Method and apparatus for the production of nonwoven web materials
US7504060B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2003 |
| Grant date | Mar 17, 2009 |
| Priority date | — |
| Expiry date | Jun 21, 2024 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H3/14
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a method of making a nonwoven web with desired fiber orientation, the method including the steps of providing a source of fibers, subjecting the fibers to an electrostatic charge, deflecting the fibers with a non-contacting deflecting device, collecting the fibers on a moving forming surface to form the nonwoven web. The invention also provides an apparatus for forming fibrous nonwoven webs, the apparatus comprising a source of fibers, a device for applying an electrostatic charge to the fibers, a non-contacting fiber deflecting device adapted to affect the fibers while the fibers are under the influence of the applied electrostatic charge, and a forming surface for collecting the fibers as a fibrous nonwoven web.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.