JP2967884B

PURPOSE:To prevent the formation of the bridging of a resin and the generation of nonuniformity of resin coating films without allowing respective fibers to approach each other by putting the exposed parts of respective fibers resin into the resin ball of a thin film forming means, then moving the thin film forming means in the axial center direction of the respective fibers and forming the resin films on the exposed parts of the respective fibers. CONSTITUTION:The UV resin is dropped into a slot 6 of a thin film forming plate 2 as the thin film forming means to hold the UV resin ball 3 on the thin film forming plate. The thin film forming plate 2 is thereafter moved toward the optical fibers (f) (arrow direction A) to insert the optical fibers (f) into the slot 6 and to position the fibers in the middle of the UV resin ball 3. The thin film forming plate 2 is thereafter lowered (arrow B) down to the position of a coating S in parallel with the optical fibers (f). Then, the part upper than the coating S is formed with the UV resin films on the fibers (f) over the length (l). The resin coating films having a uniform shape of the resin pool are formed on the surfaces of the respective fibers of the tape fiber in this way.