Perforating machine for forming side flanged openings

Details Perforating machine for forming side flanged openings Perforating machine for forming side flanged openings

B - Operations, Transporting

21

D

164/117

B21D 13/04 (2006.01) B21D 28/36 (2006.01)

Patent

CA 1038281

S P E C I F I C A T I O N ABSTRACT OF THE DISCLOSURE A machine for manufacturing corrugated mat- erial having successive sets of corrugation forming roll means preceded or succeeded by rotating punch and die roll means cooperatively correlated with the corrugated roll means in a manner for forming openings in material in positions such that the openings will have side flanges extending outwardly from the crests of the finished cor- rugated material, the punch roll being formed of discs, the discs being of a sufficient width as to need no spacers, the die roll means being cylindrical and formed of a mater- ial indentable by rotation of said discs thereagainst to form a female die roll. - 1 -

236699

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