Method and apparatus for stretch wrapping a load using a film web reversing technique
US5155970A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 17, 1991 |
| Grant date | Oct 20, 1992 |
| Priority date | — |
| Expiry date | May 17, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B11/045
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for stretch wrapping a load with a film web having a tacky surface and a non-tacky surface. The film web is wrapped around the load in a forward direction with the tacky surface facing away from the load. The orientation of the film web is reversed by inserting a metal rod in the path of the film web and reversing the wrapping direction. The film web wraps around the metal rod, thereby causing the film web to fold back on itself. The film web is wrapped around the load in the reverse direction to cover the film web which was wrapped in the forward direction, with the tacky side facing the film web which was wrapped in the forward direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.