Multi-ply heat-insulating material

Details Multi-ply heat-insulating material Multi-ply heat-insulating material

1981-10-27

1983-08-30

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

156210, 428166, 428172, 428178, 428184, 428186, 4283044, 428332, 428920, B32B 328, B32B 312, B32B 1512

Patent

active

044017065

ABSTRACT:
This heat-insulating material comprises at least one layer of plain paper or plastic web provided on one face with a thin metal film having a thickness of 1 to 20 microns, and at least one layer of corrugated paper or pasteboard glued only along the crests of its waves to the metal coating of the first layer, the side of the corrugated web which faces the plain web layer being likewise coated with a metal film. Thus, substantially the entire area of the two metal layers are in constant mutual contact with the cavities formed by the waves of the corrugated web, which have a thickness of at least 1 to 1.5 mm. This feature and the specific arrangement of the layers are such that the metallized surfaces thereof face the direction in which the heat-flow is to be insulated, thus affording a particularly high heat-insulating efficiency.

REFERENCES:
patent: 798804 (1905-09-01), Kunz
patent: 2221309 (1940-11-01), Gazelle
patent: 3619340 (1971-11-01), Jones
patent: 3840425 (1974-10-01), Finelli et al.
patent: 3940811 (1976-03-01), Tomikawa et al.
patent: 4313993 (1982-02-01), McGlory

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