Easy opening plastic bag pack of the star-seal type
US5941393A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 23, 1998 |
| Grant date | Aug 24, 1999 |
| Priority date | — |
| Expiry date | Jul 23, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B43/14
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A pack of easy opening handleless or T-shirt type plastic bags for packaging grocery produce or the like and for being suspended from a rack for being serially opened and removed from the rack. Each type of bag includes integrally formed front and rear walls and gusseted side walls which extend inwardly towards each other and which terminate proximate each other. The walls have top portions defining an open mouth. Each T-shirt type bag includes laterally-spaced handles extending upwardly from the mouth portion on each side of the bag. The front and rear walls and gusseted side walls of each bag are folded onto each other along a longitudinal axis of the bag to define eight superimposed layers. A seal of the star seal type secures the bottoms of the eight layers together to close each bag bottom. Superimposed detachable tabs extend upwardly from the eight wall layers at the top of each bag. Each tab includes an aperture for mounting on a tab-retaining device of a rack. At least the front two tabs in each handleless bag and the front four tabs in each T-shirt type bag are front-side-free for easy opening. One form of mounting tabs for either type of bag provides tabs which are detach…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.