APPARATUS AND METHODS FOR PRODUCING SPLIT SPUNBOND FILAMENTS
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United States of America Patent
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Issued Date -
Sep 20, 2007
app pub date -
Mar 20, 2006
filing date -
Mar 20, 2006
priority date (Note) -
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Abstract
A spunbonding apparatus capable of producing multicomponent spunbond filaments. The spunbonding apparatus includes a spunbonding apparatus comprises a spinneret discharging multicomponent filaments and a filament-drawing device applying a first force that is effective to attenuate the filaments. A force applicator stationed between the spinneret and the filament-drawing device is operative for applying a second force to the filaments that promotes filament splitting. Splitting may occur before the filaments enter the filament-drawing device, within the filament-drawing device, and/or after discharge from the filament-drawing device.
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