Use of polyvinyl alcohol having a low sodium acetate content in 3D printing process
US10953606B2 · kind B2 · utility
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1References
13Claims
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Assignee
Inventors
Key dates
| Filing date | Oct 16, 2017 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Oct 16, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB33Y80/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention is directed to a process of manufacturing a three-dimensional object by depositing and solidifying molten polyvinyl alcohol (PVOH) to form a support structure depositing and solidifying a molten thermoplastic polymer on the support structure to form a three-dimensional preform dissolving the support structure to from the three-dimensional object characterized in that the polyvinyl alcohol (PVOH) has an alkaline acetate content of less than 0.5 wght %.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.