JPH0173813U

JPH0173813U -

Info

Publication number: JPH0173813U
Application number: JP1987168396U
Authority: JP
Priority date: 1987-11-02
Filing date: 1987-11-02
Publication date: 1989-05-18

Description

[Brief explanation of the drawing]

第１図は本考案実施例の断面略図、第２図は第
１図の−断面略図、第３図は別の実施例の断
面略図、第４図は更に別の実施例の断面略図であ
る。１……テープ形光フアイバー心線、２……素線
、３……被覆層、５……長辺、６……短辺、１０
……ダイス、１１……ダイス孔、２０……凹部、
２１……長辺側内面、２２……短辺側内面、２３
……平面部。 Fig. 1 is a schematic cross-sectional view of an embodiment of the present invention, Fig. 2 is a schematic cross-sectional view of Fig. 1, Fig. 3 is a schematic cross-sectional view of another embodiment, and Fig. 4 is a schematic cross-sectional view of yet another embodiment. . DESCRIPTION OF SYMBOLS 1... Tape-shaped optical fiber core wire, 2... Element wire, 3... Covering layer, 5... Long side, 6... Short side, 10
...Dice, 11...Dice hole, 20...Concavity,
21... Long side inner surface, 22... Short side inner surface, 23
...Plane part.

Claims

[Scope of utility model registration request]

It comprises a plurality of wires arranged on the same plane and a coating layer made of synthetic resin that wraps the wires, and the outer peripheral cross section of the coating layer is generally a flat oval shape, and a pair of parallel straight lines. In order to manufacture a tape-shaped optical fiber core wire having a long side and a pair of arcuate short sides, the plurality of strands described above are fed in a predetermined positional relationship generally vertically downward into the hole of the die, and the A generally liquid resin is applied around the strand above the die hole to form an uncured resin layer, the outer peripheral shape of the uncured resin layer is regulated by the inner periphery of the die hole, and below the die. In a die used in an apparatus for manufacturing a tape-shaped optical fiber core that cures an uncured resin layer, a pair of short side inner surfaces surrounding the short sides of the coating layer are provided on the inner surface of the die hole;
A pair of long side inner surfaces surrounding the long sides of the coating layer are provided, and each of the long side inner surfaces has a recess extending vertically in an intermediate portion between both the short side inner surfaces, and a recess between the recess and the short side. 1. A die for producing a tape-shaped optical fiber core, characterized in that a flat part is provided between the inner surface and the flat part extending along the long side surface of the coating layer.