Glass manufacturing – Processes – Forming product or preform from molten glass
Patent
1982-09-29
1984-08-28
Lindsay, Jr., Robert L.
Glass manufacturing
Processes
Forming product or preform from molten glass
65 6, 65 14, 65 16, 264 8, 264 14, 425 7, 425 8, C03B 3706
Patent
active
044682417
ABSTRACT:
The high velocity gradients associated with the shear layer or boundary layer of a supersonic gas stream, especially the potential core thereof, are applied to form fibers of a melted material projected across such gradients. Optimization of the effects of such gradients is sought by sustaining the magnitude of the gradients as long as possible by minimizing shear layer growth rate and/or stabilizing the rate of vortex formation, and by synchronizing the rate of projection of melt with the rate of vortex production. Provisions such as vortex triggering or density loading are made for reducing the shear layer growth rate. Provisions are also made for intermittently feeding melt at a rate synchronized with the rate of vortex formation. Provisions for regulating the temperature in the shear layer are made such as appropriately controlling stagnation gas temperature, causing an exothermal reaction within the gas stream, or causing combustion of the gas stream within an oxygen containing fiberization chamber.
REFERENCES:
patent: 2192944 (1940-03-01), Thomas
patent: 3928009 (1975-12-01), Perry
patent: 3936286 (1976-02-01), Dunkailo
patent: 4111673 (1978-09-01), Natta
patent: 4316731 (1982-02-01), Lin et al.
Breidenthal Robert E.
Lindsay, Jr. Robert L.
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