Low scalping laminate for packaging material
US6720046B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2001 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Oct 16, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/3175
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A low scalping laminate material for a container for food packaging includes a core layer of paper or paperboard, a polymeric coating applied to one side of the core layer and a combination of layers disposed on an opposing side of the core layer. The combination of layers includes a first barrier layer disposed adjacent the core layer, a first tie layer adjacent the first barrier layer, a second barrier layer adjacent the first tie layer, a second tie layer adjacent the second barrier layer and a second polymeric coating adjacent the second tie layer. The second polymeric coating is configured for a food contacting surface. The first and second barrier layers are formed from an admixture of an aromatic polyamide resin and polyamide 6, and the first and second tie layers are formed from one of a modified polyethylene and a polyolefin. A carton formed from the low scalping laminate is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.