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. 12, 2014
Filed:
Dec. 28, 2006
Michael R. Berrigan, Oakdale, MN (US);
John D. Stelter, St. Joseph Township, WI (US);
Ruth A. Ebbens, Hudson, WI (US);
Sian F. Fennessey, Minneapolis, MN (US);
Michael R. Berrigan, Oakdale, MN (US);
John D. Stelter, St. Joseph Township, WI (US);
Ruth A. Ebbens, Hudson, WI (US);
Sian F. Fennessey, Minneapolis, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A method for making a bonded nonwoven fibrous web comprising extruding melt blown fibers of a polymeric material, collecting the melt blown fibers as an initial nonwoven fibrous web, annealing the initial nonwoven fibrous web with a controlled heating and cooling operation, and collecting the dimensionally stable bonded nonwoven fibrous web is described. The bonded nonwoven fibrous web shrinkage is typically less than 4 percent relative to the initial nonwoven fibrous web.