WO2004102243A1 - プラスチック光ファイバコード - Google Patents
プラスチック光ファイバコード Download PDFInfo
- Publication number
- WO2004102243A1 WO2004102243A1 PCT/JP2004/006713 JP2004006713W WO2004102243A1 WO 2004102243 A1 WO2004102243 A1 WO 2004102243A1 JP 2004006713 W JP2004006713 W JP 2004006713W WO 2004102243 A1 WO2004102243 A1 WO 2004102243A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plastic optical
- fiber
- optical fiber
- sizing agent
- tensile strength
- Prior art date
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4402—Optical cables with one single optical waveguide
Definitions
- the present invention relates to a plastic optical fiber code for communication having a fiber tensile member.
- the optical fiber used as a large-capacity communication medium is a silica glass optical fiber.
- POF plastic optical fiber
- LAN Local Area Network
- intelligent building Intelligent building
- Optical fibers are not practical if left bare. Because of the necessity of protecting the optical fiber, increasing the number of cores, attaching connectors, etc., the optical fiber is coated or composited with a metal tensile strength material such as steel wire or a fiber tensile strength material such as aramid fiber, etc. It is laid and used as a form of cable.
- a metal tensile strength material such as steel wire or a fiber tensile strength material such as aramid fiber, etc. It is laid and used as a form of cable.
- a plastic optical fiber cord for communication having a plastic optical fiber and a fiber tensile strength member for example, a technique described in Japanese Patent Application Laid-Open No. 10-96840 can be exemplified.
- a tensile strength layer having a tensile strength member is provided on the outer periphery of a P ⁇ F core wire obtained by stretching a plastic optical fiber preform whose core and cladding are plastic, and the outer periphery of the tensile strength layer is Discloses a plastic optical fiber cord in which a thermoplastic resin layer is extruded and covered, and describes using an aramide fiber as a tensile strength member.
- an aramide fiber is disposed around an optical fiber core, a sheath is provided around the aramide fiber, and the sheath is provided inside the sheath.
- a non-metallic optical fiber package characterized in that a tensile strength member made of an inorganic fiber reinforced plastic is inserted therethrough.
- a refractive index distribution type plastic optical fiber (hereinafter referred to as fluorine) having a central part (core and cladding) made of a fluororesin and a central covering part made of an acrylic resin covering the outer periphery thereof Resin-based POF), using aramid fiber as the fiber tensile strength member, and leaving the perimeter of the fluororesin-based POF in direct contact with the aramid fiber for a long time at high temperature and high humidity.
- fluorine refractive index distribution type plastic optical fiber having a central part (core and cladding) made of a fluororesin and a central covering part made of an acrylic resin covering the outer periphery thereof Resin-based POF
- aramid fiber as the fiber tensile strength member
- the low molecular weight polyether which is the main component of the sizing agent (bundling agent) contained in the aramide fiber, causes the acryl-based resin to degrade ethically and become brittle. by. It is considered that the embrittlement of the acrylic resin causes cracks to occur in the acrylic resin coating and exerts unnecessary stress on the central part, which is the light-guiding part, which may increase transmission loss. Also, the embrittlement of the center coating deteriorates the load bearing performance of the POF itself.
- an object of the present invention is to provide a plastic optical fiber cord in which the sizing agent used in the fiber tensile strength member suppresses the chemical effect on P ⁇ F and the transmission characteristics are less deteriorated.
- a first aspect of the present invention is a plastic optical fiber cord having one or a plurality of plastic optical fibers and a fiber tensile member, wherein the fiber tensile member comprises a sizing agent. It is characterized in that it is not substantially contained.
- the fiber tensile strength material does not substantially contain a sizing agent, the reaction between the sizing agent and POF can be greatly suppressed. That is, since the embrittlement of the outer periphery of the POF due to the chemical reaction can be prevented, it is possible to provide a plastic optical fiber cord with little deterioration in transmission characteristics.
- the content of the sizing agent is 200 ppm or less in terms of mass ratio to the entire fiber tensile strength member. According to this, it is possible to provide a plastic optical fiber code in which the embrittlement of the outer periphery of the POF due to the chemical reaction is particularly prevented and the deterioration of the transmission characteristics is very small.
- the plastic optical fiber is a refractive index distribution type optical fiber including a central portion made of a fluororesin and an acrylic resin covering the outer periphery thereof, wherein the fiber tensile strength member is
- the fiber tensile strength member is
- the combination of a sizing agent made of low-molecular-weight polyether contained in the aramide fiber and an acrylic resin coating the outer periphery of the plastic optical fiber reduces embrittlement due to the above-mentioned chemical reaction.
- the combination of the plastic optical fiber and the fiber tensile strength member can be particularly preferably used in the present invention because the combination easily occurs.
- the fiber tensile strength member removes a sizing agent contained in the fiber tensile strength member. It is characterized in that it has been processed.
- the plastic optical fiber cord includes Since the sizing agent is removed, the reaction between the sizing agent and POF can be greatly suppressed. That is, embrittlement of the outer periphery of the POF due to a chemical reaction can be prevented, so that a plastic optical fiber cord with little deterioration in transmission characteristics can be provided.
- the content of the sizing agent after the removal treatment is 200 ppm or less in terms of a mass ratio to the entire fiber tensile strength member. According to this, it is possible to provide a plastic optical fiber cord in which embrittlement of the outer periphery of the POF due to a chemical reaction is particularly prevented and deterioration of transmission characteristics is very small.
- the plastic optical fiber is a refractive index distribution type optical fiber comprising a central portion made of a fluororesin and an acrylic resin covering the outer periphery thereof, wherein the fiber tensile strength member is
- the fiber tensile strength member is
- the combination of a sizing agent made of low-molecular-weight polyether contained in the aramide fiber and an acrylic resin coating the outer periphery of the plastic optical fiber reduces embrittlement due to the above-mentioned chemical reaction.
- the combination of the plastic optical fiber and the fiber tensile strength member can be particularly preferably used in the present invention because the combination easily occurs.
- a third aspect of the present invention is a method for producing a plastic optical fiber cord having one or a plurality of plastic optical fibers and a fiber tensile strength member, the method comprising: removing a sizing agent from the fiber tensile strength member; Encoding using one or a plurality of plastic optical fibers and a fiber tensile strength material from which a sizing agent has been removed.
- the method for producing a plastic optical fiber cord of the third aspect since the treatment for removing the sizing agent contained in the fiber tensile strength member is performed, the reaction between the sizing agent and POF can be significantly suppressed. That is, since the embrittlement of the outer periphery of the POF due to the chemical reaction can be prevented, it is possible to provide a plastic optical fiber cord with little deterioration in transmission characteristics.
- the content of the sizing agent after the removal treatment is 200 ppm or less in terms of a mass ratio to the entire fiber tensile strength member. According to this manufacturing method, it is possible to provide a plastic optical fiber cord in which the embrittlement of the outer periphery of the POF due to a chemical reaction is particularly prevented, and the deterioration of transmission characteristics is very small.
- the plastic optical fiber is a refractive index distribution type optical fiber comprising a central portion made of a fluororesin and an acryl-based resin covering the outer periphery thereof, wherein the fiber tensile strength member is
- the fiber tensile strength member is
- the combination of a sizing agent made of low-molecular-weight polyether contained in the aramide fiber and an acrylic resin coating the outer periphery of the plastic optical fiber reduces embrittlement due to the above-mentioned chemical reaction.
- the combination of the plastic optical fiber and the fiber tensile strength member can be particularly preferably used in the present invention because the combination easily occurs.
- a plastic optical fiber cord having one or more plastic optical fibers and a fiber tensile member containing a sizing agent, wherein the bundle of the single or plural plastic optical fibers is provided.
- the outer periphery of the plastic optical fiber and the fiber tensile member are wound around the sizing agent with no gap by a tape-shaped material made of a material that is chemically stable with respect to the sizing agent. It is characterized by having an isolated configuration.
- the plastic optical fiber and the fiber tensile member are separated by the tape-shaped material wound around the outer periphery of the bundle of the single or plural plastic optical fibers.
- a fifth aspect of the present invention is a plastic optical fiber cord having a single or a plurality of plastic optical fibers and a fiber tensile member containing a sizing agent, wherein the outer circumference of each of the single or the plurality of plastic optical fibers is The sizing agent is coated with a resin that is chemically stable to the sizing agent, and the plastic optical fiber and the fiber tensile strength member are separated from each other via the resin.
- the plastic optical fiber and the fiber tensile member are separated by the resin coated on the outer periphery of each of the single or plural plastic optical fibers. Therefore, penetration of the sizing agent into the POF can be blocked. Therefore, plastic light with little deterioration of transmission characteristics A fiber cord can be provided.
- the plastic optical fiber is a refractive index distribution type optical fiber comprising: a central portion made of a fluororesin; and an acrylic resin covering an outer periphery thereof.
- the fiber strength member is an aramide fiber.
- the combination of the sizing agent made of low molecular weight polyether contained in the aramide fiber and the acrylic resin covering the outer periphery of the plastic optical fiber is liable to cause embrittlement due to the above-mentioned chemical reaction.
- a combination of an optical fiber and a fiber tensile strength member can be particularly preferably used in the present invention.
- FIG. 1 is a cross-sectional view showing one embodiment of a plastic optical fiber cord according to the first, second, and third aspects of the present invention.
- FIG. 2 is a sectional view showing one embodiment of a plastic optical fiber cord according to a fourth aspect of the present invention.
- FIG. 3 is a sectional view showing one embodiment of a plastic optical fiber cord according to the fifth aspect of the present invention.
- FIG. 1 is a cross-sectional view showing one embodiment of a plastic optical fiber cord according to the first, second, and third aspects of the present invention.
- this plastic optical fiber cord 10 is composed of two P ⁇ Fs 1 arranged at the center and a sizing agent arranged adjacently so as to surround the outer periphery of the POF 1.
- This is a two-core cord composed of a fiber tensile strength member 2a substantially free of the above, and a covering portion 3 that is coated on the outer periphery of the fiber tensile strength member 2a.
- the structure of the POF 1 includes a central portion composed of a core and a clad, and a central covering portion (outer periphery of the POF) that covers the outer periphery of the central portion.
- the structure at the center may be a step index type (SI type) structure or a refractive index distribution (Graded Index) type (GI type) structure.
- SI type step index type
- GI type refractive index distribution
- the material of the central portion is not particularly limited, and examples thereof include a fluororesin, a polymethyl methacrylate (PMMA) resin, a fluorinated PMMA resin, and a deuterated PMMA resin. Above all, amorphous transparent fluororesin is preferable, and amorphous transparent fluororesin having a ring structure in the main chain is most preferable because of its low transmission loss, wide usable wavelength range of light, and wide practical usable temperature range. .
- the expression that the material of the central part of the POF is, for example, a fluororesin, and that the central part of P ⁇ F is made of a fluororesin means that the base resin constituting the central part is the fluororesin. . That is, the material of the central portion is an optical resin composition containing a refractive index adjusting agent (dopant) and the like in addition to the base fluororesin.
- PMMA resin is preferable in terms of price, strength, and the like. Further, PMMA resin is suitable as an object of the present invention because it is easily affected by the sizing agent.
- the outer diameter of the POF 1 is preferably 400 to 1000 m. Further, the number of P OF 1 arranged in the code is preferably one, two or four.
- aramide fiber As the fiber of the fiber tensile strength member 2a, aramide fiber, polyethylene terephthalate (PET) fiber, carbon fiber, glass fiber and the like can be used. Of these, the use of aramide fibers is preferred in terms of rigidity, flexibility, and prevention of fiber breakage due to repeated bending. Of the aramide fibers, those having a high Young's modulus, so-called high modulus specification, are preferable because they can withstand a high load as a tensile strength member with a small number and can be designed with a thin cord.
- the high modulus specification means that as an initial modulus, a code modulus measured by ASTM-D 885M is preferably not less than 100 OGPa.
- the fiber tensile strength body means not a metal tensile strength body such as a steel wire but a fiber-like tensile strength body.
- these fibers contain a sizing agent to prevent the fine fibers from being separated and to maintain good workability. That is, the sizing agent is usually required when the fiber strength members such as aramide fibers are bunched and made into a yarn. It is said that the content of the sizing agent contained in the commercially available fiber tensile strength material is preferably about 0.1 to 1% of the total mass including the sizing agent.
- the covering portion 3 for example, polyvinyl chloride, flame-retardant polyethylene, or the like can be used and is not particularly limited. It is preferable that the thickness of the covering portion 3 is 0.2 to 1.0 mm.
- the outer diameter of the covering portion 3, that is, the diameter of the cord is preferably 1 to 5 mm.
- this embodiment is characterized in that a fiber tensile strength material substantially not containing a sizing agent is used as the fiber tensile strength material 2a.
- the fiber tensile strength member 2a is characterized in that a fiber tensile strength member that has been subjected to a treatment for removing a sizing agent contained in the fiber tensile strength member is used.
- the covering portion 3 is covered and coded using the POF 1 and the fiber strength member 2 a. To manufacture optical fiber cords.
- the method for removing the sizing agent is not particularly limited, and an appropriate removing method may be applied according to the type of the sizing agent used.
- an appropriate removing method it is preferable to perform heat treatment and Z or warm water treatment.
- the heat treatment and the hot water treatment may be performed alone or in combination.
- heat treatment is preferably performed.
- the heating temperature is from 300 to 600, more preferably from 400 to 600, and particularly preferably from 450 to 52 ° C.
- the heating time is preferably 2 to 9 seconds, and more preferably 5 to 9 seconds in the case of continuous treatment.
- the fiber tensile strength material may be subjected to a patch treatment or a continuous treatment.
- Batch processing is, for example, put in a 300 oven for about 10 minutes to 1 hour.
- To perform the heat treatment it can be treated by passing through a tunnel furnace, for example, immediately after the fiber tensile strength material is unwound and coded together with the POF.
- a tunnel furnace for example, immediately after the fiber tensile strength material is unwound and coded together with the POF.
- the continuous treatment method for example, it is possible to pass through a tunnel furnace having a length of about 3 to 6 m maintained at 500 ° C. for about 2 to 9 seconds.
- a sizing agent such as polyether is hydrophilic, it is preferable to perform a hot water treatment.
- a treatment condition in this case it is preferable to perform the immersion treatment at 30 to 100 ° C. for 10 minutes to 24 hours. After the immersion treatment, it is preferable to perform a drying treatment for at least 105 ⁇ 12 hours to remove water.
- the content of the sizing agent is preferably not more than 200 ppm, more preferably not more than 150 ppm in terms of mass ratio to the whole fiber tensile strength material.
- the content of the sizing agent is 200 ppm or less, embrittlement of POF due to a reaction between the sizing agent and the P ⁇ F center coating portion can be suppressed, and an increase in transmission loss can be suppressed, which is preferable. That is, it is preferable to produce a plastic optical fiber cord using a fiber tensile strength body having a small sizing agent content or using a fiber tensile strength body that has been subjected to a sizing agent removal treatment. From the viewpoint of cost and workability, it is most preferable to use a fiber tensile strength material in which the sizing agent content is reduced by removing the sizing agent.
- the content of the sizing agent means the content of the sizing agent in the fiber tensile strength material used for encoding. That is, when the sizing agent is removed, the content after the removal process, that is, the remaining amount is defined as the sizing agent content.
- the reference amount for the measurement is the entire fiber tensile strength member, and is the total mass of the fiber tensile strength member and (if included) the sizing agent.
- the sizing agent content can be determined by thermogravimetric / differential thermal analysis (TGZDTA), differential scanning calorimetry (DSC), or extraction.
- TTZDTA thermogravimetric / differential thermal analysis
- DSC differential scanning calorimetry
- extraction method specifically, a fiber tensile strength material is extracted using a Soxhlet extractor. Water or heavy water (extraction time: 10 hours) and acetone (extraction time: 6 hours) can be used as the solvent for the extraction.
- the amount of extraction is calculated by precisely weighing the extracted sizing agent by removing the solvent from the extract after the extraction treatment by evaporation. Alternatively, the solvent may be removed from the extract after the extraction treatment by evaporation, and measurement may be performed by proton NMR. Of these quantification methods, Most preferred is an extraction method in which the sizing agent extracted using acetone as an extraction solvent is weighed to calculate the amount of extraction.
- FIG. 2 is a sectional view showing an embodiment of the plastic optical fiber cord according to the fourth aspect of the present invention.
- the same parts as those described in FIG. 1 will be denoted by the same reference numerals, and the description thereof will be omitted.
- the point that the outer periphery of the aggregate of the two plastic optical fiber cords 1 is wound tightly with tape 4 and the fiber tensile strength member 2 b is disposed around the periphery thereof is as follows. This is different from the plastic optical fiber cord 10 in FIG. It is not necessary to remove the sizing agent from the fiber tensile strength member 2b, and the removal treatment can be omitted.
- the outer periphery of the POF 1 (the center covering portion) is wound with the fiber strength member 2b by winding this tape 4 without any gap. It is isolated. Therefore, the center covering portion of POF1 does not come into direct contact with the sizing agent, so that the sizing agent can be prevented from reacting with POF1. Therefore, a stable transmission characteristic can be obtained by preventing chemical deterioration of the surface of the POF1.
- the tape 4 may be a tape made of a material that is chemically stable to the sizing agent, and for example, polyethylene terephthalate or the like can be used.
- the width and thickness of the tape 4 can be appropriately selected, but the width is preferably 2.5 to 10 mm.
- the thickness may be a minimum thickness that can maintain chemical stability, specifically, a thickness of 5 to 100 / m is preferable, and a uniform thickness in the longitudinal direction is preferable. If the thickness is greater than the above range or the thickness is not uniform in the longitudinal direction, microbends will occur in the POF due to changes in the environmental temperature, etc. due to the difference in the linear expansion coefficient between the POF and the tape-like material. As a result, transmission loss may increase, which is not preferable.
- the winding pitch is preferably double winding or the like, and the tape 4 preferably has some elasticity in the longitudinal direction.
- FIG. 3 is a sectional view showing an embodiment of the plastic optical fiber cord according to the fifth aspect of the present invention.
- this plastic optical fiber cord 30 the outer circumference of each of the two plastic optical fiber cords 1 is covered with a coating resin 5. This is different from the plastic optical fiber cord 20 shown in FIG. 2 in that the fiber tensile strength member 2b is disposed around the periphery.
- the coating resin 5 may be a resin made of a material that is chemically stable with respect to the sizing agent, such as an acrylic UV curable resin, a silicon UV curable resin, a silicon sealing agent, and an epoxy resin. Can be used.
- the coating thickness can be appropriately set according to the combination of the type of the sizing agent and the material of the outer periphery of the POF 1.
- the thickness is preferably 10 to 50 m. If the coating thickness is less than 10 m, the reaction between the sizing agent component and the outer resin of P ⁇ F1 cannot be completely prevented, and transmission loss due to chemical change increases, which is not preferable. If it exceeds 50 m, microbends will occur in the optical fiber due to changes in the ambient temperature, etc. due to the difference in the linear expansion coefficient between the coating resin and POF, as in the case of Fig. 2 above. This is not preferable because it may increase transmission loss.
- a plastic optical fiber cord having the structure shown in Fig. 1 was manufactured using the following materials.
- POF 1 is a fluororesin-based POF (fiber outer diameter 500 m, core diameter 120 ⁇ , clad diameter 250 m, outer circumference of clad is coated with acrylic resin so that fiber outer diameter is 500 m, NA is 0.185, manufactured by Asahi Glass Co., Ltd .: trade name "Lukina”) was used.
- aramide fibers (1270 decitex, using 4 strands) containing a sizing agent are treated in a rolled state at 70 ° C for 24 hours with hot water to remove the sizing agent. And used as fiber tensile strength body 2b.
- the residual amount of the sizing agent was measured by weighing after Soxhlet extraction (the solvent was acetone and the extraction time was 6 hours), and it was 103 ppm.
- the covering part 3 is made of soft pinyl chloride resin and has an inner diameter of 2.0 mm and an outer diameter of 2.0 mm. Coating was performed so that the diameter was 3.0 mm.
- Example 1 the aramide fiber containing the sizing agent was subjected to a heat treatment at 400 ° C. for 9 seconds at 400 ° C. between the feeding portion and the die in the forming step of the coating portion 3 to remove the sizing agent,
- a plastic optical fiber cord having a configuration as shown in FIG. 1 was manufactured under the same conditions as in Example 1 except that it was used as the tensile member 2b.
- the residual amount of sizing agent was less than 84 ppm.
- Example 1 except that the aramide fiber containing the sizing agent was subjected to a heat treatment at 600 ° C. for 2 seconds between the feeding part and the die in the forming step of the coating part 3 to remove the sizing agent.
- Example 1 except that the aramide fiber containing the sizing agent was subjected to a heat treatment at 450 ° C. for 2 seconds at 450 ° C. from the feeding part to the die in the molding step of the coating part 3 to remove the sizing agent.
- a plastic optical fiber cord having a configuration as shown in FIG. 2 was manufactured.
- P0F1 and the covering portion 3 used were the same as those in Example 1.
- the fiber strength member 2b used in Example 1 was an aramide fiber that had not been subjected to the sizing agent removal treatment.
- As the tape 4 a polyethylene terephthalate tape having a thickness of 10 / xm and a tape width of 4 mm was used, and two P ⁇ F 1 aggregates were covered with no gap at double pitch.
- the coating 3 was coated such that the inner diameter was 2.0 mm and the outer diameter was 3.0 mm.
- a plastic optical fiber cord having a configuration as shown in FIG. 3 was manufactured.
- P0F1 and the covering portion 3 used were the same as those in Example 1.
- the fiber strength member 2b used in Example 1 was an aramide fiber that had not been subjected to the sizing agent removal treatment.
- As the coating resin 5, each of the POFs 1 was coated with an acrylic UV curable resin in a thickness of 1 O m and UV cured.
- the coating portion 3 was coated so that the inner diameter was 2.2 mm and the outer diameter was 3.2 mm.
- Example 1 a plastic optical fiber cord having a configuration as shown in FIG. 1 was used under the same conditions as in Example 1 except that the aramide fiber containing the sizing agent was used as it was and the sizing agent was not removed. Manufactured. The residual amount of the sizing agent was 598 ppm.
- Example 14 As shown in Table 1, the sizing agent was not removed in Example 14 in which the sizing agent was removed and in Example 56 in which the POF 1 was isolated from the fiber tensile strength member 2b. It can be seen that the loss change is smaller than in Comparative Example 1.
- Example 14 compared to Example 4 in which heat treatment was performed at 450 ° C. for 2 seconds, Example 2 in which hot water treatment was performed was performed in Example 2 in which heat treatment was performed at 400 ° C. for 9 seconds. It can be seen that Example 3 in which the heat treatment was performed at 600 for 2 seconds was less in the sizing agent remaining and less affected by loss change. This indicates that it is more preferable to remove the remaining amount of the sizing agent to 200 ppm or less.
- the sizing agent used in the fiber tensile strength member is removed or the POF and the fiber tensile strength member are separated from each other, so that the sizing agent and the outer periphery of the POF are separated. Chemical degradation due to contact is suppressed. As a result, a plastic optical fiber cord having stable transmission characteristics can be provided.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
Description
Claims
Priority Applications (1)
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JP2005506226A JP4320659B2 (ja) | 2003-05-15 | 2004-05-12 | プラスチック光ファイバコード及びその製造方法 |
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JP2003-137888 | 2003-05-15 | ||
JP2003137888 | 2003-05-15 |
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WO2004102243A1 true WO2004102243A1 (ja) | 2004-11-25 |
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PCT/JP2004/006713 WO2004102243A1 (ja) | 2003-05-15 | 2004-05-12 | プラスチック光ファイバコード |
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Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6246413U (ja) * | 1985-09-07 | 1987-03-20 | ||
JPH0467004A (ja) * | 1990-07-05 | 1992-03-03 | Sumitomo Electric Ind Ltd | 押出成形品の製造方法 |
JPH06148473A (ja) * | 1992-10-30 | 1994-05-27 | Hitachi Cable Ltd | 加工性に優れた高張力プラスチック光ファイバコード |
JPH07270650A (ja) * | 1994-03-31 | 1995-10-20 | Toray Ind Inc | プラスチック光ファイバコード |
JPH085848A (ja) * | 1994-04-18 | 1996-01-12 | Yasuhiro Koike | 屈折率分布型光学樹脂材料及びその製造方法 |
JPH08304635A (ja) * | 1995-04-28 | 1996-11-22 | Yasuhiro Koike | プラスチック光ファイバーコード及びバンドルファイバー |
JPH09243886A (ja) * | 1996-03-06 | 1997-09-19 | Fujikura Ltd | ノンメタリック光ファイバケーブル |
JPH1096840A (ja) * | 1996-09-25 | 1998-04-14 | Sumitomo Electric Ind Ltd | プラスチック光ファイバコードおよびその製造方法 |
JPH10332994A (ja) * | 1997-06-03 | 1998-12-18 | Sumitomo Wiring Syst Ltd | 光ファイバコード及びその製造方法並びに光ファイバコードに用いられるテープ状補強体及びその製造方法 |
-
2004
- 2004-05-12 JP JP2005506226A patent/JP4320659B2/ja not_active Expired - Fee Related
- 2004-05-12 WO PCT/JP2004/006713 patent/WO2004102243A1/ja active Application Filing
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6246413U (ja) * | 1985-09-07 | 1987-03-20 | ||
JPH0467004A (ja) * | 1990-07-05 | 1992-03-03 | Sumitomo Electric Ind Ltd | 押出成形品の製造方法 |
JPH06148473A (ja) * | 1992-10-30 | 1994-05-27 | Hitachi Cable Ltd | 加工性に優れた高張力プラスチック光ファイバコード |
JPH07270650A (ja) * | 1994-03-31 | 1995-10-20 | Toray Ind Inc | プラスチック光ファイバコード |
JPH085848A (ja) * | 1994-04-18 | 1996-01-12 | Yasuhiro Koike | 屈折率分布型光学樹脂材料及びその製造方法 |
JPH08304635A (ja) * | 1995-04-28 | 1996-11-22 | Yasuhiro Koike | プラスチック光ファイバーコード及びバンドルファイバー |
JPH09243886A (ja) * | 1996-03-06 | 1997-09-19 | Fujikura Ltd | ノンメタリック光ファイバケーブル |
JPH1096840A (ja) * | 1996-09-25 | 1998-04-14 | Sumitomo Electric Ind Ltd | プラスチック光ファイバコードおよびその製造方法 |
JPH10332994A (ja) * | 1997-06-03 | 1998-12-18 | Sumitomo Wiring Syst Ltd | 光ファイバコード及びその製造方法並びに光ファイバコードに用いられるテープ状補強体及びその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
JP4320659B2 (ja) | 2009-08-26 |
JPWO2004102243A1 (ja) | 2006-07-13 |
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