Apparatus for improving mechanical characteristics of nonwoven materials
US7244116B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2002 |
| Grant date | Jul 17, 2007 |
| Priority date | — |
| Expiry date | Oct 23, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/614
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for forming a nonwoven material from a liquefied polymer, the apparatus comprising: (a) a precipitation electrode; (b) a dispenser spaced apart from the precipitation electrode, and defining a first axis therebetween, the dispenser being at a first potential relative to the precipitation electrode; and (c) a system of electrodes being laterally displaced from the dispenser, being at a second potential relative to the precipitation electrode and capable of providing an electric field having at least one rotating component about the first axis; the dispenser and the system of electrodes being designed and constructed such that the liquefied polymer is dispensed from the dispenser and forms a plurality of entangled fibers moving in a direction of the precipitation electrode, hence forming the nonwoven material thereupon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.