Three-dimensional printing with build plates having reduced pressure and/or channels for increased fluid flow
US11014299B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2017 |
| Grant date | May 25, 2021 |
| Priority date | — |
| Expiry date | Dec 17, 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, wherein the method includes providing a carrier and an optically transparent member having a build surface, said carrier and said build surface defining a build region therebetween; 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, 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, said optically transparent member comprising a build plate for a three-dimensional printer comprising: an optically transparent first channel layer; an optically transparent, gas permeable second channel layer on the first channel layer; and a flexible, optically transparent, gas-permeable sheet having an upper and lower surface, the sheet upper surface comprising a build surface for forming a three-dimensional object, the sheet lower surface being positioned on the second channel layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.