Process for the production of a non-woven cloth constituted of continuous interconnected filaments and cloth thus obtained
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United States of America Patent
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Oct 18, 1994
Grant Date -
N/A
app pub date -
Apr 28, 1993
filing date -
Apr 22, 1993
priority date (Note) -
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status (Latency Note)
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Abstract
A process for the production of a non-woven sheet of continuous interconnected filaments, comprising producing biconstituted filaments of a size less than 4 dtex comprising two interconnected elemental filament components each of a different polymer, imparting to the biconstituted filaments a curl having a curling frequency of 3 to 30 curls per centimeter to impart to the filaments a bunching upon curling of 50 to 400%, and forming a non-woven sheet from the curled biconstituted filaments, the sheet having a weight of 10 to 400 g/m.sup.2. The non-woven sheet is then subjected to water jets supplied under a pressure of 50 to 300.times.10.sup.5 Pa to interlace and entangle the curled filaments constituting the sheet and to separate the interconnected filaments from each other.
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