Production method of nonwoven fabric
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United States of America Patent
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Nov 16, 2021
Grant Date -
N/A
app pub date -
Feb 21, 2018
filing date -
Mar 3, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A method for producing a nonwoven fabric is provided. The method includes spinning a molten aromatic polysulfone resin from a nozzle and extending it with a high temperature fluid ejected at high speed, thereby obtaining the aromatic polysulfone resin in a fibrous form, and collecting the aromatic polysulfone resin obtained in a fibrous form on a moving collecting member. The aromatic polysulfone resin has a melt mass flow rate of 130 g/10 min or more under conditions of a test temperature of 400° C. and a nominal load of 2.16 kg, which is determined based on ASTM D 1238. A distance from the nozzle to the collecting member is set to 30 mm or less.
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