The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 17, 2013
Filed:
Jul. 09, 2008
Christel Berta Laxton, Hopewell, VA (US);
B. Lynne Wiseman, Richmond, VA (US);
Christopher William Newton, Richmond, VA (US);
Simon Frisk, Richmond, VA (US);
Christel Berta Laxton, Hopewell, VA (US);
B. Lynne Wiseman, Richmond, VA (US);
Christopher William Newton, Richmond, VA (US);
Simon Frisk, Richmond, VA (US);
E I du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
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.