Infrared solvent stripping process

A process for stripping chemically bonded spinning solvent from a solution-spun nonwoven web comprising the steps of providing a nonwoven web comprising solvent-laden polymeric fibers having average fiber diameters of less than about 1 micrometer, and transporting the nonwoven web through a solvent...

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Bibliographic Details
Main Authors HOVANEC JOSEPH BRIAN, FRISK SIMON
Format Patent
LanguageChinese
English
Published 21.10.2009
Subjects
BLASTING
BRAIDING
COTTON-WOOL
DRYING
DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS
HEATING
KNITTING
LACE-MAKING
LIGHTING
MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL
MECHANICAL ENGINEERING
NON-WOVEN FABRICS
TEXTILES
TRIMMINGS
WADDING
WEAPONS
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Summary:A process for stripping chemically bonded spinning solvent from a solution-spun nonwoven web comprising the steps of providing a nonwoven web comprising solvent-laden polymeric fibers having average fiber diameters of less than about 1 micrometer, and transporting the nonwoven web through a solvent stripping zone wherein infrared radiation irradiates the nonwoven web and a solvent stripping fluid impinges on the nonwoven web in order to reduce the solvent concentration of the fibers to less than about 10,000 ppmw.
Bibliography:Application Number: CN200780046998