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:
Nov. 26, 2002
Filed:
Jul. 08, 1998
Paul C. Nordine, Deerfield, IL (US);
J. K. Richard Weber, Arlington Heights, IL (US);
John J. Felten, Palatine, IL (US);
Containerless Research, Inc., Evanston, IL (US);
Abstract
The present invention provides a method for drawing fibers from materials which exhibit low viscosities at the equilibrium melting temperature. Further, the present invention provides novel drawn fibers from materials which were thought to be incompatible with a fiber-drawing process. The present invention also provides a means of minimizing recrystallization of molten materials during fiber drawing. Still further, the present invention provides novel drawn fibers with a greater tensile strength and greater concentrations of additives as compared to prior art fibers. Lastly, the present invention provides a means for producing crystalline fibers with controlled chemical compositions, and fibers with high tensile strengths as compared to prior art fibers of the same composition. The present invention achieves these objectives by heating the desired materials until a liquid melt is formed, undercooling the melt until the proper viscosity is reached, initiating fiber drawing by inserting a “stinger” into the molten material, then finally drawing the fibers at the desired speed so that fibers of the desired composition and diameter are formed. If desired, crystalline fibers can be formed by heating the drawn fibers until crystallization occurs. The present invention also provides for drawing fibers from a melt under either containerless conditions or within a container.