Method of forming polymeric bags
US9487334B2 · kind B2 · utility
18Cited by
25References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2015 |
| Grant date | Nov 8, 2016 |
| Priority date | — |
| Expiry date | Mar 17, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2160/106
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to improvements for the manufacturing of a wave-cut bag, more specifically a wave-cut bag with improved tie-flaps. Disclosed is a process for intermittently incrementally stretching and imparting a rib-like pattern to a collapsed tube of a blown film extrusion process. The incrementally stretched collapsed tube is particularly well suited for constructing wave-cut trash bags with a rib pattern on the tie-flaps of the trash bags. Further disclosed is a wave-cut trash bag with a rib pattern on its tie-flaps and surrounding area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.