PROCESS FOR PRODUCING OPTICAL FIBER PRODUCTS - SUMITOMO ELECTRIC INDUSTRIES

Title:

PROCESS FOR PRODUCING OPTICAL FIBER PRODUCTS

Document Type and Number:

WIPO Patent Application WO/1997/037950

Kind Code:

A1

Abstract:

A process for producing an optical fiber product including a storing step between a glass fiber drawing step at which a glass optical fiber wire covered with a primary covering layer on its circumference is wound on a reel and a processing step at which the optical fiber wire wound on the reel is rewound on a bobbin. At the storing step, the optical fiber wire wound on the reel is stored at a place whose average ambient temperature is T (> 0 �C) for at least 30,000/T2 (hr), or for a period of time of from 30,000/T2 (hr) to 210,000/T2 (hr) when a coloring layer is provided on the circumference of the wire. In optical fiber products such as ribbon-type optical fibers produced by a method including such a storing step, an increase in transmission loss due to separation between the glass fiber and the primary covering layer on its outer circumference and also the separation of the coloring layer provided on the outer circumference of the optical fiber wire are effectively suppressed.

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Inventors:

SHIMODA KOJI (JP)
AIKAWA HARUHIKO (JP)
YOSHIDA MOTOHIDE (JP)
HASEGAWA TAKASHI (JP)

Application Number:

PCT/JP1997/000817

Publication Date:

October 16, 1997

Filing Date:

March 14, 1997

Export Citation:

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Assignee:

SUMITOMO ELECTRIC INDUSTRIES (JP)
SHIMODA KOJI (JP)
AIKAWA HARUHIKO (JP)
YOSHIDA MOTOHIDE (JP)
HASEGAWA TAKASHI (JP)

International Classes:

C03C23/00; C03C25/10; G02B6/44; C03C25/12; (IPC1-7): C03C25/00; C03C25/02

Foreign References:

JPH03285845A	1991-12-17
JPS62245208A	1987-10-26

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