光ファイバテープ心線の製造方法

Production of coated optical fiber ribbon

Abstract

PROBLEM TO BE SOLVED: To a process for producing a coated optical fiber ribbon which hardly gives rise to the occurrence of warpage of the coated optical fiber ribbon. SOLUTION: This process for production consists in lining up a plurality of optical fibers 2,... in parallel, feeding these fibers to a coating die 10, forming an integral coating layer consisting of an uncured UV curing type resin liquid on an assemblage of the optical fibers 2, subjecting this coating layer to preirradiation by irradiating the layer respectively with UV rays by spot type UV irradiation devices 11a, 11b from a front surface 1a side and a rear surface 1b side and regulating the curing state of the integral coating layer, then introducing the fibers to a UV irradiation device 13, again irradiating the coating layer with the UV rays to completely cure the integral coating layer and taking up the coated optical fiber ribbon 1 with a drum 15 through a take-off pulley 14.
(57)【要約】 【課題】 光ファイバテープ心線の反りが発生しにくい 光ファイバテープ心線の製造方法を提供する。 【解決手段】 複数本の光ファイバ素線2…を並列させ て、コーティングダイス10に送り込み、これら光ファ イバ素線2の集合体の上に未硬化の紫外線硬化型樹脂液 からなる一括被覆層を形成し、上面1a側と下面1b側 から、スポット式紫外線照射装置11a,11bによっ てそれぞれ紫外線を照射してプレ照射を実施し、一括被 覆層の硬化状態を調整した後、紫外線照射装置13に導 き、再び紫外線を照射し、一括被覆層を完全に硬化さ せ、引き取りプーリー14を経てドラム15にて光ファ イバテープ心線1を巻き取る。

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