Three-dimensional printed composites using engineered powders
US11969938B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2020 |
| Grant date | Apr 30, 2024 |
| Priority date | — |
| Expiry date | May 8, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C49/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A three-dimensional object comprises stacked substrate layers infiltrated by a hardened material comprising engineered powder that is transformed into a substance that flows and subsequently hardens into the hardened material in a spatial pattern that infiltrates positive regions, and does not infiltrate negative regions, in the substrate layers. The powder may be emulsion aggregation powder, chemically-produced toner powder, or a combination. It may be a thermoplastic or thermosettable polymer and may include nylon, elastomers, polyolefins, polyethylene, polyether ether ketone, polyimide, polyetherimide, polyphenylene sulfide, polystyrene, polypropylene, polymethyl methacrylate, and polyaryletherketone, or a combination. The powder particles may have a pre-specified controlled shape and/or a non-homogenous composition. Surface treatments and/or additives may be used to control powder flow and charge distribution. Each substrate layer may be a sheet-like structure comprising fibers held together by binder. The binder may include sodium silicate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.