EP0218244A2
Expired / Lapsed
EP
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Method for producing optical fiber
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1986-10-08
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Granted: —
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Expires: 2006-10-08
Abstract
Abstract A method for producing an optical fiber which comprises steps of: spinning an optical fiber from a molten preform for an optical fiber, applying a UV-curable resin to the surface of the spun optical fiber, and irradiating UV light through a layer of a material for absorbing UV light and a layer of a gas for preventing uncuring of the UV-curable resin to cure the UV-curable resin, by which the UV curable resin is homogeneously cured along its length.
Inventors
- 👤 Masakatsu Yokohama Works Sugai
- 👤 Katsuyuki Yokohama Works Tsuneishi
- 👤 Yuji Yokohama Works Kameo
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 20:01
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/12; B; B05; B05D; B05D3/00; B05D3/06; B29; B29C; B29C35/00; B29C35/02; B29C35/08; B29C35/10; C03B; C03B37/00; C03C25/104; C03C25/106; B29C35/0805; B29C2035/0827; B29L; B29L2011/00; B29L2011/0075
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
67 words
A method for producing an optical fiber which comprises steps of: spinning an optical fiber from a molten preform for an optical fiber, applying a UV-curable resin to the surface of the spun optical fiber, and irradiating UV light through a layer of a material for absorbing UV light and a layer of a gas for preventing uncuring of the UV-curable resin to cure the UV-curable resin.
Claim 2
Independent Claim
67 words
A method for producing an optical fiber which comprises steps of: spinning an optical fiber from a molten preform for an optical fiber, applying a UV-curable resin to the surface of the spun optical fiber, and irradiating UV light through a layer of a material for absorbing UV light and a layer of a gas for preventing uncuring of the UV-curable resin to cure the UV-curable resin.
Claim 3
Dependent Claim
47 words
The method for producing an optical fiber according to claim 1, wherein at least two kinds of the material for absorbing UV light are used and the kinds of the material are changed so that the transmission of UV light is not substantially changed as time passes.
Claim 4
Dependent Claim
48 words
The method for producing an optical fiber according to claim 1, wherein at least two kinds of the material for absorbing UV light are used and the molar ratio of the material is changed so that the transmission of UV light is not substantially changed as time passes.
Claim 5
Dependent Claim
25 words
The method for producing an optical fiber according to claim 1, wherein the material for absorbing UV light is a mixture of nitrogen and chlorine.
Claim 6
Dependent Claim
25 words
The method for producing an optical fiber according to claim 4, wherein the molar fraction of chlorine in the mixture is decreased as time passes.
References Cited (Backward Citations)
No citation records indexed.
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