Tear resistant heat sealable packaging structure
US7144635B2 · kind B2 · utility
48Cited by
18References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2001 |
| Grant date | Dec 5, 2006 |
| Priority date | — |
| Expiry date | Sep 22, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31993
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A tear resistant laminated comprised of a paper or paperboard substrate, and adhesive layer, a tear resistant layer secured to the adhesive layer, and a heat-sealable material. The tear resistant material has a a tear strength as measured by the Elmendorf tear propagation test of at least about 300 grams of force in both machine and cross direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.