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 at least one infrared solvent stripping station wherein infrared radiation irradiates the nonwoven web in the absence of a solvent stripping fluid impinging on the nonwoven web in order to reduce the solvent concentration of the fibers to less than about 10,000 ppmw.
申请公布号
EP2174084(A1)
申请公布日期
2010.04.14
申请号
EP20080781650
申请日期
2008.07.11
申请人
E. I. DU PONT DE NEMOURS AND COMPANY
发明人
LAXTON, CHRISTEL, BERTA;WISEMAN, B., LYNNE;NEWTON, CHRISTOPHER, WILLIAM;FRISK, SIMON