Flat nonwoven fiber aggregate with three-dimensional structure and method for its production
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United States of America Patent
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Apr 20, 2004
Grant Date -
N/A
app pub date -
Aug 22, 2001
filing date -
Jan 8, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A three-dimensionally structured fibrous web made up of continuous-filament layers which alternate perpendicular to the surface plane, and denser short-fiber layers that are permanently thermally bonded in a continuous or spot-like manner to the filament layers, the wide-mesh continuous-filament layers representing a scrim, lattice, or netting, has on the short-fiber layers repeating, fold- or wave-shaped elevations. In the manufacturing process, all of the layers of the laminate are subjected together to a shrinkage process at a temperature which lies between the softening and melting points of the scrim material.
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