Adhesive closure for flexible bag
US5527112A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1994 |
| Grant date | Jun 18, 1996 |
| Priority date | — |
| Expiry date | Apr 15, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2401/55
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A resealable flexible thermoplastic bag including a front wall and a back wall, said walls being joined along the major portions of their opposite longitudinal edges and bottom; an open mouth adjacent to the top edge of said bag; a closure near the open mouth of said bag including an adhesive strip affixed to a first inner surface of one of a front wall or rear wall of a bag at a preselected distance from the opening of the bag; and a first roughened surface strip affixed to a second inner surface of one of a front wall or rear wall of a bag at a preselected distance from the opening of the bag; said roughened surface of said bag being pressable against and into said adhesive strip on said first inner surface, whereby a seal is formed by contacting said adhesive strip with said roughened surface of said second inner surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.