Additive manufactured items with flame resistance, process for making and process for testing their flame performance
US10434705B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2015 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | Mar 26, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB33Y40/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A process for making an article by additive manufacture having resistance to dripping when burned comprising (1) depositing a multitude of thermoplastic monofilament strands using a fused deposition modeling apparatus in a pattern and (2) fusing the multitude of strands together to make an article of manufacture having voids therein; wherein the article of additive manufacture has (a) at least 50% of the monofilament strands oriented within 45 degrees of the long part of the axis; (b) the multitude of strands is greater than 10; (c) having a specific micro structure; and (d) is made from a thermoplastic polymer composition that is either the combination of a thermoplastic polymer with a flame retardant compound, a thermoplastic resin having flame resistant properties, or a combination of a thermoplastic resin having flame resistant properties with a flame retardant compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.