C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
C03B 37/012 (2006.01) C03B 23/047 (2006.01) C03B 37/018 (2006.01) C03B 37/027 (2006.01)
Patent
CA 2100070
2100070 9221627 PCTABS00017 A process is known for manufacturing rod-like preforms (3) for optical fibres by collapsing a tubular basic body (14). In order to improve such a process, so that preforms as fault-free as possible can be obtained, a rotating tubular basic body (14) is continuously and horizontally supplied into a heating zone. Outer and inner dimensions of the working body (14), the spacing between the boundary surface zone and the inner surface (13) of the basic body, the viscosity of the basic body (14) material in a collapsing zone, the difference between the inner and outer pressures, the height of the inner pressure, the preform haul-off-speed and the feed speed of the basic body are selected so that a stem (6) made of the core material of the basic body is formed from the collapsing zone in the opposite direction to the preform (3) hauling direction, in the axis of the basic body (14).
Leber Helmut
Reimann Klaus
Schaper Hartwig
Treber Norbert
Vilsmeier Gerhart
Gowling Lafleur Henderson Llp
Heraeus Quarzglas Gmbh
Leber Helmut
Reimann Klaus
Schaper Hartwig
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