Glass manufacturing – Processes – Forming product or preform from molten glass
Patent
1977-09-19
1979-02-20
Lindsay, Jr., Robert L.
Glass manufacturing
Processes
Forming product or preform from molten glass
65 16, 264 12, 425 7, C03B 3704
Patent
active
041405099
ABSTRACT:
Method and equipment are disclosed for forming fibers from attenuable material such as molten glass, by the use of high velocity whirling gas currents or tornadoes. Attenuation is preferably effected in two stages, the first of which utilizes a pair of high velocity whirling currents or tornadoes formed by delivering a gaseous jet through a jet guiding device of trough-like form which is concavely curved, thereby developing a pair of counter-rotating tornadoes, with a zone of laminar flow therebetween, a stream of the attenuable material being delivered to the jet in the zone of laminar flow. A larger gaseous blast is also utilized being directed in a path intercepting the path of the jet to provide a zone of interaction also characterized by a pair of counter-rotating tornadoes, the stream of attenuable material being carried by the jet into the blast thereby subjecting the material to a second stage of attenuation in said zone of interaction.
REFERENCES:
patent: 2318243 (1943-05-01), McClure
patent: 3874886 (1975-04-01), Levecque et al.
Battigelli Jean A.
Levecque Marcel
Plantard Dominique
Lindsay, Jr. Robert L.
Saint-Gobain Industries
Synnestvedt John T.
Synnestvedt Kenneth P.
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