Evacuated insulation and a method of manufacturing same

Details Evacuated insulation and a method of manufacturing same Evacuated insulation and a method of manufacturing same

1987-12-23

1989-06-06

Thomas, Alexander S.

Stock material or miscellaneous articles

Sheet including cover or casing

Filled with gas other than air; or under vacuum

428 72, 428 76, 428186, B32B 312

Patent

active

048373885

ABSTRACT:
An article of insulation and its method of manufacture, in which a planar sheet member has a plurality of score lines (24--24) made in the exterior surface thereof, and is then folded along the score lines (24--24) and then sealed to form an enclosed, airtight volume. Positioned between the upper and lower portions (12,14) of the sheet member are a plurality of thin, flexible, resilient, spaced interior elements (36--36). The combination is deformed to form corrugated surfaces and then expanded so that the upper and lower portions are spaced apart and the interior elements are again substantially flat. The space between the upper and lower elements is evacuated.

REFERENCES:
patent: 3936553 (1976-02-01), Rowe
patent: 4401706 (1983-08-01), Sovilla
patent: 4579756 (1986-04-01), Edgel

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