3-D printed semi-crystalline and amorphous polymer articles
US12215220B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2019 |
| Grant date | Feb 4, 2025 |
| Priority date | — |
| Expiry date | Oct 3, 2039 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F6/82
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to 3D printed parts made with thermoplastic polymers having a low stiffening temperature. 3D printed parts of the invention have very good Z layer adhesion, have a high elongation at break in the Z direction, preferably of more than 50 percent, and have at least an 80 percent ratio of Z to XY stress at yield or at break. The resulting part may be nearly isotropic—having similar mechanical properties in the XY and Z print directions. The excellent layer adhesion makes the resultant printed part more robust—able to withstand many cycles of use. Certain polymers of the invention produce printed parts that have a very low haze, and are nearly transparent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.