JPS5720701A - Optical fiber core - Google Patents
Optical fiber coreInfo
- Publication number
- JPS5720701A JPS5720701A JP9495080A JP9495080A JPS5720701A JP S5720701 A JPS5720701 A JP S5720701A JP 9495080 A JP9495080 A JP 9495080A JP 9495080 A JP9495080 A JP 9495080A JP S5720701 A JPS5720701 A JP S5720701A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- covering
- polypropylene
- mfi
- primary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/104—Coating to obtain optical fibres
- C03C25/1065—Multiple coatings
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
PURPOSE:To obtain optical fiber cores with low optical attenuation, low water absorbing property and high wear resistance by using crystal polypropylene with a specific melt flow index (MFI) as the outer covering of an optical fiber core which is coated with plural plastic layers. CONSTITUTION:After coating an optical fiber (quartz) with a primary plastic covering (silicons resin or the like) 2, isotactic polypropylene (crystal polypropylene) whose MFI is 3-15g/10min at 230 deg.C 2.16kg and 8 times of the MFI of 230 deg.C at 290 deg.C 2.16kg is used as a secondary plastic covering to coat the primary covering 2. If necessary, a buffer layer 4 is applied between the coverings 2 and 3. The polypropylene with the above-mentioned characteristics has superior workability, making it possible to obtain superior optical fiber cores which are uniformly coated, have no distortion and scars on the covering layers and do not increase optical loss even if temperature and pressure are variously changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9495080A JPS5720701A (en) | 1980-07-14 | 1980-07-14 | Optical fiber core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9495080A JPS5720701A (en) | 1980-07-14 | 1980-07-14 | Optical fiber core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5720701A true JPS5720701A (en) | 1982-02-03 |
| JPH027045B2 JPH027045B2 (en) | 1990-02-15 |
Family
ID=14124216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9495080A Granted JPS5720701A (en) | 1980-07-14 | 1980-07-14 | Optical fiber core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5720701A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0890860A2 (en) * | 1997-07-10 | 1999-01-13 | Alcatel | Optical fiber cable components made from polyolefin materials |
-
1980
- 1980-07-14 JP JP9495080A patent/JPS5720701A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0890860A2 (en) * | 1997-07-10 | 1999-01-13 | Alcatel | Optical fiber cable components made from polyolefin materials |
| EP0890860A3 (en) * | 1997-07-10 | 2000-03-29 | Alcatel | Optical fiber cable components made from polyolefin materials |
| CN100379809C (en) * | 1997-07-10 | 2008-04-09 | 阿尔卡塔尔公司 | Polyolefin material suitable to optical fiber cable assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH027045B2 (en) | 1990-02-15 |
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