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:
Mar. 26, 2002
Filed:
Dec. 09, 1999
Walter A. Johnson, Aurora, CO (US);
Johns Manville International, Inc., Denver, CO (US);
Abstract
A method of making a spinner disc for a rotary fiberization process, such as but not limited to a glass fiberization process, includes: forming a spinner disc from an alloy that forms a protective oxide film on surfaces of the spinner disc exposed to the atmosphere; forming fiberizing holes in an annular peripheral sidewall of the spinner disc; and applying a plasma to a surface of the spinner disc to remove hydrocarbons and sulfurous compounds from the surface of the spinner disc which would otherwise reduce and/or react with and degrade the protective oxide film forming on the surface of the spinner disc when the spinner disc is exposed to the atmosphere. Preferably, the surface of the spinner disc is solvent cleaned subsequent to the formation of the fiberizing holes and prior to the application of the plasma; preferably, the plasma used to plasma clean the spinner disc is a low temperature plasma of charged particles; and the spinner disc is heat treated subsequent to applying the plasma to the surface of the spinner disc to form a strong continuous oxide film or films on the dean surface of the spinner disc and to strengthen the alloy.