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:
May. 22, 1984
Filed:
May. 07, 1979
Applicant:
Inventors:
Georges Voituron, Vilvoorde, BE;
Jean-Pierre Pleska, Paturages, BE;
Assignee:
Solvay & Cie, Brussels, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21F / ;
U.S. Cl.
CPC ...
264 13 ; 264140 ;
Abstract
A process for the production of polypropylene fibrids of short length by abrupt expansion of a liquid mixture of molten polypropylene, an alkane solvent for the polypropylene, and a minor amount of a non-solvent for the polypropylene. The mixture, which is at a high temperature and high pressure, is ejected through an expansion orifice to instantaneously vaporize the alkane and to solidify the polypropylene.