Method and apparatus for guiding a zippered film in form, fill and seal package making machines
US4993212A · kind A · utility
53Cited by
8References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 1, 1990 |
| Grant date | Feb 19, 1991 |
| Priority date | — |
| Expiry date | Feb 1, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S493/923
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A forming shoulder for a forming and filling tube of a form, fill and seal machine has a skirt provided with a guide channel for a longitudinal zipper area of a package making material sheet running over the forming shoulder, thereby retaining the zipper area and the sheet against lateral drifting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.