Method and apparatus for producing a flat-bottom plastic bag
Abstract
Abstract A FLAT-BOTTOM PLASTIC BAG PRODUCED FROM AN EXTRUDED LENGTH OF GUSSETED THERMOPLASTIC MATERIAL AND A METHOD FOR THE PRODUCTION THEREOF INCLUDING THE STEPS OF SEALING AND SEVERING A LENGTH OF SUCH MATERIAL TO PROVIDE A CLOSED BOTTOM, RETAINING THE MAJOR PORTION OF SAID SEALED TUBE INCLUDING THE OPEN MOUTH AGAINST LONGITUDINAL MOVEMENT, GRASPING OPPOSED EDGES OF THE TOP WALL OF SAID TUBE ADJACENT THE SEALED BOTTOM, LIFTING THE GRASPED TOP WALL TO A PLANE IMMEDIATELY ABOVE THAT OF THE RE- TAINED PORTION OF THE TUBE, MOVING THE GRASPED PORTION OF THE TUBE TOWARD THE OPEN MOUTH OF THE BAG A PREDETERMINED DISTANCE TO ALSO CARRY THE BOTTOM WALL OF THE TUBE THEREWITH, AND FOLDING THE MOVED PORTION OF THE TUBE TO CREATE A FINISHED BAG HAVING A SUSTAINING FLAT-BOTTOM PORTION WHEN OPENED.
Inventors
- 👤 Gerald M Platz
- 👤 James B Honn
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |