Apparatus and method for perforating roofing sheet material

Details Apparatus and method for perforating roofing sheet material Apparatus and method for perforating roofing sheet material

B - Operations, Transporting

26

F

164/101, 164/29

B26F 1/02 (2006.01)

Patent

CA 1037376

Abstract of the Disclosure The apparatus of the present invention comprises at least one hole-punching device operated by a pneumatic cylinder for driving a punch rod through the peripheral surface and radially to the center of a roll of roofing sheet material. The method of the invention provides for the steps of preparing the sheet roofing material, winding the sheet into a roll, and punching a plurality of perforation holes in the roll from the surface to the center thereof.

243741

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