Protective strip for Z-fold bag closure
US4410130A · kind A · utility
69Cited by
7References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 30, 1981 |
| Grant date | Oct 18, 1983 |
| Priority date | — |
| Expiry date | Dec 30, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D33/20
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An improved Z-fold closure for flexible bags such as thermoplastic bags comprising polyethylene film comprising a pressure sensitive adhesive strip and a protective strip having one or more ribs of sufficient stiffness and dimension so that the strip of adhesive is substantially contacted by only the top portion(s) of the rib(s) when the bag closure is in a stored or "z" fold position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.