WO2022131099A1 - 光ファイバテープ心線 - Google Patents
光ファイバテープ心線 Download PDFInfo
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- WO2022131099A1 WO2022131099A1 PCT/JP2021/045101 JP2021045101W WO2022131099A1 WO 2022131099 A1 WO2022131099 A1 WO 2022131099A1 JP 2021045101 W JP2021045101 W JP 2021045101W WO 2022131099 A1 WO2022131099 A1 WO 2022131099A1
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- WIPO (PCT)
- Prior art keywords
- optical fiber
- core wire
- adhesive portion
- adhesive
- tape core
- Prior art date
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 135
- 239000004840 adhesive resin Substances 0.000 claims abstract description 54
- 229920006223 adhesive resin Polymers 0.000 claims abstract description 54
- 239000000853 adhesive Substances 0.000 claims description 75
- 230000001070 adhesive effect Effects 0.000 claims description 74
- 239000002131 composite material Substances 0.000 claims description 18
- 238000012360 testing method Methods 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 32
- 229920005989 resin Polymers 0.000 description 21
- 239000011347 resin Substances 0.000 description 21
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Images
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
- G02B6/4403—Optical cables with ribbon structure
Definitions
- This disclosure relates to an optical fiber tape core wire. This disclosure claims priority based on Japanese Patent Application No. 2020-210491 filed on December 18, 2020, and incorporates all the contents described in the application.
- Patent Document 1 and Patent Document 2 disclose a so-called intermittently connected optical fiber tape core wire.
- the optical fiber tape core wire of Patent Document 2 also has adhesive members coated on both the upper surface side and the lower surface side of the optical fiber tape core wire. Further, Patent Document 2 discloses that the thickness of a part of the adhesive member is set to a thickness that protrudes from the tangent line passing through the surface of each single-core coated optical fiber at least in the central portion thereof.
- the optical fiber tape core wire is Between some or all of the optical fiber core wires arranged in parallel in the width direction orthogonal to the longitudinal direction, the adjacent optical fiber core wires are bonded with an adhesive resin.
- the non-adhesive portion where the adjacent optical fiber core wires are not bonded with the adhesive resin is an intermittently connected optical fiber tape core wire provided intermittently in the longitudinal direction.
- the adhesive portion is provided on one side of the optical fiber tape core wire, and is provided on one side. A part of the adhesive portion protrudes from the tangent line passing through the surface of the adjacent optical fiber core wire on the one side thereof. In the longitudinal direction, at least one of the longitudinal ends of the adhesive portion has a larger protrusion height than the central portion of the adhesive portion.
- the composite elastic modulus of the adhesive resin at 23 ° C. is 0.5 GPa or more and 6.0 GPa or less.
- FIG. 1 is a schematic plan view showing an optical fiber tape core wire according to an embodiment.
- FIG. 2 is a schematic cross-sectional view of an optical fiber core wire according to an embodiment.
- FIG. 3 is a schematic cross-sectional view of an adhesive portion in the optical fiber tape core wire according to the embodiment.
- FIG. 4 is a schematic side view of an adhesive portion in the optical fiber tape core wire according to the embodiment.
- the optical fiber tape core wire described in Patent Document 1 has about the same amount of adhesive resin on both sides of the optical fiber tape core wire.
- the thickness of the adhesive resin is set so that it does not come into contact with other optical fiber strands. Therefore, when a force is applied to roll the optical fiber tape core wire in the cross-sectional direction and bend it when it is stored in the optical cable, the bent outer adhesive resin is broken or the adhesive resin and the optical fiber wire are peeled off. Is likely to occur. As a result, there is a risk that the optical fiber strands will come apart.
- the optical fiber tape core wire described in Patent Document 2 projects the thickness of a part of the bonded portion on both sides of the optical fiber tape core wire from the tangent line passing through the surface of each single-core coated optical fiber at least at the center portion thereof. Since the thickness is set, the cross-sectional area of the optical fiber tape core wire increases, which is disadvantageous in terms of increasing the density of the optical cable.
- the optical fiber core wire is loosened by suppressing an increase in the cross-sectional area of the optical fiber tape core wire and making it difficult for the adhesive resin to be broken or the adhesive resin and the optical fiber core wire to be separated from each other. It is to reduce the fear.
- the optical fiber tape core wire according to one aspect of the present disclosure is Between some or all of the optical fiber core wires arranged in parallel in the width direction orthogonal to the longitudinal direction, the adjacent optical fiber core wires are bonded with an adhesive resin.
- the non-adhesive portion where the adjacent optical fiber core wires are not bonded with the adhesive resin is an intermittently connected optical fiber tape core wire provided intermittently in the longitudinal direction.
- the adhesive portion is provided on one side of the optical fiber tape core wire, and is provided on one side. A part of the adhesive portion protrudes from the tangent line passing through the surface of the adjacent optical fiber core wire on the one side thereof.
- the adhesive portion In the longitudinal direction, at least one of the longitudinal ends of the adhesive portion has a larger protrusion height than the central portion of the adhesive portion.
- the composite elastic modulus of the adhesive resin at 23 ° C. is 0.5 GPa or more and 6.0 GPa or less.
- the adhesive resin is usually interrupted when the adhesive resin is applied, so that the thickness of the adhesive resin is thinner than that of the central portion of the adhesive portion in the longitudinal direction. Then, the bonded portion is likely to be broken or peeled off from the longitudinal end portion where stress is likely to be concentrated.
- the adhesive portion since at least one of the longitudinal ends of the adhesive portion is thicker than the central portion of the adhesive portion in the longitudinal direction, the adhesive portion is suppressed from being broken or peeled from the longitudinal end portion, and light is applied. The risk of the fiber core wire coming loose can be reduced. Further, since the composite elastic modulus of the adhesive resin is 0.5 GPa or more, the adhesive resin is less likely to be broken, and the composite elastic modulus is 6.0 GPa or less, so that transmission loss at a low temperature is suppressed. can do. Further, since the adhesive resin is provided only on one surface of the optical fiber tape core wire, it is possible to suppress an increase in the cross-sectional area of the optical fiber tape core wire and contribute to increasing the density of the optical cable.
- the tearing force when tearing the bonded portion which is measured based on the tearing test specified in JIS C 6838: 2019, is preferably 0.005N or more and 0.200N or less. According to this configuration, since the tearing force of the adhesive portion is 0.005 N or more, the adhesive resin is less likely to be broken and the risk of the optical fiber core wire being loosened can be further reduced. In addition, since the tearing force of the adhesive portion is 0.200 N or less, the adhesive resin does not easily remain on the optical fiber core wire when the operator tears the adhesive portion, and the optical fiber core wire can be easily inserted into the protective tube. It is possible to suppress a decrease in workability in the subsequent process.
- the maximum value of the height of the protrusion from the tangent in the bonded portion is preferably 10 ⁇ m or more and 100 ⁇ m or less. According to this configuration, since the maximum value of the protrusion height is set to 10 ⁇ m or more and the amount of the adhesive resin used and the cross-sectional area of the adhesive resin are increased, the adjacent optical fiber core wires can be adhered more firmly. As a result, the adhesive resin is less likely to be broken by an external force or the like, and the risk of the optical fiber core wire being loosened can be further reduced. Further, since the maximum value of the protrusion height is 100 ⁇ m or less, deterioration of transmission loss at low temperature can be suppressed.
- the optical fiber tape core wire is In the width direction, it is preferable that each of the widthwise ends of the bonded portion is located outside the center of each of the adjacent optical fiber core wires. According to this configuration, a sufficient amount of adhesive resin is used, and the contact area between the adhesive resin and the optical fiber core wire is increased in the width direction. Therefore, the adhesive resin is destroyed or the adhesive resin and the optical fiber are broken. It is possible to further reduce the possibility that the optical fiber core wire is separated by making it more difficult to separate from the core wire.
- FIG. 1 is a schematic plan view showing an optical fiber tape core wire 1 according to the present embodiment.
- the optical fiber tape core wire 1 includes a plurality of (12 in this example) optical fiber core wires 10 (including 10A and 10B).
- the plurality of optical fiber core wires 10 are arranged in parallel in the width direction W orthogonal to the longitudinal direction L.
- the optical fiber tape core wire 1 has an adhesive portion 2 in which adjacent optical fiber core wires 10 are adhered with an adhesive resin, and a non-adhesive portion 3 in which the adjacent optical fiber core wires 10 are not adhered with an adhesive resin. Is an intermittently connected optical fiber tape core wire provided intermittently along the longitudinal direction L.
- one independent optical fiber core wire 10 is bonded to every two cores by an adhesive resin, but the present invention is not limited to this, and every three or more cores. It may be adhered to. Further, the optical fiber tape core wire 1 may be formed by using a plurality of optical fiber core wires 10 of one core that are collectively coated with a coating resin and connected. Further, the place where the adhesive portion 2 and the non-adhesive portion 3 are intermittently provided may be between some optical fiber core wires 10 or between all optical fiber core wires 10.
- FIG. 2 is a schematic cross-sectional view of the optical fiber core wire 10 according to the present embodiment. Specifically, FIG. 2 is a schematic cross-sectional view when the optical fiber core wire 10 shown in FIG. 1 is cut in a plane including a thickness direction perpendicular to the longitudinal direction L and the width direction W.
- the optical fiber core wire 10 shown in FIG. 2 includes an optical fiber 11, a primary resin layer 12, a secondary resin layer 13, and a colored resin layer 14.
- the outer diameter of the optical fiber core wire 10 is not particularly limited, and may be, for example, about 200 ⁇ m, larger or smaller.
- the optical fiber 11 includes a core and a cladding.
- the optical fiber 11 is, for example, a glass fiber.
- the primary resin layer 12 covers the outer periphery of the optical fiber 11.
- the primary resin layer 12 is formed of, for example, a soft ultraviolet curable resin having a relatively low Young's modulus.
- the secondary resin layer 13 covers the outer periphery of the primary resin layer 12.
- the secondary resin layer 13 is formed of, for example, a hard ultraviolet curable resin having a relatively high Young's modulus.
- the colored resin layer 14 covers the outer periphery of the secondary resin layer 13.
- the colored resin layer 14 is a layer for improving the distinctiveness of the optical fiber core wire 10, and is formed of, for example, a colored ultraviolet curable resin.
- FIG. 3 is a schematic cross-sectional view of the adhesive portion 2 in the optical fiber tape core wire 1 according to the present embodiment.
- the optical fiber core wires 10A and 10B shown in FIG. 1 and the adhesive portion 2 formed between the optical fiber core wires 10A and 10B are cut in a plane including the thickness direction. It is a schematic cross-sectional view of the case.
- each layer included in the optical fiber core wires 10A and 10B is not shown.
- the adhesive portion 2 is formed by curing the adhesive resin.
- the type of the adhesive resin is not particularly limited as long as the composite elastic modulus satisfies the above-mentioned regulation, and for example, an acrylic ultraviolet curable resin or an epoxy ultraviolet curable resin can be used. Further, the adhesive resin may be a thermosetting resin.
- the composite elastic modulus at 23 ° C. after curing of the adhesive resin is 0.5 GPa or more and 6.0 GPa or less. Further, from the viewpoint of further preventing the adhesive resin from being broken or the like, the composite elastic modulus is preferably 1 GPa or more, and more preferably 2 GPa or more. Further, from the viewpoint of further suppressing transmission loss at low temperatures, the composite elastic modulus is preferably 4.5 GPa or less, and more preferably 3.0 GPa or less.
- the composite elastic modulus of the adhesive resin can be adjusted, for example, by the type of the adhesive resin, the molecular weight of the oligomer, the number of functional groups contained in the monomer, the compounding ratio thereof, and the like.
- the composite elastic modulus in the present specification is a composite elastic modulus in the thickness direction measured by a test method based on ISO14577.
- a part of the adhesive portion 2 projects upward from the tangent line T passing through the surfaces (contact points Q1 and contact Q2) on one side of the adjacent optical fiber core wires 10A and 10B.
- Such protrusions can be provided, for example, by adjusting the coating amount of the adhesive resin.
- one side means one above or below the line connecting the centers of adjacent optical fiber core wires.
- the maximum value H of the height of the protrusion from the tangent line T in the adhesive portion 2 is preferably 10 ⁇ m or more and 100 ⁇ m or less, and more preferably 20 ⁇ m or more and 50 ⁇ m or less.
- the maximum value H of the height of such protrusion can be provided, for example, by adjusting the coating amount of the adhesive resin.
- the height of the protrusion is maximized near the center of the adhesive portion 2 in the width direction W. That is, it is preferable that the height of the protrusion is maximized in the vicinity of the straight line P3 passing through the contact point between the optical fiber core wire 10A and the optical fiber core wire 10B. Further, it is preferable that the adhesive portion 2 is gently inclined in a curved shape from the vicinity of the center of the adhesive portion 2 toward the widthwise end portions 2a and 2b in the width direction W.
- each of the width direction ends 2a and 2b of the adhesive portion 2 is located outside the center of each of the adjacent optical fiber core wires 10A and 10B.
- the widthwise end portion 2a is located outside the straight line P1 connecting the center point O1 of the optical fiber core wire 10A and the contact point Q1.
- the widthwise end portion 2b is located outside the straight line P2 connecting the center point O2 of the optical fiber core wire 10B and the contact point Q2. The above-mentioned outside is the outside when the straight line P3 is set as the center.
- the two optical fiber core wires 10 located on the outermost side of them and the light located on the inner side of each of them are used.
- the widthwise end portion 2a and the widthwise end portion 2b are formed between the fiber core wire 10 and the fiber core wire 10.
- the distance U between the width direction end portion 2a and the center of the optical fiber core wire 10A (distance between the straight line P4 and the straight line P1 passing through the width direction end portion 2a and parallel to the straight line P1) U is, for example, an adhesive resin. From the viewpoint of further preventing the destruction of the fiber, it is preferably 1 / 10R (R is the radius of the optical fiber core wires 10A and 10B) or more, and more preferably 1 / 5R or more. Further, from the viewpoint of suppressing deterioration of transmission loss at low temperatures, the distance U is preferably 2 / 3R or less, and more preferably 1 / 2R or less.
- the distance U can be controlled, for example, by adjusting the viscosity and the coating amount at the time of coating the adhesive resin.
- the distance between the widthwise end portion 2b and the center of the optical fiber core wire 10B (the distance between the straight line passing through the widthwise end portion 2b and parallel to the straight line P2 and the straight line P2) is also the same.
- the tearing force of the adhesive portion 2 in the width direction W is preferably 0.005 N or more and 0.200 N or less, and more preferably 0.02 N or more and 0.10 N or less.
- the tearing force in the present specification is measured based on the tearing test (IEC60794-1-23: 2019 Ribbon tear test) specified in JIS C 6838: 2019.
- FIG. 4 is a schematic side view of the adhesive portion 2 in the optical fiber tape core wire 1 according to the present embodiment.
- the longitudinal direction L it is preferable that at least one of the longitudinal end portions 2c and 2d of the adhesive portion 2 has a larger protrusion height than the central portion of the adhesive portion 2.
- both the longitudinal end portions 2c and 2d of the adhesive portion 2 in the longitudinal direction L have a larger protrusion height than the central portion of the adhesive portion 2 in the longitudinal direction L. Is more preferable.
- the protrusions of the longitudinal end portions 2c and 2d of the adhesive portion 2 can be provided, for example, by adjusting the coating amount of the adhesive resin.
- the height of the protrusion of the adhesive portion 2 from the central portion is preferably 20 ⁇ m or more and 100 ⁇ m or less.
- the optical fiber tape core wire 1 was evaluated based on the twist test specified in IEC6074-1-2. The evaluation criteria are shown below. A: It does not come apart even 20 times with 180 ° twist. B: Disperse in 15 to 20 times with 180 ° twist. C: Disperse 10 times or more and 15 times or less with 180 ° twisting. D: Disperse 5 times or more and 10 times or less with 180 ° twisting. E: Disperse in 5 times or less with 180 ° twist.
- the tearing force was measured based on the tearing test specified in JIS C 6838 (2019). In the tear test, the sample length was 150 mm (set so that the adhesive portion came to the center), the distance between the chucks was 70 mm, and the tensile speed was 200 mm / min. Further, the peak value was used as the measured value, the measured values of five samples were obtained for each production example, and the arithmetic mean thereof was used as the tearing force.
- the optical fiber tape core wire 1 of Production Examples 1 to 42 was evaluated for loosening resistance and low temperature characteristics. The results are shown in Table 1.
- Table 1 Production Examples 8, 9, 14, 15, 20, 21, 26, 27, 32, 33, 38, and 39 are examples, and other production examples are comparative examples.
- Production Example 43 to Production Example 52 Using six types of adhesive resins having different composite elastic moduli, the tearing forces in the adhesive portion 2 were made different, and the optical fiber tape core wires 1 of Production Examples 43 to 52 were produced.
- the protrusion of the adhesive portion 2 from the tangent line T was “Yes”, and the distance U in the width direction W of the adhesive portion 2 was set to the range of 0 or more and 1 / 2R or less.
- the maximum value H of the height of the protrusion was set to about 30 ⁇ m.
- the longitudinal end portions 2c and 2d of the adhesive portion 2 in the longitudinal direction L are made to protrude from the central portion of the adhesive portion 2 in the longitudinal direction L.
- the loosening resistance of the optical fiber tape core wire 1 of Production Examples 43 to 52 was evaluated. The results are shown in Table 2.
- each of Production Example 43 to Production Example 52 is an example.
- Production Example 53 to Production Example 67 Using six types of adhesive resins having different composite elastic moduli, the maximum value H of the protrusion height in the adhesive portion 2 was made different, and the optical fiber tape core wire 1 of Production Example 53 to Production Example 67 was produced.
- the protrusion from the tangent line T in the adhesive portion 2 is “Yes”, and the distance U in the width direction W of the adhesive portion 2 is in the range of 0 or more and 1 / 2R or less.
- the tearing force was about 0.03N.
- the longitudinal end portions 2c and 2d of the adhesive portion 2 in the longitudinal direction L are made to protrude from the central portion of the adhesive portion 2 in the longitudinal direction L.
- the optical fiber tape core wire 1 of Production Examples 53 to 67 was evaluated for loosening resistance and low temperature characteristics. The results are shown in Table 3.
- each of Production Example 53 to Production Example 67 is an example.
- Production Example 68 to Production Example 87 Using six types of adhesive resins having different composite elastic moduli, the distance U in the width direction W was made different, and the optical fiber tape core wires 1 of Production Examples 68 to 87 were produced.
- the protrusion from the tangent line T in the adhesive portion 2 is “Yes”.
- the tearing force was about 0.03N.
- the maximum value H of the height of the protrusion was set to about 30 ⁇ m.
- the longitudinal end portions 2c and 2d of the adhesive portion 2 in the longitudinal direction L are made to protrude from the central portion of the adhesive portion 2 in the longitudinal direction L.
- the optical fiber tape core wire 1 of Production Examples 68 to 87 was evaluated for loosening resistance and low temperature characteristics.
- Optical fiber tape core wire 2 Adhesive portion 2a, 2b: Width direction end portion 2c, 2d: Longitudinal end portion 3: Non-adhesive portion 10, 10A, 10B: Optical fiber core wire 11: Optical fiber 12: Primary resin Layer 13: Secondary resin layer 14: Colored resin layer T: Tangent H: Maximum value of protrusion height L: Longitudinal direction W: Width direction U: Distance O1, O2: Center point P1, P2, P3, P4: Straight line Q1 , Q2: Contact R: Radius
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Abstract
Description
長手方向に直交する幅方向に並列に配置された複数の光ファイバ心線の一部又は全ての前記光ファイバ心線間において、隣接する光ファイバ心線間が接着樹脂で接着された接着部と、前記隣接する光ファイバ心線間が前記接着樹脂で接着されていない非接着部と、が前記長手方向に間欠的に設けられた間欠連結型の光ファイバテープ心線であって、
前記接着部は、前記光ファイバテープ心線の片面に設けられており、
前記接着部の一部は、前記隣接する光ファイバ心線の前記片面側における表面を通る接線より突出しており、
前記長手方向において、前記接着部の長手方向端部の少なくとも一方は、前記接着部の中央部よりも前記突出の高さが大きく、
前記接着樹脂の23℃における複合弾性率は、0.5GPa以上6.0GPa以下である。
特許文献1に記載の光ファイバテープ心線は、光ファイバテープ心線の両面側に同量程度の接着樹脂がある。また、接着樹脂の厚さを他の光ファイバ素線と接触しない程度の厚さにしている。そのため、光ケーブルへの収納時に光ファイバテープ心線をその断面方向に丸めて折り曲げるような力を加えた場合に、折り曲げられた外側の接着樹脂の破壊又は該接着樹脂と光ファイバ素線との剥離が生じやすい。その結果、光ファイバ素線がばらけてしまう恐れがあった。
本開示の構成によれば、光ファイバテープ心線の断面積の増大を抑制しつつ、接着樹脂の破壊又は該接着樹脂と光ファイバ心線との剥離を生じ難くして、光ファイバ心線がばらける恐れを低減させることができる。
本開示の実施態様を列記して説明する。
本開示の一態様に係る光ファイバテープ心線は、
長手方向に直交する幅方向に並列に配置された複数の光ファイバ心線の一部又は全ての前記光ファイバ心線間において、隣接する光ファイバ心線間が接着樹脂で接着された接着部と、前記隣接する光ファイバ心線間が前記接着樹脂で接着されていない非接着部と、が前記長手方向に間欠的に設けられた間欠連結型の光ファイバテープ心線であって、
前記接着部は、前記光ファイバテープ心線の片面に設けられており、
前記接着部の一部は、前記隣接する光ファイバ心線の前記片面側における表面を通る接線より突出しており、
前記長手方向において、前記接着部の長手方向端部の少なくとも一方は、前記接着部の中央部よりも前記突出の高さが大きく、
前記接着樹脂の23℃における複合弾性率は、0.5GPa以上6.0GPa以下である。
長手方向における接着部の長手方向端部は、通常、接着樹脂の塗布時に接着樹脂が途切れるため、長手方向における接着部の中央部よりも接着樹脂の厚みが薄くなる。そうすると、応力集中しやすい上記長手方向端部から接着部の破壊や剥離が生じやすくなる。上記構成は、長手方向において、接着部の長手方向端部の少なくとも一方を接着部の中央部よりも厚くしているので、該長手方向端部からの接着部の破壊や剥離を抑制し、光ファイバ心線がばらける恐れを低減させることができる。また、接着樹脂の複合弾性率を0.5GPa以上にしているので、接着樹脂の破壊等をさらに生じ難くするとともに、上記複合弾性率を6.0GPa以下としているので、低温での伝送ロスを抑制することができる。また、光ファイバテープ心線の片側の面にのみ接着樹脂を設けているので、光ファイバテープ心線の断面積の増大を抑制でき、光ケーブルの高密度化に資することができる。
JIS C 6838:2019に規定された引裂き試験に基づいて測定される、前記接着部を引裂くときの引裂き力は、0.005N以上0.200N以下であることが好ましい。
この構成によれば、接着部の引裂き力を0.005N以上としているため、接着樹脂の破壊等をさらに生じ難くし、光ファイバ心線がばらける恐れをさらに低減させることができる。また、接着部の引裂き力を0.200N以下としているため、作業者が接着部を引き裂いた際に接着樹脂が光ファイバ心線上に残り難く、光ファイバ心線の保護チューブへの挿入性等、その後の工程における作業性の低下を抑制できる。
前記接着部における前記接線からの前記突出の高さの最大値は、10μm以上100μm以下であることが好ましい。
この構成によれば、突出の高さの最大値を10μm以上として接着樹脂の使用量や接着樹脂の断面積を増やしているため、隣接する光ファイバ心線間をより強固に接着できる。結果として、外力等による接着樹脂の破壊をさらに生じ難くし、光ファイバ心線がばらける恐れをさらに低減させることができる。また、突出の高さの最大値を100μm以下としているため、低温での伝送ロスの悪化を抑制することができる。
前記幅方向において、前記接着部の幅方向端部の各々は、前記隣接する光ファイバ心線それぞれの中心よりも外側に位置することが好ましい。
この構成によれば、十分な量の接着樹脂を用いており、また、幅方向において接着樹脂と光ファイバ心線との接触面積を増やしているので、接着樹脂の破壊又は該接着樹脂と光ファイバ心線との剥離をさらに生じ難くして、光ファイバ心線がばらける恐れをさらに低減させることができる。
以下、本開示に係る実施の形態の例を、図面を参照しつつ説明する。なお、以下の説明では、異なる図面であっても同一又は相当の要素には同一の符号を付し、重複する説明を適宜省略する。また、以下の説明に用いる各図面では、各部材を認識可能な大きさとするために縮尺を適宜変更している。
以下、本開示に係る実施例を示して、本開示をさらに詳細に説明する。なお、本開示は、以下の実施例に限定されるものではない。
ナノインデンター(BRUKER製HYSITRON TI950 Tribolndenter)を用いて、ISO14577に基づいた試験方法で、硬化後の接着樹脂における厚さ方向の複合弾性率を求めた。押し込み深さは100nmとし、バーコビッチ圧子を用いて測定を行った。
幅方向Wにおける接着部2の接線Tからの突出の有無、突出の高さの最大値H、並びに、幅方向端部2a及び2cの位置は、レーザ顕微鏡を用いて測定した。長手方向Lにおける接着部2の長手方向端部2c及び2dの突出の有無についても同様である。
光ファイバテープ心線1について、IEC60794-1-2に規定された捻回試験に基づいて評価した。評価基準を以下に示す。
A:180°捻回で20回でもばらけない。
B:180°捻回で15回以上20回以下でばらける。
C:180°捻回で10回以上15回以下でばらける。
D:180°捻回で5回以上10回以下でばらける。
E:180°捻回で5回以下でばらける。
光ファイバテープ心線1に対して、常温(23℃)→-40℃→-60℃という1つのサイクルを6回繰り返すヒートサイクル試験を行った。23℃及び-60℃の環境下において、波長1.55μmの光を光ファイバテープ心線1に含まれる光ファイバ11に入射した場合における単位距離当たりの減衰量を測定し、2つの温度環境下での測定値の差で評価した。評価基準を以下に示す。
A:測定値の差が0.05dB/km以下
B:測定値の差が0.05dB/kmを超え、0.1dB/km以下
C:測定値の差が0.1dB/kmを超え、0.3dB/km以下
D:測定値の差が0.3dB/km以上
引裂き力は、JIS C 6838(2019)に規定された引裂き試験に基づいて測定した。該引裂き試験において、サンプル長は150mm(中央部に接着箇所がくるようセット)とし、チャック間距離は70mmとし、引張速度は200mm/minとした。また、ピーク値を測定値とし、各製造例について5つのサンプルの測定値を求め、その算術平均を引裂き力とした。
複合弾性率が異なる6種類の接着樹脂を用いて、接着部2における接線Tからの突出の有無や長手方向の端部の突出の有無を異ならせ、製造例1から製造例42の光ファイバテープ心線1を作製した。製造例1から製造例42において、引裂き力は、0.03N程度とした。また、突出の高さの最大値Hは、30μm程度とした。また、幅方向Wにおける距離Uは、0以上1/2R以下の範囲とした。
複合弾性率が異なる6種類の接着樹脂を用いて、接着部2における引裂き力を異ならせ、製造例43から製造例52の光ファイバテープ心線1を作製した。製造例43から製造例52において、接着部2における接線Tからの突出は「有」であり、接着部2の幅方向Wにおける距離Uは、0以上1/2R以下の範囲とした。また、突出の高さの最大値Hは、30μm程度とした。また、長手方向Lにおける接着部2の長手方向端部2c及び2dは、長手方向Lにおける接着部2の中央部よりも突出するようにした。製造例43から製造例52の光ファイバテープ心線1について、ばらけ耐性を評価した。結果を表2に示す。なお、製造例43から製造例52はいずれも実施例である。
複合弾性率が異なる6種類の接着樹脂を用いて、接着部2における突出の高さの最大値Hを異ならせ、製造例53から製造例67の光ファイバテープ心線1を作製した。製造例53から製造例67において、接着部2における接線Tからの突出は「有」であり、接着部2の幅方向Wにおける距離Uは、0以上1/2R以下の範囲とした。また、引裂き力は、0.03N程度とした。また、長手方向Lにおける接着部2の長手方向端部2c及び2dは、長手方向Lにおける接着部2の中央部よりも突出するようにした。製造例53から製造例67の光ファイバテープ心線1について、ばらけ耐性及び低温特性を評価した。結果を表3に示す。なお、製造例53から製造例67はいずれも実施例である。
複合弾性率が異なる6種類の接着樹脂を用いて、幅方向Wにおける距離Uを異ならせ、製造例68から製造例87の光ファイバテープ心線1を作製した。製造例68から製造例87において、接着部2における接線Tからの突出は「有」である。また、引裂き力は、0.03N程度とした。また、突出の高さの最大値Hは、30μm程度とした。また、長手方向Lにおける接着部2の長手方向端部2c及び2dは、長手方向Lにおける接着部2の中央部よりも突出するようにした。製造例68から製造例87の光ファイバテープ心線1について、ばらけ耐性及び低温特性を評価した。結果を表4に示す。表4において、距離Uが0R未満とは、幅方向Wにおける接着部2の幅方向端部2aが直線P1よりも内側に位置し、幅方向端部2bが直線P2よりも内側に位置することを意味する。なお、製造例68から製造例87はいずれも実施例である。
2:接着部
2a,2b:幅方向端部
2c,2d:長手方向端部
3:非接着部
10,10A,10B:光ファイバ心線
11:光ファイバ
12:プライマリ樹脂層
13:セカンダリ樹脂層
14:着色樹脂層
T:接線
H:突出の高さの最大値
L:長手方向
W:幅方向
U:距離
O1,O2:中心点
P1,P2,P3,P4:直線
Q1,Q2:接点
R:半径
Claims (4)
- 長手方向に直交する幅方向に並列に配置された複数の光ファイバ心線の一部又は全ての前記光ファイバ心線間において、隣接する光ファイバ心線間が接着樹脂で接着された接着部と、前記隣接する光ファイバ心線間が前記接着樹脂で接着されていない非接着部と、が前記長手方向に間欠的に設けられた間欠連結型の光ファイバテープ心線であって、
前記接着部は、前記光ファイバテープ心線の片面に設けられており、
前記接着部の一部は、前記隣接する光ファイバ心線の前記片面側における表面を通る接線より突出しており、
前記長手方向において、前記接着部の長手方向端部の少なくとも一方は、前記接着部の中央部よりも前記突出の高さが大きく、
前記接着樹脂の23℃における複合弾性率は、0.5GPa以上6.0GPa以下である、
光ファイバテープ心線。 - JIS C 6838:2019に規定された引裂き試験に基づいて測定される、前記接着部を引裂くときの引裂き力は、0.005N以上0.200N以下である、
請求項1に記載の光ファイバテープ心線。 - 前記接着部における前記接線からの前記突出の高さの最大値は、10μm以上100μm以下である、
請求項1又は請求項2に記載の光ファイバテープ心線。 - 前記幅方向において、前記接着部の幅方向端部の各々は、前記隣接する光ファイバ心線それぞれの中心よりも外側に位置する、
請求項1から請求項3のいずれか一項に記載の光ファイバテープ心線。
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Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003241042A (ja) * | 2002-02-20 | 2003-08-27 | Sumitomo Electric Ind Ltd | 光ファイバテープ心線の製造方法および製造装置 |
JP2012208312A (ja) * | 2011-03-30 | 2012-10-25 | Sumitomo Electric Ind Ltd | 光ファイバテープ心線の製造装置および製造方法 |
JP2013182157A (ja) * | 2012-03-02 | 2013-09-12 | Fujikura Ltd | 光ファイバテープ心線及びその光ファイバテープ心線を収納した光ファイバケーブル |
JP2016133607A (ja) | 2015-01-19 | 2016-07-25 | 古河電気工業株式会社 | 光ファイバテープ心線、光ファイバケーブル |
JP2016146003A (ja) | 2016-05-20 | 2016-08-12 | 日本電信電話株式会社 | 間欠接着型光ファイバテープおよびこれを用いた光ケーブル |
JP2017062431A (ja) * | 2015-09-25 | 2017-03-30 | 住友電気工業株式会社 | 光ファイバテープ心線 |
US20190049681A1 (en) * | 2017-08-08 | 2019-02-14 | Corning Research & Development Corporation | Rollable optical fiber ribbon with low attenuation, large mode field diameter optical fiber and cable |
JP2021012269A (ja) * | 2019-07-05 | 2021-02-04 | 古河電気工業株式会社 | 光ファイバテープ心線 |
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Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003241042A (ja) * | 2002-02-20 | 2003-08-27 | Sumitomo Electric Ind Ltd | 光ファイバテープ心線の製造方法および製造装置 |
JP2012208312A (ja) * | 2011-03-30 | 2012-10-25 | Sumitomo Electric Ind Ltd | 光ファイバテープ心線の製造装置および製造方法 |
JP2013182157A (ja) * | 2012-03-02 | 2013-09-12 | Fujikura Ltd | 光ファイバテープ心線及びその光ファイバテープ心線を収納した光ファイバケーブル |
JP2016133607A (ja) | 2015-01-19 | 2016-07-25 | 古河電気工業株式会社 | 光ファイバテープ心線、光ファイバケーブル |
JP2017062431A (ja) * | 2015-09-25 | 2017-03-30 | 住友電気工業株式会社 | 光ファイバテープ心線 |
JP2016146003A (ja) | 2016-05-20 | 2016-08-12 | 日本電信電話株式会社 | 間欠接着型光ファイバテープおよびこれを用いた光ケーブル |
US20190049681A1 (en) * | 2017-08-08 | 2019-02-14 | Corning Research & Development Corporation | Rollable optical fiber ribbon with low attenuation, large mode field diameter optical fiber and cable |
JP2021012269A (ja) * | 2019-07-05 | 2021-02-04 | 古河電気工業株式会社 | 光ファイバテープ心線 |
Non-Patent Citations (1)
Title |
---|
See also references of EP4266100A4 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2024014488A1 (ja) * | 2022-07-13 | 2024-01-18 | 住友電気工業株式会社 | 光ファイバリボンおよび光ケーブル |
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