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:
Jan. 12, 2021
Filed:
Oct. 02, 2012
Applicant:
Teijin Aramid B.v., Arnhem, NL;
Inventors:
Leonardus Antonius Godfried Busscher, Duiven, NL;
Michiel Jan Adriaan Jaarsveld, Utrecht, NL;
Assignee:
TEIJIN ARAMID B.V., Arnhem, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D01D 4/02 (2006.01); D01D 5/088 (2006.01); D01F 6/60 (2006.01); B29D 99/00 (2010.01);
U.S. Cl.
CPC ...
D01F 6/60 (2013.01); B29D 99/0078 (2013.01); D01D 4/02 (2013.01); D01F 6/605 (2013.01);
Abstract
A spinneret is used to reduce filament breakage during spinning of multifilament yarn being stretched at a high stretch ratio. The spinneret has a first group of spinning holes with capillaries and a second group of spinning holes with capillaries. The capillaries of the second group of spinning holes have a lower length to diameter (L/D) ratio than the capillaries of the first group of spinning holes. All of the capillaries have the same diameter, which is 100 μm or less.