发明名称 |
MANUFACTURE OF DIES FOR COATING OPTICAL FIBER |
摘要 |
PURPOSE:To manufacture accurately and inexpensively dies capable of coating an optical fiber without deteriorating various characteristics of the fiber by heating and working part of a heat shrinkable plastic tube to form a smaller diameter part having a desired length and by using the other parts as larger diameter parts. CONSTITUTION:A core wire 2 made of heat resistant metal, glass or the like is put in a heat shrinkable plastic tube 1 made of fluororesin, cross-linked polyolefin or the like, and an intermediate part of the tube 1 in the longitudinal direction is heated to a prescribed temp. with a heater 3. At the same time, the tube 1 is extended in the arrow directions to actively heat-shrink the intermediate part. This tube 1 is then cut to obtain 2 dies 6 each consisting of a smaller diameter part 4 having an inside diameter decided by the wire 2 and of a larger diameter part 5. By attaching the die to the outlet of a coating vessel set between a heating furnace for spinning an optical fiber and a coat curing furnace, the optical fiber can be coated desirably. |
申请公布号 |
JPS5795844(A) |
申请公布日期 |
1982.06.14 |
申请号 |
JP19800170695 |
申请日期 |
1980.12.03 |
申请人 |
NIPPON DENSHIN DENWA KOSHA;FURUKAWA DENKI KOGYO KK |
发明人 |
KIMURA TAKAO;SATOU TSUGIO;KOMATSU WATARU |
分类号 |
C03C25/12;B29C45/00;B29C55/00;B29C61/00;B29C61/02;B29C61/06;G02B6/44 |
主分类号 |
C03C25/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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