Methods for preventing oxygen inhibition of a light-initiated polymerization reaction in a 3D printing system using uniform planar surfaces
US11453164B2 · kind B2 · utility
0Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2019 |
| Grant date | Sep 27, 2022 |
| Priority date | — |
| Expiry date | Feb 27, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB33Y40/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Systems and methods that prevent oxygen inhibition of a light-initiated polymerization reaction by forcing the oxygen away from the reaction surfaces. In some embodiments, oxygen is purged by bringing a planarizing surface (e.g., a thin transparent film and/or a transparent planar surface) into contact with a layer of UV curable material disposed on a workpiece and then moving the planarizing surface away from the workpiece once the UV material is cured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.