Apparatus for improving mechanical characteristics of nonwoven materials
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United States of America Patent
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Jul 17, 2007
Grant Date -
May 20, 2004
app pub date -
Mar 19, 2002
filing date -
Dec 19, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus for forming a nonwoven material from a liquefied polymer, the apparatus comprising: (a) a precipitation electrode; (b) a dispenser spaced apart from the precipitation electrode, and defining a first axis therebetween, the dispenser being at a first potential relative to the precipitation electrode; and (c) a system of electrodes being laterally displaced from the dispenser, being at a second potential relative to the precipitation electrode and capable of providing an electric field having at least one rotating component about the first axis; the dispenser and the system of electrodes being designed and constructed such that the liquefied polymer is dispensed from the dispenser and forms a plurality of entangled fibers moving in a direction of the precipitation electrode, hence forming the nonwoven material thereupon.
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