Drum for a production unit for a non-woven material, method for production of a non-woven material and non-woven material obtained thus
US7350279B2 · kind B2 · utility
3Cited by
15References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 8, 2003 |
| Grant date | Apr 1, 2008 |
| Priority date | — |
| Expiry date | Jul 8, 2024 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H13/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A drum for processing nonwovens has a perforated lateral surface and an interior divided into first and second compartments, respectively associated with first and second lateral surface portions of the drum. A partial vacuum in each of the compartments aspirates and secures a tangentially-engaged nonwoven preform against the lateral surface of the drum for further processing. The drum may be incorporated in a production unit or installation including a spunbond tower for spinning filaments to form the nonwoven preform for tangential delivery to the drum. The resulting nonwoven may thereby be provided with uniform properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.