Deeply embossed sheet product and method and apparatus for the p

Details Deeply embossed sheet product and method and apparatus for the p Deeply embossed sheet product and method and apparatus for the p

1976-10-26

1978-06-06

Larson, Lowell A.

Metal deforming

Process

Deforming sheet metal

72187, 428174, 428687, B21D 1304

Patent

active

040928420

ABSTRACT:
A method of deep embossing of sheet material, generally metal, is disclosed. A small scale relief pattern is first embossed across the entire sheet and thereafter a deep embossment of spaced-apart protuberances is imparted to the sheet. Both patterns in combination produce a sheet useful for reflective thermal insulation without the risk of significantly puncturing the sheet.

REFERENCES:
patent: 1517633 (1924-12-01), Junkers
patent: 1826344 (1931-10-01), Dalgliesh
patent: 2288170 (1942-06-01), Moeller
patent: 2290608 (1942-07-01), Evans
patent: 2644778 (1953-07-01), Russell
patent: 3144974 (1964-08-01), Eichner et al.
patent: 3575781 (1971-04-01), Pezely

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