Selective laser sintering of asymmetric particles
US11485072B2 · kind B2 · utility
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23Claims
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Key dates
| Filing date | Oct 15, 2018 |
| Grant date | Nov 1, 2022 |
| Priority date | — |
| Expiry date | Sep 2, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB33Y80/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A polymeric article of high ductility produced by rapid prototyping or selective laser sintering, and a method of making the same. The article comprises a plurality of layers of a fused thermoplastic powder, the thermoplastic powder comprising asymmetric fibrous particles having a mean length L and a mean width W, wherein L>2 W. Within each of the layers, the mean length L of the asymmetric fibrous particles is preferentially oriented in a plane parallel to the layer. The polymeric article has a stress-strain curve such that ultimate strength is reached at a strain of 10% to 20%, and breaking stress is reached at >30% strain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.