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, 1991
Filed:
Jul. 13, 1990
Albert J Pennings, Norg, NL;
Mees Roukema, Groningen, NL;
Akzo N.V., , NL;
Abstract
An approximately 1 to 6 wt. % solution manufactured from polyethylene with a molecular weight M.sub.w of at least one million and a solvent is extruded into a spinning duct at an extrusion temperature T.sub.E =180.degree. to 250.degree. C. at an extrusion rate V.sub.E =5 to 150 m/min. The duct is kept at a temperature of 100.degree. to 250.degree. C. by means of a heating device below the jet outlet area. The fibers are drawn off at a rate V.sub.w of at least 500 m/min, preferably 1500 to 4000 m/min, and freed of the solvent without further stretching. The fibers obtained are especially well suited for manufacturing industrial yarns, protective clothing, bulletproof vests, ropes, and parachutes. In the form of staple fibers, they are suitable for reinforcing various plastics.