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

1977-09-13

Larson, Lowell A.

Metal deforming

By use of 'flying tool' engaging moving work

With cutting

72187, 72379, 113116Z, 425335, 428687, B21D 2208

Patent

active

040474178

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: 969460 (1910-09-01), Chartener
patent: 1571594 (1926-02-01), Lorenz
patent: 1941783 (1934-01-01), Bahr
patent: 2290608 (1942-07-01), Evans
patent: 2857825 (1958-10-01), Duncan et al.

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