High barrier coated paperboard
US11390438B2 · kind B2 · utility
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12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 21, 2018 |
| Grant date | Jul 19, 2022 |
| Priority date | — |
| Expiry date | Mar 6, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2553/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Paperboard structures having extruded barrier layers are provided. Using layer multiplication extrusion it has been found that nylon barrier layer properties can be improved. The further inclusion of metallocene PE in the layers being layer multiplied through extrusion coating provide additional improvements in barrier properties for the paperboard substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.