Method for manufacturing glass-fine-particle-deposited body and method for manufacturing glass base material
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United States of America Patent
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Apr 25, 2017
Grant Date -
Oct 16, 2014
app pub date -
Sep 28, 2012
filing date -
Sep 29, 2011
priority date (Note) -
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Abstract
In the method for manufacturing a glass-fine-particle-deposited body according to the present invention, at least a part of a gas supplying pipe 25 from a temperature controlled booth 24 to a burner 18 for cladding is temperature-controlled so that the temperature at the burner side becomes high and temperature gradient becomes 5° C./m or more. The temperature control is performed so that the temperature gradient becomes preferably 15° C./m or more, more preferably 25° C./m or more. Specifically, the part is controlled to the predetermined temperature gradient by winding a tape heater 26 that is a heating element on the outer circumference of the gas supplying pipe 25 from the temperature controlled booth 24 to the burner 18 for cladding and temperature-controlling the tape heater 26.
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