Laminated packaging material and process for producing the same
US6592975B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2000 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Jun 22, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/3192
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A laminated packaging material which comprises at least three layers of polymer materials comprising a surface layer, one or more intermediate layers adjacent thereto, and another surface layer, characterized in that the intermediate layer adjacent to each surface layer contains a lubricant, at least one of the intermediate layers has gas-barrier properties, and the total amount of a lubricant in the two surface layers is smaller than that in the intermediate layer(s) adjacent thereto. In production of the packaging material, adhesion of a lubricant to a die lip is reduced. The laminated packaging material has excellent transparency and gloss.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.