Continuous liquid interphase printing
US10144181B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2015 |
| Grant date | Dec 4, 2018 |
| Priority date | — |
| Expiry date | Oct 8, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/49016
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of forming a three-dimensional object, comprises providing a carrier and an optically transparent member having a build surface, the carrier and the build surface defining a build region therebetween; filling the build region with a polymerizable liquid; irradiating the build region through the optically transparent member to form a solid polymer from the polymerizable liquid while concurrently advancing the carrier away from the build surface to form the three-dimensional object from the solid polymer, while also concurrently: (i) continuously maintaining a dead zone of polymerizable liquid in contact with the build surface, and (ii) continuously maintaining a gradient of polymerization zone between the dead zone and the solid polymer and in contact with each thereof, the gradient of polymerization zone comprising the polymerizable liquid in partially cured form. Apparatus for carrying out the method is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.