MDO multilayer polyethylene film
US7794848B2 · kind B2 · utility
13Cited by
10References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 25, 2007 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | May 18, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31909
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A multilayer film and a method of making the film are disclosed. In the method a multilayer film is post-oriented uniaxially in the machine direction resulting in a film that has a water vapor transmission rate of less than 2.5 g-mil/m2-day and an oxygen transmission rate of less than 1.5 cm2-mil/m2-day. The film of this invention is ideal for applications requiring low water vapor and oxygen transmission rates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.