B - Operations – Transporting – 26 – D
Patent
B - Operations, Transporting
26
D
164/135, 29/44
B26D 5/00 (2006.01) B26F 1/18 (2006.01) B31B 19/14 (2006.01)
Patent
CA 1170164
ABSTRACT OF THE DISCLOSURE A perforating blade for creating extremely fine perforations in plural plies of a multiply ply paper construction including a perforating edge defined by a plurality of perforating elements separated by notches. Preferably there are about 50 or more of each of the elements and the notches per lineal inch with the notches having a length along the cutting edge of no more than about 0.010 inches. A relatively small number of the perforating elements, at generally uniformly spaced loca- tions along the edge have lengths of about 0.03 inches or more with the remainder of the elements having lengths substantially less than 0.03 inches. The blade provides lines of perforation that when separated, have the ap- pearance of the edge of a so-called cut sheet.
396055
Meredith & Finlayson
The Standard Register Company
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