Paperboard packaging containing a PVOH barrier
US5506011A · kind A · utility
13Cited by
12References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 1, 1993 |
| Grant date | Apr 9, 1996 |
| Priority date | — |
| Expiry date | Dec 1, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Paperboard packaging for non-refrigerated liquid products and for dry products contains a buried polyvinyl alcohol copolymer (PVOH) barrier layer which has a low oxygen permeability particularly at low relative humidity, and outer heat-sealable surfaces which provide good resistance to moisture penetration and a means for fabricating the packaging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.