Device for needling a prebonded web
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United States of America Patent
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Apr 13, 1999
Grant Date -
N/A
app pub date -
Sep 5, 1997
filing date -
Sep 10, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device for needling a prebonded web (1), comprises at least one needle board (3) reciprocatingly movable in a stitching direction, a stitch base (2) between a feed roller (6) and a discharge roller (7), which stitch base is located directly opposite the needle board (3) and forms a web guide that is convex in a direction of web movement. The stitch base (2) consists of blades (9) extending transversely to the direction of web movement and having end faces (10) defining a continuously curved enveloping surface. The end faces (10) constituting a web support, and between which blades there engage at least two needle rows extending tranversely to the direction of web movement engage between adjacent blades during their reciprocation.
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