Title:
3D PRINTING BY COMBINING AND EXTRUSION OF MULTIPLE MATERIALS
Document Type and Number:
WIPO Patent Application WO/2021/173618
Kind Code:
A3
Abstract:
Hot end assemblies are described including: i) two or more conduits for receiving materials, ii) one or more spiral flow channels connecting to said conduits, and iii) provisions for combining for the two or more received materials. Inventive embodiments are provided for production of coaxial coextrudates, mixing of material blends, and programming the internal geometry of one or more materials. Methods of use are disclosed to vary the composition of materials in the extrudate during use. Exemplary extruded products resulting from use are also provided and claimed.
Inventors:
KAZMER DAVID O (US)
HANSEN CHRISTOPHER J (US)
LAHAIE ROBERT G (US)
HANSEN CHRISTOPHER J (US)
LAHAIE ROBERT G (US)
Application Number:
PCT/US2021/019342
Publication Date:
October 07, 2021
Filing Date:
February 24, 2021
Export Citation:
Assignee:
UNIVERISTY OF MASSACHUSETTS (US)
International Classes:
B29C64/106; B33Y30/00; B29C64/209
Domestic Patent References:
| WO2019215041A1 | 2019-11-14 |
Foreign References:
| US20160297104A1 | 2016-10-13 | |||
| US10562226B1 | 2020-02-18 |
Attorney, Agent or Firm:
KRIZ, Paul P. et al. (US)
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