Barrier enhanced pet multilayer container
US11905363B2 · kind B2 · utility
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3References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2016 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Jun 11, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2439/70
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
This disclosure provide new multilayer polyester (particularly PET) containers that have improved gas barrier properties over conventional monolayer PET containers. In particular, a 2,5-furandicarboxylate polyester (for example, poly(ethylene furan-2,5-dicarboxylate) (PEF)) barrier layer that has superior gas barrier and mechanical properties relative to PET, that is “sandwiched” between two PET layers, has been found to achieve a significantly higher barrier against gas permeation relative to conventional monolayer PET container of the same size and shape. Associated preforms, methods, and compositions are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.