Deeply embossed sheet product and method and apparatus for the production thereof
AssigneeJohns Manville
InventorsNathan Oser, Edmund John Niedzinski
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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.
Claims8
Apparatus for the deep embossment of single sheets of sheet material comprising a first set of rolls, each of said rolls in said first set having an embossment pattern suitable for embossment of a small scale relief pattern across the entire surface of each of said sheets, and a second set of rolls, each of the rolls in said second set having a surface pattern suitable for embossment of deep protuberances in each of said sheets in a superimposed relationship to said small scale relief pattern.
Dependencies are inferred from the claim text.