Systems for preventing oxygen inhibition of a light-initiated polymerization reaction in a 3D printing system using uniform planar surfaces
US11590701B2 · kind B2 · utility
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3References
17Claims
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Key dates
| Filing date | Aug 11, 2022 |
| Grant date | Feb 28, 2023 |
| Priority date | — |
| Expiry date | Aug 11, 2042 |
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 one the UV material is cured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.