Apparatus for placing a web of film under tension
US4829746A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1987 |
| Grant date | May 16, 1989 |
| Priority date | — |
| Expiry date | Jul 24, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B9/20
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An apparatus for placing a folded web of film under tension comprising at least one pair of rollers, a first side of the folded web of film being fed between the pair of rollers, the pair of rollers being mounted out of parallel to the first side of the folded web of film and pulling the first side of the folded web of film in a first direction, and a member for preventing a second side of the folded web of film from moving in the first direction. Preferably, the member biases the second side of the folded web of film in a second direction opposite the first direction. A method for placing a folded web of film under tension is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.