Confined crystallization multilayer films
US10549504B2 · kind B2 · utility
2Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2009 |
| Grant date | Feb 4, 2020 |
| Priority date | — |
| Expiry date | Sep 30, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A multilayer film includes an extruded first polymer layer confined between extruded second polymer layers. The first polymer layer includes a high aspect ratio crystalline lamellae. The multilayer film is substantially impermeable to gas diffusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.