Polyethylene films having high resistance to deformation or elgonation
US8802802B2 · kind B2 · utility
2Cited by
19References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 16, 2013 |
| Grant date | Aug 12, 2014 |
| Priority date | — |
| Expiry date | Apr 16, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a method for producing polyethylene films which have high resistance to deformation or elongation under loading in tension. The method comprises orienting in the machine direction (MD) a high density polyethylene film at a drawdown ratio effective to give the film an MD tensile strength at yield greater than or equal to 50,000 psi, wherein the HDPE has a density greater than 0.940 g/cm3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.