Drum for a production unit for a non-woven material, method for production of a non-woven material and non-woven material obtained thus
US7500293B2 · kind B2 · utility
1Cited by
19References
12Claims
0Family size
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Inventor
Key dates
| Filing date | Nov 27, 2007 |
| Grant date | Mar 10, 2009 |
| Priority date | — |
| Expiry date | Nov 27, 2027 |
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.