Technical field
[0001]
　The present invention relates to a method and a manufacturing apparatus manufacturing the optical fiber ribbon.
BACKGROUND
[0002]
　Conventionally, an optical fiber ribbon formed into a tape by arranging a plurality of optical fibers in the radial direction is known. For example, Patent Document 1, which optical fiber adjacent the connection part provided intermittently in the longitudinal direction of the optical fiber are connected is disclosed.
CITATION
Patent Document
[0003]
Patent Document 1: JP 2010-33010 JP
Summary of the Invention
Problems that the Invention is to Solve
[0004]
　In the optical fiber ribbon, as disclosed in Patent Document 1, the strength of the connecting portion is weak, the connecting portion when the bending force or the like is applied there is a possibility that damage.
[0005]
　The present invention aims to provide a manufacturing method and a manufacturing apparatus of an optical fiber ribbon that can increase the strength of the connecting portion for connecting an optical fiber adjacent.
Means for Solving the Problems
[0006]
　The main invention for achieving the above object, a manufacturing method of manufacturing an optical fiber ribbon optical fiber core cable was intermittently linked to longitudinally adjacent, said plurality of said optical fiber a step of feeding along the longitudinal direction, by rotating the rotating body having a cutout portion between the optical fiber adjacent, and a step of applying an intermittently resin in the longitudinal direction, the light periphery of the rotating body between the optical fiber core is the moving speed of the longitudinal direction of the peripheral edge at the position of blocking the resin is characterized by slower than feeding speed of the optical fiber a method for producing a fiber ribbon.
[0007]
　Other features of the invention will become apparent from the description in this specification and the accompanying drawings.
Effect of the invention
[0008]
　According to the present invention, it is possible to increase the strength of the connecting portion for connecting the optical fiber adjacent.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009]
[1] Figure 1A is a perspective view showing a configuration example of an optical fiber ribbon according to an embodiment of the present invention, FIG. 1B is a sectional view along line A-A of FIG. 1A.
[2] Figure 2A is a perspective view showing a configuration example of an apparatus for manufacturing an optical fiber ribbon, FIG. 2B is a plan view illustrating a state where the optical fiber adjacent the connection portion is connected.
[3] is an explanatory view illustrating the relationship between the optical fiber and the rotating body.
[4] Figure 4A is a schematic view showing an optical fiber ribbon in Examples 1-5, FIG. 4B is an explanatory view illustrating the test tear in Examples 1, 3, 4, 5.
[5] Figure 5A is a table showing the test results in Example 1, FIG. 5B is a table showing the test results of Example 2.
6 is a table showing the test results of Example 3.
[Figure 7] is a table showing the test results in Example 4, Figure 7A in the case of a diameter of 5 mm, Fig. 7B shows a case with a diameter of 25 mm.
[Figure 8] is a table showing the test results of Example 5, FIG. 8A when the thickness 20 [mu] m, FIG. 8B in the case of 50 [mu] m, Fig. 8C is a case of 110 [mu] m.
DESCRIPTION OF THE INVENTION
[0010]
　The description of this specification and the accompanying drawings, at least the following matters will be made clear.
[0011]
　A method of manufacturing an optical fiber ribbon optical fiber core cable was intermittently linked to longitudinally adjacent the steps of feeding along a plurality of the optical fiber in the longitudinal direction, adjacent the rotary member is rotated with a cutout portion between the optical fiber, and a step of applying an intermittently resin in the longitudinal direction, the rotating body between said optical fiber said longitudinal moving speed of the peripheral portion at a position where the peripheral portion blocking the resin, the production method of slow optical fiber ribbon than feeding speed of the optical fiber becomes apparent.
[0012]
　According to the manufacturing method of such an optical fiber ribbon, the strength of the connecting portion for connecting the optical fiber adjacent can be increased, the connecting portion even when the bending force or the like is applied is not easily broken Become.
[0013]
　A method for manufacturing an optical fiber ribbon according, feeding speed of the optical fiber is, the moving speed of the longitudinal direction of the rotation of the rotating body at the position of blocking the resin between the optical fiber it is desirably 2.9 times or more.
[0014]
　According to the manufacturing method of such an optical fiber ribbon, it is possible to further increase the strength of the connecting portion for connecting the optical fiber adjacent.
[0015]
　A method for manufacturing an optical fiber ribbon according, feeding speed of the optical fiber is, the moving speed of the longitudinal direction of the rotation of the rotating body at the position of blocking the resin between the optical fiber of desirably less 35.1 times.
[0016]
　According to the manufacturing method of such an optical fiber ribbon, it is possible to further increase the strength of the connecting portion for connecting the optical fiber adjacent.
[0017]
　A manufacturing apparatus for manufacturing an optical fiber ribbon, optical fiber ribbon manufacturing apparatus for manufacturing the optical fiber ribbon in the manufacturing method of the optical fiber ribbon according becomes apparent.
[0018]
　According to such an optical fiber ribbon production apparatus, it is possible connecting part for connecting the optical fibers adjacent to producing hardly optical fiber ribbon breakage.
[0019]
=== Embodiment ===

　The configuration of the optical fiber ribbon 1 according to the present embodiment will be described with reference to FIGS. 1A and 1B.
[0020]
　1A is a perspective view showing a configuration example of an optical fiber ribbon 1, FIG. 1B is a sectional view along line A-A of FIG. 1A.
[0021]
　Optical fiber ribbon 1 is arranged plurality in a direction intersecting the optical fiber 3 in the optical axis direction, those tape-like obtained by connecting the optical fiber 3 adjacent. In FIG. 1A and 1B, shows an optical fiber ribbon 1 formed by arranging four optical fiber 3.
[0022]
　In the following description, the optical axis of the optical fiber 3 and "longitudinal", a plurality of the alignment direction of the optical fiber 3 and "tape width direction".
[0023]
　Optical fiber 3 adjacent are connected by a plurality of connecting portions 5 which are intermittently arranged in the longitudinal direction. Further, the plurality of connecting portions 5, two-dimensionally in the longitudinal direction and tape width direction are intermittently arranged. As shown in FIG. 1B, the connecting section 5 is formed by resin 9 covering the outer periphery of the optical fiber 3.
[0024]
　In between the optical fiber 3 adjacent the optical fiber 3 adjacent in a region other than the connection portion 5 is not connected, the separator 7 (non-connecting portion) is formed. That is, in the separator 7, the optical fiber 3 adjacent are not constrained to each other. Accordingly, or into a tubular shape by rolling the optical fiber ribbon 1, it is possible to collapse, it is possible to bundle multiple optical fiber 3 at a high density.
[0025]
　Optical fiber 3, as shown in FIG. 1B, has glass fibers 3A, and a cover layer 3B for covering the outer periphery of the glass fiber 3A. Resin 9 is coated with the outer periphery of the covering layer 3B, part of the resin 9 is in the connecting portion 5 as described above. The resin 9 can be, for example, UV-curable resin.
[0026]

　Next, the configuration of a production apparatus 2 for manufacturing an optical fiber ribbon 1, and a method for manufacturing the optical fiber ribbon 1, FIG. 2A and with reference to FIGS. 2B and FIG. 3 will be described.
[0027]
　2A is a perspective view showing a configuration example of a manufacturing apparatus 2 of the optical fiber ribbon 1, FIG. 2B is a plan view illustrating a state in which the optical fiber 3 adjacent the connecting portion 5 is connected. Figure 3 is an explanatory view illustrating the relationship between the optical fiber 3 and the rotary member 220.
[0028]
　As shown in FIG. 2A, the manufacturing apparatus 2, and an unillustrated feeding portion for feeding the optical fiber 3 a plurality of (in FIG. 2A present 4), a plurality of optical fiber 3 to the molten resin (resin 9) a coating unit 21 for coating, and a removal section 22 for removing the molten resin, and a light source unit 23 for irradiating ultraviolet rays to the molten resin.
[0029]
　Delivering section is a portion for feeding along a plurality of optical fiber 3 in the longitudinal direction. Applying unit 21 is a portion to be applied to between the outer periphery and the optical fiber 3 adjacent the molten resin optical fiber 3. Removal unit 22, a plurality have a rotating body 220 (FIG. 3 at 2A), the melt by stopping rotating the rotary body 220 between the optical fiber 3 adjacent block the molten resin resin is a portion to be removed.
[0030]
　As shown in FIG. 3, the rotating body 220 are those disk-shaped rotating about an axis along the tape width direction, and has a cutout portion 220A in a part of the periphery. In FIG. 3, the rotating body 220 has the notch portion 220A only one, necessarily notches 220A need not be one, Ya size of notch portions 220A-away depending on the application it is possible to change the number.
[0031]
　If the peripheral portion of the rotary body 220 is not rotated to notches 220A between the optical fiber 3 adjacent (rotated counterclockwise in FIG. 3) is formed has come, the molten resin dam by the periphery It is stopped. Thus, the separator 7 (FIG. 1A and 1B as well as see FIG. 2B) and becomes part are formed. On the other hand, if the notch portion 220A between the optical adjacent fiber 3 has come, flows into without notches 220A of the molten resin is dammed. Thereby, the connecting section 5 (FIGS. 1A and 1B as well as see FIG. 2B) and becomes part is formed.
[0032]
　The moving speed of the longitudinal direction of the peripheral portion at a position where the periphery of the rotating body 220 between the optical adjacent fiber 3 (peripheral edge notches 220A are not formed) is dammed molten resin V2 is is set slower than the feed speed V1 of the plurality of optical fiber 3 (optical fiber ribbon 1) (V2
　Next, Examples 1 at 1-5, a plurality of feed speed V1 of the optical fiber 3, and the moving speed V2 of the longitudinal periphery of the rotating member 220 is changed optical fiber ribbon 1 It was prepared. With reference to FIGS. 4A and 4B, a description will be given of an embodiment 1-5. Moreover, the evaluation of the connection portion 5, 5A and 5B are for Example 1 and Example 2, Figure 6 for Example 3, 7A and 7B for Example 4, Example 5 the Figure 8A ~ C, will be described with reference respectively.
[0040]
　Figure 4A is a schematic view showing an optical fiber ribbon 1 in Example 1-5, FIG. 4B is an explanatory view illustrating the test tear in Examples 1, 3, 4, 5. 5A is a table showing the test results in Example 1, FIG. 5B is a table showing the test results of Example 2. Figure 6 is a table showing test results of Example 3. Figure 7 is a table showing the test results in Example 4, Figure 7A in the case of a diameter of 5 mm, Fig. 7B shows a case with a diameter of 25 mm. Figure 8 is a table showing the test results of Example 5, FIG. 8A when the thickness 20 [mu] m, FIG. 8B in the case of 50 [mu] m, Fig. 8C is a case of 110 [mu] m.
[0041]
(Example 1)
　In Example 1 to prepare an optical fiber ribbon 1 of 12 hearts as shown in Figure 4A with the optical fiber 3 having a diameter of 250 [mu] m 12 present. In this embodiment, the viscosity was used a molten resin of 0.1 Pa · s. At this time, 12 of the delivery speed V1 of the optical fiber 3 is varied in the range of 150.0 ~ 900.0 [m / min] , the moving speed of the longitudinal periphery of the rotary body 220 V2 113. It was varied in the range of 1 ~ 282.6 [m / min] . The specific relationship between the feed speed V1 and the moving speed V2 (speed ratio) is as shown in Figure 5A.
[0042]
　Further, as shown in FIG. 4A, as the size of the connecting portion 5 is the same, it is adjusted by changing the size and number of the notch 220A of the rotating body 220. In Example 1, the longitudinal length of the connecting portion 5 is 15 mm, longitudinal length of the separating portion 7 is 55 mm. The rotating body 220 used was a 15mm diameter and a thickness of 80 [mu] m.
[0043]
　First, the optical fiber ribbon 1 shown in FIG. 4A, measured for a thickness d of the thin portion 90 in 12 of each optical fiber 3. Thickness d measured results of the thin portion 90 is as shown in "minimum resin thickness d" in FIG. 5A. Incidentally, the "minimum thickness d of the resin", more precisely, calculates the thickness of the thin portion 90 in 12 of each optical fiber 3 (minimum value of the thickness of the resin 9) average is a value.
[0044]
　As shown in FIG. 5A, when slowing the feed speed V1 with respect to the moving speed V2, it can be seen that the value of the minimum thickness d of the resin is large (thick). Here, if the connecting section 5 is broken, the connecting portion 5 is broken cracked by the resin 9 is peeled off from the thin portion 90. Accordingly, the speed ratio V1: V2 by increasing the minimum thickness d of the resin by adjusting, it is possible to suppress the damage of the connecting portion 5 to increase the strength of the connecting portion 5 and the thin portion 90.
[0045]
　The optical fiber ribbon 1 shown in FIG. 4A, was tear test at the connecting section 5 of the 33 locations. Tear test, as shown in FIG. 4B, the end of one optical fiber 31 of the optical fiber 31, 32 adjacent to fixed, the other optical fiber 32 100 [mm / min] in tension in the direction of the arrow shown in FIG. 4B, performed by measuring the weight [gf] applied to the connecting portion 5 at this time.
[0046]
　Specifically, at 10cm position from one end (the end on the side to be torn) of the connecting portion 5, the one optical fiber 31 is fixed, the other optical fiber 32 is pulled. Further, 15cm from one of the respective optical fiber side end being not fixed in the core wire 31, and the other optical fiber is not pulled in the core 32 side end of the connecting portion 5 at one end (the end on the side to be torn) It is set to the position.
[0047]
　In tear test, the connecting portion as a weighting tear force applied to 5, the maximum value of the tearing force when changing the movement speed V2 in the longitudinal direction of the periphery of the feed speed V1 and the rotating body 220 of the optical fiber 3 each minimum value, and average value is shown in Figure 5A.
[0048]
　Next, the optical fiber ribbon 1 shown in FIG. 4A, was ironing test to prepare a 144-core optical fiber cable. Incidentally, ironing test is based on IEC60794-1-2-E18, tension 130 kg, was carried out under the conditions of mandrel diameter 250 mm, and the bending angle of 90 °. After implementation of the ironing test to confirm the presence or absence of breakage of the connecting portion 5 of the optical fiber ribbon 1 was disassembled 144-core optical fiber cable. Check results are shown in Figure 5A.
[0049]
　Results of tearing tests, and referring to the results of the ironing test, if the minimum value of the tear strength in the tear test described above 2.1Gf, it can be seen that breakage of the connecting portion 5 after ironing test is "no" . When the minimum value of the tear strength in the tearing test of 2.1Gf, the speed ratio of the moving speed V2 of the longitudinal direction by the rotation of the rotating body 220 and the delivery speed V1 of the optical fiber 3 V1: V2 is 2.9: and has a 1. At this time, the value of the minimum thickness d of the resin was 6.8 [mu] m, the speed ratio V1: V2 = 1.1: a thickness of about 2 times the value 3.5μm minimum thickness d of the resin in 1 going on. Thus, delivery speed V1 of the optical fiber 3 is, when it is rotating body 220 periphery longitudinal movement speed V2 2.9 times or more of the, the thin portion 90 as compared with the case of V1 = V2 thickness becomes thick (minimum thickness d of the resin), it is possible to increase the strength of the connecting portion 5 and the thin portion 90, it is understood that it is possible to suppress the breakage of the connecting portion 5.
[0050]
　Although it is desirable delivery speed V1 of the optical fiber 3 is not less than 2.9 times the movement speed in the longitudinal direction of the peripheral portion of the rotating body 220 V2, as shown in FIG. 5A, the speed ratio V1: V2 there 2.1: in the case of 1 is larger tearing force in even tear test, it can be said that the strength of the connecting portion 5 and the thin portion 90 is increased. Accordingly, the strength of the connecting portion 5 and the thin portion 90 as long as at least V1> V2 is increased.
[0051]
(Example 2)
　In Example 2, to prepare a first embodiment of the 12 hearts as shown in Figure 4A as well by using an optical fiber 3 having a diameter of 250 [mu] m 12 present between the optical fiber ribbon 1, Example 2.9 breakage of the connecting portion 5 after ironing test at 1 range is "No", i.e., delivery speed V1 of the optical fiber 3 is of the moving speed in the longitudinal direction of the peripheral portion of the rotary body 220 V2 in more than twice the range, it was measured and ironing test line length difference. Incidentally, ironing test was conducted under conditions similar to those conducted in Example 1.
[0052]
　More specifically, 12 pieces of the delivery speed V1 of the optical fiber 3 is varied in the range of 400.0 ~ 900.0 [m / min], the moving speed of the longitudinal periphery of the rotary body 220 V2 It was varied in the range of 13.2 ~ 59.4 [m / min]. The specific relationship between the feed speed V1 and the moving speed V2 (speed ratio) is as shown in Figure 5B.
[0053]
　Line length difference, the longitudinal length of the state of the optical fiber ribbon 1, in the longitudinal direction of the optical fiber ribbon 1 in the state of the optical fiber 3 that the single-core separated difference between the length, It indicated by dividing the percentage [%] in the longitudinal direction of the length of the optical fiber ribbon 1. In Figure 5B, shows a maximum value of the line length difference in the case where the movement speed V2 in the longitudinal direction of the peripheral portion is changed in the optical fiber 3 in the delivery speed V1 and the rotating body 220, the minimum value, and mean value, respectively there.
[0054]
　This when the line length difference is large will participating small bending to the optical fiber 3 is, in the case of preparing a fiber optic cable using the optical fiber ribbon 1, increases and the optical fiber transmission loss because it may lead to 3 disconnection, line length difference is preferably less than ± 0.1%.
[0055]
　Referring now to the measurement results of the line length difference as shown in Figure 5B, the speed ratio V1: V2 is 40.0: line length difference 0.13% in maximum at 1, the speed ratio V1: V2 is 45.5: line length difference 0.12% in maximum at 1, it is confirmed that occurs respectively.
[0056]
　Therefore, considering the line length difference, delivery speed V1 of the optical fiber 3 is, it is more preferably not more than 35.1 times the longitudinal direction of 2.9 times or more of the moving speed V2 of the peripheral portion of the rotary member 220 . In Example 2, breakage of the connecting portion 5 after ironing test is "no" in all cases.
[0057]
(Example 3)
　In Example 3, similarly to Example 1, using an optical fiber 3 having a diameter of 250 [mu] m 12 present, the speed ratio of the feed speed V1 and the moving speed V2 V1: the V2 V1: V2 = 1.1: 1,2.1: 1,2.9: 1, and 4.2: optical fiber ribbon 1 of 12 hearts as shown in Figure 4A was prepared by four different 1, tear test and I was ironing test. In this embodiment, unlike the first embodiment, the viscosity was used a molten resin of 5.0 Pa · s. Note that, for example other for such size of the rotating body 220, the same as in Example 1.
[0058]
　The maximum value of the tear strength in the tear test, the minimum value, and average value, the presence or absence of breakage of the connecting portion 5 after the test ironing as well The results are shown in FIG. 6, respectively. Results of tearing tests, and referring to the results of the ironing test, if the minimum value of the tear strength in the tearing test is not less than 2.0 gf, it can be seen that breakage of the connecting portion 5 after ironing test is "no" . When the minimum value of the tear strength in the tearing test of 2.0gf speed ratio V1: V2 = 2.9: 1, in the same manner as in Example 1, feeding speed V1 of the optical fiber 3 is rim of the rotary body 220 If parts are longitudinally moving speed V2 2.9 times or more of the, it can be seen it is possible to increase the strength of the connecting portion 5 and the thin portion 9. From here, regardless of the viscosity of the molten resin, the strength of the connecting portion 5 and the thin portion 9 by the speed ratio between the feeding velocity V1 and the moving speed V2 increases seen used.
[0059]
(Example 4)
　In Example 4, by using the rotating body 220 and rotary body 220 having a diameter different from that used in Examples 1-3, to produce an optical fiber ribbon 1 of 12 hearts as shown in Figure 4A , was tear test and ironing test. In this embodiment, the thickness of the rotating body 220 to a constant value 80 [mu] m, was subjected to a diameter in duplicate of 5mm and 25 mm. Note that, for example other for such viscosity of the molten resin, the same in the two cases.
[0060]
　The minimum thickness of the resin when the diameter of the rotary member 220 is 5 mm d, the maximum value of the tear strength, the minimum value, and mean value, respectively the result of the presence or absence of breakage of the connecting portion 5 after the test ironing as well, Figure 7A it is as shown. Results of tearing tests, and referring to the results of the ironing test, if the minimum value of the tear strength in the tear test described above 4.4Gf, it can be seen that breakage of the connecting portion 5 after ironing test is "no" .
[0061]
　In this case, in the same manner as in Example 1, feeding A slow speed V1 with respect to the moving speed V2, it can be seen that the value of the minimum thickness d of the resin is large (thick). Minimum thickness d of the resin when the minimum value of the tearing strength in the tear test 4.4gf is 7.3 .mu.m. In this case, the speed ratio V1: V2 = 2.9: 1. Therefore, in the same manner as in Example 1 and Example 3, when delivery speed V1 of the optical fiber 3 is not less than 2.9 times the movement speed in the longitudinal direction of the peripheral portion of the rotating body 220 V2, the connecting section 5 and it can be seen it is possible to increase the strength of the thin portion 9.
[0062]
　The minimum thickness of the resin when the diameter of the rotating body 220 is 25 mm d, the maximum value of the tear strength, the minimum value, and mean value, respectively the result of the presence or absence of breakage of the connecting portion 5 after the test ironing as well, in Figure 7B it is as shown. Results of tearing tests, and referring to the results of the ironing test, if the minimum value of the tear strength in the tear test described above 2.3Gf, it can be seen that breakage of the connecting portion 5 after ironing test is "no" .
[0063]
　In this case, as in the case the diameter of the rotary member 220 is 5 mm, when slowing the feed speed V1 with respect to the moving speed V2, it can be seen that the value of the minimum thickness d of the resin is large (thick) . Minimum thickness d of the resin when the minimum value of the tearing strength in the tear test 2.3gf is 6.5 [mu] m. In this case, the speed ratio V1: V2 = 2.9: 1, as in the case the diameter of the rotary member 220 is 5 mm, feed speed V1 of the optical fiber 3 a longitudinal peripheral portion of the rotary member 220 If it is the movement speed V2 2.9 times or more of, it can be seen it is possible to increase the strength of the connecting portion 5 and the thin portion 9.
[0064]
　From the above, in the case the diameter of the rotating body 220 is 5mm and 25 mm, if the feeding speed V1 of the optical fiber 3 is not less than 2.9 times the movement speed in the longitudinal direction of the peripheral portion of the rotary body 220 V2, the determination the result is "○". From here, regardless of the size of the diameter of the rotating body 220, the strength of the connecting portion 5 and the thin portion 9 by the speed ratio between the speed V1 and the moving speed V2 delivery increases may be seen.
[0065]
(Example 5)
　In Example 5, using a rotating body 220 rotating body 220 and having different thicknesses used in Example 1-3, produce an optical fiber ribbon 1 of 12 hearts as shown in Figure 4A and it was subjected to tear test and ironing test. In this embodiment, the diameter of the rotary member 220 to a constant value 15 mm, was subjected to a thickness of 20 [mu] m, 50 [mu] m, and using three 110 [mu] m. As in Example 4, for example other for such viscosity of the molten resin, which is the same in the three cases.
[0066]
　Each minimum thickness thickness of the resin in the case of 20μm of the rotating body 220 d, the maximum value of the tear strength, the minimum value, and average value, the presence or absence of breakage of the connecting portion 5 after the test ironing as well results, 8A it is as shown in FIG. Results of tearing tests, and referring to the results of the ironing test, if the minimum value of the tear strength in the tear test described above 2.7Gf, it can be seen that breakage of the connecting portion 5 after ironing test is "no" .
[0067]
　In this case, in the same manner as in Example 1 and Example 4, feeding A slow speed V1 with respect to the moving speed V2, it can be seen that the value of the minimum thickness d of the resin is large (thick). Minimum thickness d of the resin when the minimum value of the tearing strength in the tear test 2.7gf is 7.7 .mu.m. In this case, the speed ratio V1: V2 = 2.9: 1. Therefore, in the same manner as in Example 1 and Example 3, when delivery speed V1 of the optical fiber 3 is not less than 2.9 times the movement speed in the longitudinal direction of the peripheral portion of the rotating body 220 V2, the connecting section 5 and it can be seen it is possible to increase the strength of the thin portion 9.
[0068]
　Each minimum thickness thickness of the resin in the case of 50μm of the rotating body 220 d, the maximum value of the tear strength, the minimum value, and average value, the presence or absence of breakage of the connecting portion 5 after the test ironing as well results, 8B it is as shown in FIG. Results of tearing tests, and referring to the results of the ironing test, if the minimum value of the tear strength in the tear test described above 2.6Gf, it can be seen that breakage of the connecting portion 5 after ironing test is "no" .
[0069]
　In this case, as in the case where the thickness of the rotary body 220 is 20 [mu] m, A slow feed speed V1 with respect to the moving speed V2, it is that the value of the minimum thickness d of the resin is large (thick) It can be seen. Minimum thickness d of the resin when the minimum value of the tearing strength in the tear test 2.6gf is 6.5 [mu] m. In this case, the speed ratio V1: V2 = 2.9: 1, as in the case the thickness of the rotary body 220 is 20 [mu] m, feed speed V1 of the optical fiber 3 is a longitudinal peripheral portion of the rotary member 220 If it is more than 2.9 times the movement speed V2 of the direction, it can be seen it is possible to increase the strength of the connecting portion 5 and the thin portion 9.
[0070]
　Each minimum thickness thickness of the resin in the case of 110μm of the rotating body 220 d, the maximum value of the tear strength, the minimum value, and average value, the presence or absence of breakage of the connecting portion 5 after the test ironing as well results, Figure 8C it is as shown in FIG. Results of tearing tests, and referring to the results of the ironing test, if the minimum value of the tear strength in the tearing test is not less than 3.5 gf, it can be seen that breakage of the connecting portion 5 after ironing test is "no" .
[0071]
　In this case, as in the case where the thickness of the rotary body 220 is 20μm and 50 [mu] m,, when the feeding speed V1 slower relative moving speed V2, the value of the minimum thickness d of the resin is large (thick) made by it can be seen that there. Minimum thickness d of the resin when the minimum value of the tearing strength in the tear test 3.5gf is 7.1 [mu] m. In this case, the speed ratio V1: V2 = 2.9: 1, as in the case the thickness of the rotary body 220 is 20μm and 50 [mu] m,, delivery speed V1 of the optical fiber 3 is rim of the rotary body 220 If parts are longitudinally moving speed V2 2.9 times or more of the, it can be seen it is possible to increase the strength of the connecting portion 5 and the thin portion 9.
[0072]
　As described above, in the case the thickness of the rotary body 220 is 20 [mu] m, 50 [mu] m, and all the 110 [mu] m, 2.9 times the feed speed V1 of the optical fiber 3 is the moving speed of the longitudinal periphery of the rotary body 220 V2 is equal to or greater than, the result of the determination is "○". From here, regardless of the size of the diameter of the rotating body 220, the strength of the connecting portion 5 and the thin portion 9 by the speed ratio between the speed V1 and the moving speed V2 delivery increases may be seen.
[0073]
=== Other ===
　The embodiments described above are intended to facilitate understanding of the present invention and are not to be construed as limiting the present invention. The present invention, without departing from the spirit thereof, may be changed or improved, the present invention is, of course, includes the equivalents thereof.

claims.1
　A method of manufacturing an optical fiber ribbon optical fiber core cable was intermittently linked to longitudinally adjacent,
　and a step for feeding along a plurality of the optical fiber in the longitudinal direction,
　adjacent the rotary member is rotated with a cutout portion between the optical fiber, and a step of applying an intermittently resin in the longitudinal direction,
　the rotating body between said optical fiber It said longitudinal moving speed is slower than the feeding speed of the optical fiber of the peripheral portion at a position where the peripheral portion blocking the resin
manufacturing process of the optical fiber ribbon, characterized in that.
[Requested item 2]
　A method for manufacturing an optical fiber ribbon according to claim 1,
　feeding speed of the optical fiber is, the by rotation of the rotating body at the position of blocking the resin between the optical fiber it longitudinal movement speed of 2.9 times or more of
a method of manufacturing an optical fiber ribbon, characterized in that.
[Requested item 3]
　A method for manufacturing an optical fiber ribbon according to claim 2,
　feeding speed of the optical fiber is, the by rotation of the rotating body at the position of blocking the resin between the optical fiber or less 35.1 times the moving speed of longitudinal
production method of the optical fiber ribbon, characterized in that.
[Requested item 4]
　Manufacturing the optical fiber ribbon in the manufacturing method of the optical fiber ribbon according to any one of claims 1 to 3,
the optical fiber ribbon manufacturing apparatus characterized by.