Glass manufacturing – Processes of manufacturing fibers – filaments – or preforms – Formation of fiber or preform utilizing fluid blast
Reexamination Certificate
2002-02-13
2008-12-02
Crispino, Richard (Department: 1791)
Glass manufacturing
Processes of manufacturing fibers, filaments, or preforms
Formation of fiber or preform utilizing fluid blast
C065S456000
Reexamination Certificate
active
07458235
ABSTRACT:
A method is provided to produce fine diameter glass fibers with fewer defects through a combination of lower attenuating gas velocities and the use of spinners having more and smaller holes. The method uses a device for internal centrifugation of mineral fibers including a centrifuge equipped with a peripheral band perforated with orifices distributed in a plurality of annular zones arranged on top of each other, assuming that the centrifuge is in centrifugation position. The device includes at least two annular zones whose number of orifices per unit of surface area differs by a value greater than or equal to 5%, 10%, or 20%.
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Beaufils Sébastien
Trabbold Mark
Wagner Christophe
Yang Alain
Crispino Richard
Dehghan Queenie
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Saint-Gobain Isover
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