Method for manufacturing basalt fiber
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 18, 2011
Grant Date -
Jan 4, 2007
app pub date -
Jun 19, 2006
filing date -
Jun 20, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Basalt filament is manufactured in such a manner that the fiber diameter can be controlled and the filament is not severed during the winding step. A network former and a glass modifier are formed and maintained with respect to basalt rock ore, and the crystallization and binding of basalt fiber are inhibited, the heat-resistance property of basalt fiber is greatly improved from the conventional 750° C. to 850 or 900° C., and significant cost reduction is achieved over conventional products. The method includes the steps of: grinding basalt rock as a material; washing a resultant ground rock; melting the ground rock that has been washed; transforming a molten product into fiber; and drawing the fiber in an aligned manner, and winding it. The temperature of the molten product in the melting step is 1400 to 1650° C., and log η is 2.15 to 2.35 dPa·s and preferably 2.2 to 2.3 dPa·s, where η is the viscosity of the molten product.
First Claim
Other Claims data not available
