| 摘要 |
PURPOSE:To produce the distributed index light transmission body by distributing two kinds of original liquids for spinning which contain polymers, vinyl monomers and photosensitizers and are different in refractive index from each other into plural flow passages in a spinning mouthpiece device and discharging and spinning multilayered fibers from the mouthpiece device while the refractive index of the innermost layer is increased and the refractive index of the peripheral part is gradually decreased. CONSTITUTION:The original liquid A for spinning having the high refractive index is supplied from a hopper 815 and the original liquid B for spinning having the low refractive index from a hopper 825. These liquids are kneaded and extruded from extruders 811, 821 and are branched to the many flow passages by the discharge side ports of metering gear pumps 11, 12. The number (n) of the discharge side ports of the pumps 11, 12 is specified to 2-6 flow passages or 1 flow passage. The original liquids A, B flow through the flow passages 21, 25 into a spinning head 3 and are distributed to the many flow passages (m) of 2-20 by distributing nozzles 41, 52 until the liquids arrive at a metering nozzle 5. The original liquids A, B of respectively nXm number of the flow passages which have high/low refractive indices are adjusted in discharging compounding ratios in the nozzle 5 in such a manner that the respective layers of the fibers after the spinning have the resin compsn. having the prescribed refractive indices. The original liquid a is discharged from a central flow rate 65 and the mixed resin A+B is discharged successively outward by multilayered nozzles 7. |
