Preparation of multilayer polyethylene thin films
US8034461B2 · kind B2 · utility
1Cited by
16References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2005 |
| Grant date | Oct 11, 2011 |
| Priority date | — |
| Expiry date | Apr 9, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for making multilayer thin films is disclosed. The method of comprises orienting a thick multilayer film in the machine direction at a drawdown ratio effective to produce a multilayer thin film. The thick multilayer film has a thickness within the range of 1 mil to 5 mils and comprises at least one layer of a linear low density polyethylene (LLDPE) and at least one layer of a high density polyethylene (HDPE) or a medium density polyethylene (MDPE).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.