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. 17, 2004
Filed:
Jul. 26, 2001
Applicant:
Inventors:
Vishal Bansal, Richmond, VA (US);
Michael C. Davis, Midlothian, VA (US);
Edgar N. Rudisill, Nashville, TN (US);
Assignee:
E.I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01D 5/26 ; D01D 5/32 ; D04H 1/56 ; D04H 1/72 ;
U.S. Cl.
CPC ...
D01D 5/26 ; D01D 5/32 ; D04H 1/56 ; D04H 1/72 ;
Abstract
A process for forming multiple component meltblown fibers by extruding a first distinct melt-processable polymer through a row of first extrusion orifices, simultaneously extruding a second distinct melt-processable polymer through a row of second extrusion orifices, fusing the first and second melt-processable polymers into extruded composite filaments after extrusion, and pneumatically attenuating and breaking the extruded composite filaments with jets of high velocity gas so as to form the multiple component meltblown fibers.