Three-dimensional printing methods for reducing bubbles by de-gassing through build plate
US10821667B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2017 |
| Grant date | Nov 3, 2020 |
| Priority date | — |
| Expiry date | Jun 30, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2995/006
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and an apparatus of forming a three-dimensional object includes providing a carrier and an optically transparent member having a build surface. The carrier and the build surface define a build region therebetween. The method further includes filling said build region with a polymerizable liquid; continuously or intermittently irradiating said build region with light through said optically transparent member to form a solid polymer from said polymerizable liquid; applying a reduced pressure and/or polymer inhibitor-enriched gas to the polymerizable liquid through the optically transparent member to thereby reduce a gas content of the polymerizable liquid; and continuously or intermittently advancing (e.g., sequentially or concurrently with said irradiating step) said carrier away from said build surface to form said three-dimensional object from said solid polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.