally insulated by covering the wall with an air tight liner, drawing a vacuum on the internal volume of the liner and then sealing the compartment to maintain the vacuum. The liner is installed by first constructing a thermoplastic liner with a portion which approximates the non-planar shape of the wall, and then pressurizing the liner and applying heat thereto so as to cause it to thereby partially liquify, and expand into any openings that would otherwise cause leakage and to thereby adhere to the metal and form a monolithic air tight structure.

REFERENCES:
patent: 3477506 (1969-11-01), Malone
patent: 3827130 (1974-08-01), Baumann
patent: 4901676 (1990-02-01), Nelson
patent: 4974551 (1990-12-01), Nelson

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