PRODUCTION OF DEPOSITED BODY OF FINE GLASS PARTICLE

摘要

PURPOSE:To prevent the cracking of the titled deposited body of fine glass particles by regulating the temp. of the leading end part of the glass fine particle deposited surface in a specified range when the glass fine particle deposited body is formed on the outer peripheral part of a revolving starting material. CONSTITUTION:A glass material is supplied onto the outer peripheral part of a starting material in the flame 14 of a burner 13 for synthesizing glass fine particles from the vicinity of one end of the starting material 11 which is rotated with its axis as the rotation axis and is substantially columnar or cylindrical to produce glass fine particles. The fine particles begin to deposit and the burner 13 is relatively moved in parallel with the axis of the starting material 11. Consequently, the deposited body 12 of the glass fine particles is formed on the outer peripheral part of the starting material 11 in the axial direction. The formation of the deposited body 12 of the glass fine particles is carried out while regulating the temp. of the leading end part 15 of the glass fine particle deposited surface in the range 750-900 deg.C.