Long-fiber reinforced polyolefin plastic structure and shaped bodies formed therefrom
US6794032B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2002 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Oct 31, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2964
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a long-fiber-reinforced polyolefin structure with a length of ≧3 mm, comprising from 0.1 to 90% by weight of at least one polyolefin, from 0.1 to 50% by weight of at least one polyamide, from 0.1 to 15% by weight of at least one modified polyolefin, from 5.0 to 75% by weight of at least one reinforcing fiber, from 0.1 to 5.0% by weight of at least one additive. The present invention further relates to a process for producing a long-fiber-reinforced polyolefin structure, where fiber bundles are passed through a flat-film die which has been charged with a melt made from polyolefin, polyamide, modified polyolefin, and dye and/or pigment, the immersed fiber bundles are passed through a shaping die, the fiber bundles are cooled, and the fiber bundles are chopped to the lengths of the structure transversely to the direction of running. Finally, the present invention relates to a molded article made from a long-fiber-reinforced polyolefin structure, produced by injection molding, extrusion, blow molding, or compression with plastification. The present invention also relates to the use of a long-fiber-reinforced polyolefin structure for producing molding…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.