Microporous polyethylene film manufactured according to liquid-liquid phase separation and method of producing the same
US8323547B2 · kind B2 · utility
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10References
15Claims
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Assignee
Inventors
Key dates
| Filing date | May 24, 2007 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Dec 1, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed in the present invention are a microporous polyethylene film and a method of manufacture thereof. The polyethylene microporous film manufactured according to the present invention may contribute to an increased productivity of stable products as its extrusion and stretching may be done readily. And thus manufactured product may be used for battery separators and various filters owing to its high gas permeability, superior puncture strength, and small ratio of shrinkage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.