Pressure sensitive adhesive closure for bags incorporating an adhesive cuff-lock design
US3942713A · kind A · utility
51Cited by
8References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1974 |
| Grant date | Mar 9, 1976 |
| Priority date | — |
| Expiry date | Feb 25, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D33/20
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A thermoplastic bag comprising a front wall and a rear wall. The upper edge of said rear wall is turned inwardly and the resultant downwardly facing pouch is sealed along its edges to the upper edges of the rear bag walls. The upper portion of the front bag wall has an adhesive stripe extending across the width thereof. The adhesive stripe is protected from direct contact with the pouch on the opposite wall, until it is desired to close and seal the bag, by means of a strip of release paper covering the adhesive or, alternatively, by folding a portion of the front bag wall back upon itself to cover the adhesive stripe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.