MANUFACTURE OF PLASTIC OPTICAL FIBER

摘要

PURPOSE:To increase the amount of platinum and to shorten a setting time by extruding an organic siloxane polymer which forms the core of an optical fiber and thermosetting resin which forms the clad at the same time by using an extruder. CONSTITUTION:A normal tube extruder is so reconstructed as to supply the organic siloxane polymer to an air injection port at a die point. This extruder injects the thermosetting resin which forms the clad from the resin injection port 1 of a head by this extruder and the liquid organic siloxane polymer is sent in from an opening 2 used as an air insertion port; and they are extruded from a die 3 at the same time to form the core and clad. This clad is made of fluororesin and the organic siloxane polymer of the core is cross-linked ad set by the reaction of hydroxyl which uses a platinum compound as a catalyst. Further, the organic siloxane polymer of the core is cross-linked and set by radiation irradiation.