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:
Aug. 21, 2012
Filed:
Mar. 19, 2007
John H. Conrad, Alpharetta, GA (US);
Eric E. Lennon, Roswell, GA (US);
Douglas J. Hulslander, Atlanta, GA (US);
Joerg Hendrix, Alpharetta, GA (US);
Detlef Frey, Niederkassel, DE;
John H. Conrad, Alpharetta, GA (US);
Eric E. Lennon, Roswell, GA (US);
Douglas J. Hulslander, Atlanta, GA (US);
Joerg Hendrix, Alpharetta, GA (US);
Detlef Frey, Niederkassel, DE;
Other;
Abstract
A method and associated apparatus for melt extruding a nonwoven web includes providing a plurality of fibers from an extrusion device. The fibers are conveyed through a diverging profile portion of a fiber drawing unit (FDU) that causes the fibers to spread and expand in the machine direction within the FDU. The fibers are then conveyed through a diverging diffusion chamber spaced from the outlet of the FDU to reduce the velocity of the fibers and further spread the fibers in the machine direction. The fibers may be subjected to an applied electrostatic charge in either the diffusion chamber or the FDU. From the outlet of the diffusion chamber, the fibers are laid onto a forming surface as a nonwoven web.