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:
Oct. 18, 1977
Filed:
Aug. 27, 1973
Applicant:
Inventors:
John H Kozlowski, Vancouver, WA (US);
Paul C Litzinger, Camas, WA (US);
Frank J Steffes, Camas, WA (US);
Assignee:
Crown Zellerbach Corporation, San Francisco, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B22D / ; D21F / ;
U.S. Cl.
CPC ...
264 13 ; 1621 / ; 264140 ; 264205 ;
Abstract
A process of manufacturing fibers by forming a mixture of a solvent, a polymer and water and flashing the mixture through a nozzle. Water is present as a discontinuous phase in the mixture. The polymer may be any polymer capable of forming fiber, preferably a crystalline or a partially crystalline polymer. The preferred polymers are crystalline or partially crystalline polyolefins, preferably polyethylene or polypropylene. The discrete fibers thus formed can be easily refined and used for making paper webs.