Film cutter
US7849770B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2005 |
| Grant date | Dec 14, 2010 |
| Priority date | — |
| Expiry date | Dec 18, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/768
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A cutting apparatus cuts shrink wrap film residing in a roll. The apparatus includes a first roller pair receiving the film from the roll and carrying the film away from the roll; and without the need for a second roller pair to receive the cut sheet of film. Film snap-back is prevented by cutting the film between a shear deck with teeth and a rotating blade with teeth intermeshing with the teeth of the shear deck. A method for cutting a sheet of shrink wrap film, includes: feeding the film into a first roller pair; and cutting the film between the first roller pair and the second roller pair using a rotating knife with a number of teeth intermeshing with a shear bar with teeth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.