Method and device for producing a shaped non-woven, non-woven obtained and use thereof
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United States of America Patent
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Jul 5, 1994
Grant Date -
N/A
app pub date -
Jul 6, 1992
filing date -
Jul 16, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for producing a shaped non-woven comprises the steps of feeding fibers on a carding machine over a limited width, superposing on a receiving system the fibrous web leaving the carding machine and needling the superposed layers. The superposition is preferably obtained by winding over a cylindrical drain. The shaped non-woven obtained has a thickness gradually decreasing towards its selvedges. The obtained strip has a cross-section of an asymmetrical shape by longitudinal cutting along the median axis and optionally two longitudinal cuttings on the selvedge side.
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