Device for lengthwise slitting a web and method relating thereto
US6092452A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 29, 1998 |
| Grant date | Jul 25, 2000 |
| Priority date | — |
| Expiry date | Jul 29, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/9403
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method is described for changing between jobs in a device for slitting a web (N) into a plurality of lengthwise strips (L1, L3, L5, L1', L3', L5') with two series of slitting tools (25, 25B). At the moment of the job changeover, the tools of a first series are moved from a slitting position to an inactive position and the tools of the second series are moved from an inactive position to a slitting position. The passage from one position to the other is delayed for one of the tools of each series in order to generate two slit lines (L3', L5) extending into the job changeover zone (CA), and these lines are subsequently joined up by a transverse slit (L9). (FIG. 6)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.