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:
Mar. 08, 2011
Filed:
May. 22, 2006
James C. Breister, Oakdale, MN (US);
Andrew W. Chen, Woodbury, MN (US);
William P. Klinzing, Woodbury, MN (US);
Patrick J. Sager, Hastings, MN (US);
Douglas C. Sundet, Hudson, WI (US);
Matthew S. Linabery, Roseville, MN (US);
James C. Breister, Oakdale, MN (US);
Andrew W. Chen, Woodbury, MN (US);
William P. Klinzing, Woodbury, MN (US);
Patrick J. Sager, Hastings, MN (US);
Douglas C. Sundet, Hudson, WI (US);
Matthew S. Linabery, Roseville, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Methods and apparatus for meltblowing utilize an auxiliary manifold to dispense a fluid between an orifice of a die that is expelling polymeric fibers and an exit of a duct that is dispensing a secondary flow of gas onto the fibers. The fluid dispensed from the auxiliary manifold reduces a recirculation zone of the secondary flow between the exit and the orifice that, absent the fluid from the manifold, results in errant fibers that are blown back into the face of the die by the recirculating secondary flow.