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:
Aug. 22, 2006
Filed:
Oct. 09, 2000
Gerhard Wolf, Hirschau, DE;
Andreas Emmel, Hahnbach, DE;
Gerhard Wolf, Hirschau, DE;
Andreas Emmel, Hahnbach, DE;
Applikations-und Technikzentrum fur Energieverfahrens-Umwelt-und Stromungstechnik (ATZ-EVUS), Sulozbach-Rosenberg, DE;
Abstract
A method for producing powders that consist of substantially spherical particles from a material such as glass, ceramics or plastic that produces a highly viscous melt that solidifies at a glass transition temperature Tor at a solidification temperature T. The inventive method comprises the following steps: (a) producing a melt of a viscosity η in the range of from 0.1 to 100 Ns/m; (b) atomizing the melt using a first gas, the first gas having a temperature T≧Tor ≧0.5Tat the outlet of the nozzle and (c) cooling off the particles produced by atomization in a cooling section downstream of the nozzle using a coolant, the temperature of the coolant being smaller than Tor T.