Multizone electroblowing process
US9090996B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 15, 2012 |
| Grant date | Jul 28, 2015 |
| Priority date | — |
| Expiry date | Oct 8, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/9165
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Methods and apparatuses are provided for producing fibers via electroblowing. In an embodiment of the present invention, a polymer stream, formed from a spinning nozzle, passes through a first temperature zone for a first residence time, and subsequently passes through a second temperature zone for a second residence time, where the second zone has a higher average temperature than the first zone. In an embodiment of an apparatus of the present invention, the apparatus has a region between the spinning nozzle outlet and collector that includes at least two zones through which a polymer stream passes, where the second zone has a higher average temperature than the first zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.