METHOD AND DEVICE FOR THE UNIFORM BONDING OF A NONWOVEN
Kind Code:
A1
Abstract not available for EP1567701
Abstract of corresponding document: WO2004048660
The invention relates to a discontinuous nonwoven formed by a carder, or other nonwovens formed from filaments. On account of the longitudinally oriented lengths of fibre after, for example, hydrodynamic needle-punching, said nonwovens are stronger in the longitudinal direction than in the transversal direction. This fact can be changed if the pre-bonded nonwoven undergoes a reorientation of the fibres, for example, during a lateral stretching treatment. The fibres already intertwined in the nonwoven are at least partially reoriented, for example, in the transversal direction. In this new position, another hydrodynamic bonding treatment can be carried out, in order to fix the fibres in said new position. In this way, the nonwoven is generally stronger than would be possible without the reorientation of the fibres.
Abstract of corresponding document: WO2004048660
The invention relates to a discontinuous nonwoven formed by a carder, or other nonwovens formed from filaments. On account of the longitudinally oriented lengths of fibre after, for example, hydrodynamic needle-punching, said nonwovens are stronger in the longitudinal direction than in the transversal direction. This fact can be changed if the pre-bonded nonwoven undergoes a reorientation of the fibres, for example, during a lateral stretching treatment. The fibres already intertwined in the nonwoven are at least partially reoriented, for example, in the transversal direction. In this new position, another hydrodynamic bonding treatment can be carried out, in order to fix the fibres in said new position. In this way, the nonwoven is generally stronger than would be possible without the reorientation of the fibres.
Inventors:
Fleissner, Gerold (CH)
Application Number:
EP20030811783
Publication Date:
08/31/2005
Filing Date:
11/21/2003
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Export Citation:
Assignee:
FLEISSNER GMBH (DE)
International Classes:
D04H1/46; D04H1/46; D04H13/00; D04H13/00; (IPC1-7): D04H1/46; D04H13/00
European Classes:
D04H1/46B; D04H13/00B3
Other References:
See references of WO 2004048660A1