Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Optical fiber – waveguide – or preform
Patent
1998-09-03
2000-03-28
Vargot, Mathieu D.
Plastic and nonmetallic article shaping or treating: processes
Optical article shaping or treating
Optical fiber, waveguide, or preform
264 129, 264DIG65, 425143, 425DIG39, B29D 1100
Patent
active
060427558
ABSTRACT:
A heating furnace is used in a drawing device for drawing a base material made of plastic. The base material is fed into the heating furnace, melted under heat and drawn into a plastic optical fiber. The heating furnace is divided into a pre-heating zone located upstream and a heat-melting zone located downstream in the advancing direction of the base material and of the plastic optical fiber made therefrom. The preheating zone includes a pre-heater for pre-heating the base material, while the heat-melting zone includes a melting heater for melting the base material. Both zones are controllable independently so as to give an appropriate temperature for each zone.
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patent: 5614253 (1997-03-01), Nonaka et al.
patent: 5639512 (1997-06-01), Nonaka et al.
English Language Abstract of JP No. 7-234322.
English Language Abstract of JP No. 7-234323.
English Language Abstract of JP No. 7-234324.
English Language Abstract of JP No. 7-234325.
English Language Abstract of JP No. 7-287132.
Sumitomo Wiring Systems Ltd.
Vargot Mathieu D.
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