Flexible film packaging having removable strip
US7416768B2 · kind B2 · utility
37Cited by
14References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2007 |
| Grant date | Aug 26, 2008 |
| Priority date | — |
| Expiry date | Feb 2, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24314
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Slitters cut through a first layer of film immediately prior to lamination of the first layer to a second layer of film to form a strip therebetween. The degree of bonding between the first and second layers is adjusted so that the strip can be removed without harming the rest of the film or destroying any barrier properties. The lamination process can utilize extrusion lamination or adhesive lamination to provide a variety of uses: removable coupons, prize disclosures, stickers, and an adhesive re-close strip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.