Flexible easy-opening pack
Abstract
Abstract A flexible liquid impermeable package is in the form of a tubular bag and has a tear-strip for opening the bag. The bag is made of monoaxially or biaxially stretched polyolefin film, and has opposed transverse welds and a longitudinal weld which is parallel to a stretched orientation of the film for sealing the bag. The tear strip is heat-welded to an outer surface of a wall of the bag, disposed away from and parallel to the longitudinal weld. The tear strip is made of polyolefin, and has a thickness greater than the thickness of the polyolefin film of the bag. The invention relates to a flexible liquid-tight bag intended for a liquid food product or a food product containing a solid product immersed in a liquid, comprising a tear strip for easy opening of the bag with no spurting of liquid. The tear strip is applied by heat sealing to the outer surface of the bag in the stretching direction of the constituent film of the bag.
Inventors
- 👤 Giancarlo Montesissa
- 👤 Giovanni Prella
Bibliographic Details
Claims Analysis
Total Claims: 10References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-11-21 | 1998-05-23 | 1998-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-21 | 2002-05-23 | 2002-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-21 | 2006-05-23 | 2006-11-22 | $7700.00 | Window Closed / Lapsed |