Method for solid freeform fabrication
US10066119B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 8, 2016 |
| Grant date | Sep 4, 2018 |
| Priority date | — |
| Expiry date | Aug 26, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2361/16
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides methods, processes, and systems for the manufacture of three-dimensional articles made of polymers using 3D printing. A layer of prepolymer is deposited on a build plate to form a powder bed. The deposited powder bed is heated to about 50° C. to about 170° C. Then, a solution of activating agent is printed on the powder bed in a predetermined pattern, and a stimulus is applied converting the prepolymer to the final polymer. After a predetermined period of time, sequential layers are printed to provide the three-dimensional article. The three-dimensional object can be cured to produce the three-dimensional article composed of the final polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.