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. 11, 2000
Filed:
May. 28, 1998
Applicant:
Inventor:
Eckhard CA. Schwarz, Neenah, WI (US);
Assignee:
Biax-Fiberfilm Corporation, Neenah, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01D / ; D01D / ; D04H / ;
U.S. Cl.
CPC ...
264555 ; 264103 ; 2642108 ; 26421114 ; 26421117 ; 425 66 ; 425 722 ; 4253782 ; 4253791 ; 4253822 ; 425464 ;
Abstract
An apparatus and process for extruding fiberforming thermoplastic polymers through spinning nozzles arranged in multiple rows are forming a non-woven web of high strength fibers. The molten fibers are accelerated by expanding hot gas flowing parallel to the extrusion nozzles and the fibers to a first velocity and cooled below their melting point, and subsequently accelerated to a higher velocity by an air jet fed with compressed cold air. The resulting fibers have a high degree of molecular orientation and tenacity and are collected on a moving collecting surface as a non-woven web.