Tamper evident slider package
US6786640B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2001 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Sep 6, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B61/188
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The reclosable plastic bag is formed by opposing panels of web with four sides sealed. A zipper is sealed within the bag so that a first zipper profile is sealed to a first opposing panel and a second zipper profile is sealed to a second opposing panel. A slider engaging the zipper profiles in a closed position protrudes from an opening in at least one of the opposing panels and may be further secured in place by a label. The slider cannot be moved from the position wherein the zipper profiles are closed to the position wherein the zipper profiles are open prior to the user tearing a perforated or otherwise weakened line across the panels. When this tear is made, it is unmistakable and intuitive evidence that the bag may have been previously opened and depending upon the circumstances, possibly tampered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.