Bag support/spreader for vertical form, fill and seal machines
US5054270A · kind A · utility
18Cited by
8References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 15, 1990 |
| Grant date | Oct 8, 1991 |
| Priority date | — |
| Expiry date | Mar 15, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B61/28
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In a form, fill and seal package or bag making machine having a vertical forming and filling tube and cross-sealing and pull down mechanism below the discharge end of the tube, a mechanism by which the filled bag is supportingly manipulated during cross-sealing to avoid bag contents weight induced stretch stress damage to the thermosealed top edge of the filled bag, and avoiding bag contents weight caused pleats and tucks in the bag body film, and redistributing the filled bag contents to avoid central sagging of the filled bag.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.