| 242 / | HD | WINDING, TENSIONING, OR GUIDING |
| 520 | DF | CONVOLUTE WINDING OF MATERIAL {17} |
| 522 | DF | .~ With cutting, perforating, or notching {4} |
| 525 | DF | .~.~ Longitudinal cutting {5} |
| 525.6 | ![]() | .~.~.~ By rotary slitter disk {1} |
| 525.7 | DF | .~.~.~.~> With reactive material support surface |