Stretch stress relief for bag thermo-cross-seals in vertical form, fill and seal machines
US5014499A · kind A · utility
19Cited by
10References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 15, 1990 |
| Grant date | May 14, 1991 |
| Priority date | — |
| Expiry date | Mar 15, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B61/28
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A support is provided for filled bags in a form, fill and seal package or bag making machine to avoid stretch stress damage to the thermosealed top edge of the filled bag during the cross-sealing and pull-down action of cross-sealing and pull-down bars functioning below the lower or discharge end of the forming and filling tube of the associated form, fill and seal machine. The supoprt may comprise a supporting constant force spring biased finger or a platform plate similarly supported.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.