| 摘要 |
PURPOSE:To obtain the unit having no defect in external appearance by coating optical fiber element wires with ultraviolet-ray setting type resin in a fused state as a protection layer individually in advance and forming them into one tape through a die, and irradiating the resin with ultraviolet rays and setting the resin. CONSTITUTION:The optical fiber element wires 3 formed by providing optical fibers 1 with coating layers 2 made of ultraviolet-ray setting type resin are supplied from bobbins 10, 10... and arrayed in parallel on the same plane through a guide roll 11 at sufficient intervals; and a resin coating jig 17 is used to coat each fiber element wire 3 sufficiently and previously with ultraviolet-ray setting resin which is supplied in a fused state from a material supply tank 12. Then, excessive resin is removed by the die 13 to form all wires in one body to specific size, and the resin in the fused state is irradiated with ultraviolet rays from an ultraviolet lamp 14 and set to form the protection layer 4, and resulting tape- shaped unit is drawn by a drawing machine 15 and taken up by a take-up machine 16.
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