Composite fiber reinforced polyolefin
US5709933A · kind A · utility
10Cited by
30References
21Claims
0Family size
Inventor
Key dates
| Filing date | Nov 25, 1996 |
| Grant date | Jan 20, 1998 |
| Priority date | — |
| Expiry date | Nov 25, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24994
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A composite cellulose fiber reinforced polyolefin is enclosed. The polyolefin is manufactured by a process that includes preparing and mixing a blend of molten polyolefin, a coloring concentrate and a coupling agent in a kneading extruder, preheating cellulose fibers in an enclosed cram feed and mixing the blend of polyolefin, preheated cellulose fibers and ozone gas in a ozone chamber to form a polyolefin and fiber matrix. The polyolefin and fiber matrix is then fed to a twin screw extruder where it is further heated, mixed and then conveyed to a die to extrude the mixer to a desired shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.