CPC C03B 17/064 (2013.01) [C03B 5/225 (2013.01); C03B 5/1675 (2013.01); C03B 7/07 (2013.01); C03B 25/08 (2013.01); F27D 3/14 (2013.01)] | 19 Claims |
1. A manufacturing method for a glass article, the manufacturing method comprising:
a pre-heating step of heating a transfer pipe without flowing molten glass in the transfer pipe; and
a transfer step of causing the molten glass to flow through the transfer pipe after the pre-heating step,
wherein the transfer pipe comprises a main body portion having a tubular shape and a flange portion formed on an end portion of the main body portion,
wherein the main body portion is retained by a refractory in a horizontal posture or an incline posture, and
wherein, in the pre-heating step, the main body portion is heated while a weight of the flange portion is supported by a support device that allows movement of the flange portion in a longitudinal direction of the main body portion and the flange portion is moved in the longitudinal direction of the main body portion in accordance with extension of the main body portion.
|