Easy open bag structure
US4846585A · kind A · utility
76Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1988 |
| Grant date | Jul 11, 1989 |
| Priority date | — |
| Expiry date | Jan 29, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D33/2533
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A reclosable plastic film bag and the method of making the same with the bag having opposed side walls, pressure closable separable opposed rib and groove fastener elements on confronting faces of the top for closing the bag, plastic film above the fastener elements hermetically closing the bag top, lines of tear perforation through the film to tear off the top and perforation sealing strips attached to the surface of the film preventing the passage of air through the perforations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.