Structured dense fluoropolymer films and methods of making same
US12031001B2 · kind B2 · utility
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Key dates
| Filing date | Oct 5, 2018 |
| Grant date | Jul 9, 2024 |
| Priority date | — |
| Expiry date | Mar 7, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2327/18
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A structured fluoropolymer film including a plurality of structures having a height at least two times a thickness of a corresponding unstructured fluoropolymer film and at least a 20% increase in displacement induction period when compared to the corresponding unstructured fluoropolymer film when measured in a biaxial tensile curve at a temperature of about 125° C. In addition, the structured fluoropolymer film has a methane permeability of less than 500 μg*μm/cm2/min. The structured fluoropolymer film exhibits a higher resistance to strain and retain barrier properties during manufacture and/or use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.