Continuous fiber reinforced composites and methods, apparatuses, and compositions for making the same
US6899777B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 2, 2002 |
| Grant date | May 31, 2005 |
| Priority date | — |
| Expiry date | Apr 8, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2123
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for continuous composite coextrusion comprising: (a) forming first a material-laden composition comprising a thermoplastic polymer and at least about 40 volume % of a ceramic or metallic particulate in a manner such that the composition has a substantially cylindrical geometry and thus can be used as a substantially cylindrical feed rod; (b) forming a hole down the symmetrical axis of the feed rod; (c) inserting the start of a continuous spool of ceramic fiber, metal fiber or carbon fiber through the hole in the feed rod; (d) extruding the feed rod and spool simultaneously to form a continuous filament consisting of a green matrix material completely surrounding a dense fiber reinforcement and said filament having an average diameter that is less than the average diameter of the feed rod; and (e) depositing the continuous filament into a desired architecture which preferably is determined from specific loading conditions of the desired object and CAD design of the object to provide a green fiber reinforced composite object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.