Packaging material having good moisture barrier
US5935664A · kind A · utility
14Cited by
11References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 22, 1997 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Oct 22, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31993
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Packaging material prepared from a paper or paperboard substrate which includes a layer of moisture barrier material is made resistant to loss of its moisture barrier characteristics when the packaging material is scored and bent during any converting operation by the addition of a layer of flexible primer material located between the paper or paperboard substrate and the moisture barrier layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.