Plastic transport system
US5722218A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 16, 1996 |
| Grant date | Mar 3, 1998 |
| Priority date | — |
| Expiry date | Aug 16, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B43/123
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A conveyor system for gripping and transporting plastic film is disclosed in the environment of a packaging machine and process for loading bags of a novel web of side connected bags. The web is fed through a bagger section by a pair of grooved main transport belts and a pair of lip transport belts each disposed in the groove of the associated main belt to trap bag lips in the grooves. Adjustable belt spreaders space reaches of the transport belts as they move through a load station whereby to sequentially open the bags into rectangular configurations. Alternate conveyor embodiments are also disclosed. The belts of each embodiment are constructed such that when force is applied to a gripped plastic film coaction of the film and belts causes the belt gripping of the film to tighten.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.