METHOD FOR COLLAPSING A HOLLOW SUBSTRATE TUBE INTO A ROD-LIKE PREFORM WHILE HEATING
摘要
The present invention relates to a method for collapsing a hollow substrate tube into a rod−like preform while heating by reciprocating a heating element along the length of the substrate tube. The present invention is characterized in that a constant electric power is supplied to the heating element during collapsing.
申请公布号
WO03055814(A1)
申请公布日期
2003.07.10
申请号
WO2002NL00862
申请日期
2002.12.20
申请人
DRAKA FIBRE TECHNOLOGY B.V.;SIMONS, DENNIS, ROBERT;MILICEVIC, IGOR