Continuous three dimensional fabrication from immiscible liquids
US10259171B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2015 |
| Grant date | Apr 16, 2019 |
| Priority date | — |
| Expiry date | Nov 5, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C64/188
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of forming a three-dimensional object is carried out by: providing a carrier and a pool of immiscible liquid, the pool having a liquid build surface, the carrier and the liquid build surface defining a build region therebetween; filling the build region with a polymerizable liquid, wherein the immiscible liquid is immiscible with the polymerizable liquid (in some embodiments wherein the immiscible liquid has a density greater than the polymerizable liquid); irradiating the build region through at least a portion of the pool of immiscible liquid to form a solid polymer from the polymerizable liquid and advancing the carrier away from the liquid build surface to form the three-dimensional object comprised of the solid polymer from the polymerizable liquid. Optionally, but in some embodiments preferably, the method is carried out while also continuously maintaining a gradient of polymerization zone between the liquid build surface and the solid polymer and in contact with each thereof, the gradient of polymerization zone comprising the polymerizable liquid in partially cured form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.