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. 07, 2018
Filed:
Apr. 17, 2007
Applicants:
James E. Brang, Cocoa, FL (US);
Arnold Wilkie, Merritt Island, FL (US);
Jeff Scott Haggard, Cocoa, FL (US);
Inventors:
James E. Brang, Cocoa, FL (US);
Arnold Wilkie, Merritt Island, FL (US);
Jeff Scott Haggard, Cocoa, FL (US);
Assignee:
HILLS, INC., Melbourne, FL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D01D 5/098 (2006.01); D01D 4/02 (2006.01); B29C 47/08 (2006.01); B29C 47/88 (2006.01); B29C 47/00 (2006.01);
U.S. Cl.
CPC ...
D01D 4/025 (2013.01); D01D 5/0985 (2013.01); B29C 47/0014 (2013.01); B29C 47/0816 (2013.01); B29C 47/0859 (2013.01); B29C 47/8815 (2013.01);
Abstract
An apparatus for producing polymeric nanofibers utilizes a meltblown spinneret die having spin holes formed by grooves in plate(s) surface(s) of plate(s) where polymer exits at the plate(s) edge(s). The grooves are smaller than 0.005″ wide×0.004″ deep and have an L/D at least as large as 20:1. Flow rates of polymer through the apparatus are very low, on the order of 0.01 ghm or less. A meltblown fabric having fibers mostly less than 0.5 microns in diameter is produced.