Multilayer, high barrier laminate
US5830545A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 29, 1996 |
| Grant date | Nov 3, 1998 |
| Priority date | — |
| Expiry date | Apr 29, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31928
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A high barrier, multilayer laminate is disclosed that is suitable for forming packages that contain oxygen sensitive products. The laminate material comprises a first layer including biaxially oriented polyethylene terephthalate, a second layer of a high barrier oxide material disposed exterior to the first layer, and a third layer of an adhesive material disposed interior to the first layer and joining the first layer to a fourth coextruded multilayer material. The fourth coextruded multilayer material comprises from exterior to interior: i) a first layer of a polyethylene material, ii) an oxygen scavenging layer comprising a polyethylene and an oxygen scavenger material, wherein the oxygen scavenging layer is disposed interior to the first layer of the polyethylene material, and iii) a second layer of the polyethylene material disposed interior to the oxygen scavenging layer. A further laminate structure suitable for forming a package containing an oxygen sensitive product is also disclosed. The further laminate comprises a first layer comprising biaxially oriented polyethylene terephthalate, biaxially oriented polyamide, or biaxially oriented polypropylene, a second layer of a h…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.