Polymer additive layer manufacturing
US9505171B2 · kind B2 · utility
1Cited by
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13Claims
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Key dates
| Filing date | May 9, 2012 |
| Grant date | Nov 29, 2016 |
| Priority date | — |
| Expiry date | Jun 16, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31946
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An additive layer manufacturing method for producing a shaped article, comprising providing a powdered thermoplastic polymer material (7, 8) having a re-solidification temperature at most 10% below its melting temperature on the Celsius scale, depositing successive layers of the powdered polymer material (7, 8) and selectively sintering each layer prior to deposition of the subsequent layer so as to form the article, wherein during its production the article is maintained at a temperature above the glass transition temperature and significantly below the re-solidification temperature of the polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.