Releasable closure for bags and containers
US4543139A · kind A · utility
46Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1984 |
| Grant date | Sep 24, 1985 |
| Priority date | — |
| Expiry date | Sep 17, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2848
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Adjoining strata of pressure-sensitive adhesive are transferred to a package substrate. The two outermost adhesive strata have different adhesion to the substrate. The adhesive strata are used as a reclosable fastener and are intermixed in the course of reclosing and reopening the package, the action being such as to advantageously compensate for contamination occurring at the reseal interface while maintaining the status quo at the permanent interface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.