Paperboard laminate
US5059459A · kind A · utility
26Cited by
5References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 17, 1989 |
| Grant date | Oct 22, 1991 |
| Priority date | — |
| Expiry date | May 17, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A non-foil paperboard laminate having improved resistance to the migration of essential oils, flavors and Vitamins in liquid packaging and improved oxygen barrier characteristics for both liquid and dry packaging comprises paperboard sandwiched between two layers of a heat-sealable, low density polyethylene polymer and including a symmetrical five component barrier layer coextruded onto the surface of one of the low density polyethylene layers. The barrier layer comprises low density polyethylene/adhesive tie layer/ethylene vinyl alcohol copolymer/adhesive tie layer/low density polyethylene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.