• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A splittable optical fiber ribbon has a decreased propensity for fiber fallout along a longitudinal split. Fibers adjacent to a split location, called border fibers, have increased bond strength between their ink-coating and a surrounding matrix material. The bond strength is increased by first partially curing an ink that covers the border fibers, coating the partially-cured fibers with a matrix material, and then substantially fully curing the ink and the matrix material substantially simultaneously. The ribbon may include one or more grooves to enhance splitting the ribbon into subsets.
    公开号:SE1050688A1
    申请号:SE1050688
    申请日:2007-12-11
    公开日:2010-06-24
    发明作者:Ben H Wells；Grant M Davidson；John Sach
    申请人:Prysmian Comm Cables And Syste；
    IPC主号:
    专利说明:

    [7] Such a technical solution is disclosed, for example, in U.S. Patent No. 4,847,607. 6,175,677, wherein a primary band-forming filler material encloses the optical fibers in a subunit, and a secondary band-forming layer encloses the primary band-forming layer for all the subunits that form the optical fiber band.
    [8] These solutions with double layers of filling material are interesting as the size of the subunits to be separated is determined in advance. However, a more complicated manufacturing process is required to produce a belt with double layers of filler material in the form of subunits. In fact, in order to produce a 12-fiber strip by joining three 4-fiber subunits, four passages must be made through the filler material loading equipment (one for joining each of the 4-band subunits in an inner filler material, and one for joining the subunits in an outer filler material). On the other hand, a conventional 12-fiber strip with a single layer of filler material requires only one passage through the filler material application equipment.
    [9] Strips with double layers of filler material and subunits have other disadvantages.
    [10] Another method of making the strip divisible involves introducing at least one load concentration or weakness range to the filler layer closest around the fibers. These load concentrations help to isolate a division of the band to a particular location, and facilitate the separation of the subunits within the optical fiber. For example, U.S. Patent No. An optical fiber belt provided with at least one load concentration extending along at least a portion of the belt, parallel to the longitudinal axis of the belt.
    [11] Similarly, U.S. Pat. 7 187 830 units of optical fiber bands with a preferential tear portion formed between adjacent fibers in an optical fiber band. The tear part is formed by a weakened part of the filling material of the strip, where the weakened part has a reduced hardening level compared to the enclosing filling material, and thereby forms the weakened part. The reduced level of cure in the filler material is achieved by varying the dose of radiation for curing the filler material at the location of the preferential tear portion.
    [12] Applicants have noted that single-layer optical fiber strips are particularly preferred, since the above-mentioned disadvantages of the dual-layer fill material solutions can be advantageously avoided, and, moreover; a strip with a single layer of filler material has an advantageously reduced size in relation to a strip with two different layers of filler material.
    [13] However, Applicants have also noted that in the case of optical fiber strips with a single layer of filler material, the outermost fibers of the strip may lose the adhesion to the filler material as a strip is split into smaller strip units, and the phenomenon of fiber failure may occur. In addition, this disadvantage can be exacerbated when load concentrations are incorporated in the belt to be divided.
    [14] In view of these shortcomings, there is a need to provide a division of a divisible optical fiber band that reduces the occurrence of fiber failure. There is also a need to offer a divisible optical fiber band that can be easily and correctly divided into two or more band subunits. Furthermore, there is also a need for more efficient manufacturing processes for the manufacture of divisible optical fiber strips with a reduced incidence of fiber failure.
    [15] Applicants have found that in divisible optical fiber ribbons, the phenomenon of fiber failure can be advantageously avoided or at least remarkably reduced by creating a strong chemical bond between the optical fibers and the filler material in the ribbon.
    [16] According to an embodiment of the present invention, a strong chemical bond is created between the boundary fibers and the filler material (eg the polymeric material in the coating of the strip). According to said embodiment, the phenomenon of fiber failure is advantageously reduced for the optical fibers which are adjacent to a splitting region of the belt, and which after the splitting step are positioned at the axial ends of the formed band subunits, said optical fibers being those exposed to the phenomenon of fiber failure. The strong bonding force obtained with the present invention allows the boundary fibers (obtained when the strip is divided) to maintain their axial positioning and their mutually adjacent position relative to the remaining optical fibers.
    [17] According to a further embodiment of the present invention, a strong chemical bond is created between the optical fibers included in the optical band and the filler material covering the optical fibers to form the optical band.
    [18] In one aspect, a method of making a divisible optical fiber ribbon includes coating the boundary fibers with a first radiation curable ink, partially curing the first radiation curable ink, applying a filler material over the partially cured ink to the boundary fibers, and completely curing the filler material and the partially cured ink substantially simultaneously. Partial curing of the first irradiation cure only the ink is performed by subcuring the ink by about 5 percent to 15 percent. Partial cure can be achieved by limiting the amount of radiation that reaches the first radiation curable ink over a predetermined period of time.
    [19] The method may also include, prior to coating the optical fibers with the filler material, coating the plurality of optical fibers other than the boundary fibers with a second radiation curable ink and completely curing the second radiation curable ink. The first and second radiation curable inks may have different curing properties, so that partial curing of the first radiation curable ink and complete curing of the second radiation curable ink occur by exposing the plurality of optical fibers to the same radiation dose. Alternatively, partial curing may involve limiting the amount of radiation reaching the first radiation curable ink for a predetermined period of time compared to the amount of radiation reaching the second radiation curable ink.
    [20] The manufacture of the optical fiber band may further include the formation of a groove in the filler material which extends longitudinally and substantially between the boundary fibers. The minimum thickness of the filler material in the groove is between about 0.01 millimeters and about 0.035 millimeters.
    [21] According to other aspects of the disclosed embodiments, a divisible optical fiber band includes a plurality of optical fibers placed side by side, the plurality including at least a group of two boundary fibers placed next to each other. The tape includes a first radiation cured coating which covers the boundary fibers and provides color based identification for each of the boundary fibers, and a second radiation cured coating which covers and constitutes color based identification for each of the non-boundary fibers. A radiation-cured filler encapsulates the plurality of color-coded optical fibers, and includes a longitudinal weakened area between at least one group of two boundary fibers. The filler material adheres to the dye coating on the boundary fibers by chemical bonding via radiation curing.
    [22] According to embodiments of the present invention, the strong chemical bond obtained in the interface between the covering filler material and the boundary fibers is such that a markedly high splitting force (ie higher than that of the tapes known in this field) is required to separate the filler material. from the boundary fibers. The splitting force may preferably be from about 0.049 N to about 4.176 N. More preferably, the splitting force is between about 0.080 N and 0.500 N. Even more preferably, the splitting force is between about 0.098 N and about 0.348 N. The divisible optical fiber band may be require a force to separate the filler material from the boundary fibers equal to the force required to separate the filler material from the non-boundary fibers. Alternatively, the strip may require a force for separating the filler material from the boundary fibers that is greater than the force required to separate the filler material from non-boundary fibers.
    [23] According to a preferred embodiment of the present invention, the belt may include a longitudinal region of weakening in the form of a groove. The angle at which the groove cuts into the horizontal plane of the filler material is about 17 ° to about 35 °. The groove can preferably be placed about halfway between the two optical fibers, and above the optical fibers. Alternatively, the groove may be placed between the two optical fibers, but offset from the center thereof. According to one embodiment, the longitudinally extending grooves are in v-shape.
    [24] The minimum point of filler material between the groove and the adjacent boundary optical fiber can be as much as 0.035 mm of filler material and as little as about 0.010 mm of filler material at the minimum point. The depth of the groove into the filler material, measured from the centerline of the optical fibers to the lowest point of the groove, is greater than about 0.090 mm in one version. The angle of the groove, as measured from the horizontal plane of the main surface of the filler material, is preferably approximately greater than or equal to about 17.5 ° in one version, and less than about 35 ° according to another embodiment.
    [25] The groove may form a central angle in the filler material between the adjacent optical fibers which, in one embodiment, is between about 100 ° and 145 °. According to another embodiment, the central angle is about 135 °. According to another embodiment, the central angle of the groove and the depth of the groove are selected so that the minimum point of the radiation curable filler material between the groove wall and one of the adjacent boundary fibers is such that the strip can be easily divided, yet the dividing point is in the correct position to leave sufficient of the adjacent boundary fibers covered by the radiation curable filler material to prevent fiber failure.
    [26] Additional objects and advantages of the embodiments will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the embodiments. The objects and advantages of the embodiments may be realized and attained by the elements and combinations particularly pointed out in the appended claims.
    [27] It is to be understood that both the foregoing general description and the following detailed description are merely examples and explanations and are not limiting of the embodiments as set forth in the claims.
    [28] The accompanying figures, which are incorporated in and constitute parts of this specification, illustrate a number of embodiments and, together with the description, serve the purpose of explaining the exemplary embodiments.
    [29] Fig. 1A is a diagram as an example of a sectional view of a divisible optical fiber band, according to an embodiment.
    [30] Fig. 1B is a diagram as an example of a sectional view of a divisible optical fiber band, in accordance with another embodiment.
    [32] Fig. 3 is a flow chart exemplifying the fabrication of a divisible optical fiber band, in accordance with one embodiment.
    [33] References are now made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference number will be used for all figures to refer to the same or corresponding parts.
    [35] Figure 1B shows a cross-sectional view of a larger version 139 of the belt 105 of Figure 1A.
    [37] The ink, designated 130 in Figure 1A, imparts a distinctive pigment-based dye to each of the optical fibers 121 in the belt 105. Ink 130 is radiation curable and may be any radiation curable ink suitable for coating optical fibers, including those disclosed in U.S. Pat. 7,174,079 which is incorporated herein by reference. Preferred inks include the MP series and the DX-100 series of inks from DSM Desotech. The inks used for each of the respective optical fibers may have different colors. Giving the optical fibers 121 distinctive colors may allow a user to determine which fibers in the divisible optical fiber band 105 carry particular data and / or are to be separated at a particular node. In addition, fibers designated as boundary fibers 110 may preferably be covered with a different ink than other fibers to be immediately identifiable by a user.
    [38] In step 320 of Figure 3, the radiation cure is only the ink on at least the boundary fibers 110 partially cured. Curing of ink layers 130 occurs by exposing the coated optical fiber to a sufficient radiation dose with wavelengths adapted to the curing properties of the ink, which is usually ultraviolet light. The level of radiation hardening of the boundary fibers can be controlled in several ways. For example, incomplete curing can be achieved by selecting an appropriate wavelength of the curing light for the composition of the ink, by filtering radiation that would otherwise reach the coated fibers 110, or by exposing the fibers 110 to radiation for a shorter time than required for complete curing. Shortening of the exposure time to radiation can be done, for example, by passing the fiber through a curing chamber at a higher feed rate than normal. "Partial curing" refers to curing the ink composition less than about 85 percent to 95 percent of its capacity. Although the ink 130 in at least boundary fibers 110 is partially cured in step 320, fibers coated with ink 130, in addition to boundary fibers 110, may also be only partially cured. Alternatively, in one embodiment, and possibly to simplify the manufacturing process, all fibers 121 coated with ink 130 may be only partially cured. In this embodiment, all fibers can be considered as boundary fibers.
    [39] Preferably, non-bound fibers in the strip 105 may have their ink completely cured prior to joining to a strip. Complete or complete curing can take place, for example, by applying a sufficient radiation dose adapted to the curing properties of the applied ink.
    [40] Step 330 in Figure 3 indicates that the plurality of optical fibers are arranged side by side. As shown in Figure 1A, the fibers are preferably positioned in a horizontal plane so that they just touch each other, with boundary fibers 110 placed adjacent to each other and in the same plane.
    [41] After axial alignment of the optical fibers side by side, the plurality of fibers can be covered (ie, coated) with a filler material in step 340. The filler material 140 provides a flexible, protective coating that seals the optical fibers in position and creates an outer shape of the band 105.
    [42] The optical fibers are encapsulated in the filler material 140 by applying the radiation core only the filler material to the optical fibers while the optical fibers pass through an applicator head and a mold. Step 340 preferably involves applying the filler material 140 by means of only one passage through the applicator (also known as a coater). Compared to belts that have encapsulations of multiple layers of filler material, a single pass reduces the complexity and cost of the manufacturing process. Through a single passage, bending of the fibers and possible signal attenuation are also avoided, things that can occur with today's methods that use multiple applications. Alternatively, although less preferred, multiple applications and multiple coatings of filler material may also be considered using the method and belt shown, and may be used if desired.
    [43] Encapsulation of the strip 105 with filler material 140 results in an optical fiber strip having opposite major surfaces 132 and 133, as shown in Figure 1A. The opposite major surfaces 132 and 133 define the external major surfaces of the divisible optical fiber band 105. As a rule, one or both major surfaces 132 and 133 are substantially planar.
    [44] Finally, at step 350, the radiation curable filler material 140 and the radiation hardened ink 130 are substantially fully cured. The curing generally takes place by passing the filler-covered strip through a chamber which provides radiation with a wavelength adapted to the curing properties of the filler material, preferably ultraviolet light. Completed or complete curing can be achieved, for example, by applying a sufficient radiation dose which is adapted to the curing properties of the applied filling material. As referred to herein, "fully cured" means a curing process that provides greater than or equal to about 95 percent curing.
    [45] According to the method of the present invention, the undercured inks undergo further curing during the curing process of the filler material, thereby creating a strong chemical bond between the filler material and the optical fiber ink as a result of at least partial mutual penetration of filler material and inks during the curing process thereof. As mentioned above, the applicants considered that the phenomenon of fiber failure can be avoided - or at least remarkably reduced - by increasing the bonding force between the optical fibers in the strip (at least the boundary fibers thereof) and the filler material, a result of the strong chemical bonding created at the fiber / filler material, and which is achieved by supplying at least the boundary fibers a subcured ink which is further cured (preferably completely cured) during the subsequent step of curing the filler material. This means that, although the radiation curable ink 130 on the optical fibers is not "fully cured" at the end of the curing step of the filler material, the ink is more cured than before and thereby strongly bonded to the filler material.
    [46] Step 350 of Figure 3 also includes "complete curing" (or, as explained above, "further curing") of the partially cured ink covering at least the boundary fibers 110. Thereby, radiation dose and wavelength for curing the filler material 140 can be obtained. selected to provide sufficient radiation dose to completely (or continue) cure the filler material 140 from its applied state, while completing the curing of partially cured inks 130. The transparent properties of the filler material 140 allow passage of the curing radiation through the material 130 which completes the curing of underlying ink 130.
    [47] Curing of the filler material 140 and the ink 130 - the curing of said material is performed substantially simultaneously - creates a stronger bond between these materials than the case according to which ink 130 is fully cured before application of filler material 140. Then the final curing step 350 is substantially completes the curing of the ink 130 on the boundary fibers 110, the fibers 110 are more strongly bonded to the filler material in the finished belt 105. As a result, if splitting of the belt 105 occurs next to a boundary fiber 110, as in 170 of Figure 1A, this particular boundary fiber 110 runs a marked lower risk of fiber loss compared to conventional ribbons. When fibers other than boundary fibers 110 are partially cured (as indicated in step 320), and then substantially fully cured with the filler material 140 (as indicated in step 350), these other fibers will also be more strongly bonded by chemical bonds to the filler material 140.
    [48] When the belt 105 is obtained according to the process schematically shown in Figure 3, the stronger bonds between at least the boundary fibers 110 and the filler material 140 lead to a lower risk of fiber loss for the fibers adjacent to a split in the belt 105. This results in a users can more easily and successfully separate a group of optical fibers from the remainder of the optical fiber band 105. For example, the force required to release the filler material from adjacent optical fibers (i.e., the boundary fibers 110) after separating a group from the rest of the optical fiber the fiber band varies from about 0.049 N to about 4.176 N, and, according to another embodiment, from about 0.080 N to about 0.500 N. More advantageously, according to a further embodiment, is that the splitting force is between about 0.098 N and about 0.348 N.
    [49] For example, a tape containing 12 optical fibers was made according to the method of the present invention. The 12 optical fibers were colored with ink from the DSM Desotech MP series, each fiber with its own color. All inks on all the optical fibers were undercured (from about 87.5% and 92.6% cure), and the collection of optical fibers was coated with a filler material to then cure. The line speed in the tape manufacturing process was about 450 meters / minute.
    [50] As a comparative example, a tape containing 12 optical fibers was prepared. Analogous to the example above, the 12 optical fibers were colored with ink from the DSM Desotech MP series, each fiber with its own color. All the inks on all the optical fibers were completely cured (about 95% curing on average), and the collection of optical fibers was coated with a filler material to be subsequently cured. The line speed in the tape manufacturing process was about 450 meters / minute.
    [51] The belts of both the comparative example and the example of the present invention were provided with at least one longitudinal groove in one of the major surfaces of the belt.
    [52] When the applicants sought to obtain at least two subunits from the original band, it was noted that the band of the present invention could be easily and correctly divided into two sub-bands; while on the other hand the phenomenon of fiber failure occurred with corresponding boundary fibers on the comparison band.
    [53] As generally embodied as 170 (and 180) in Figures 1A and B, a load concentration, or a weakened area, may be created in one of the opposite major surfaces 132 and 133. Preferably, at least one load concentration is provided in each of the opposite major surfaces. 132 and 133. The weakened area provides a site for simplifying the division of the belt 105 into separate parts or subunits. According to one embodiment, the weakened area 170 is formed by a groove formed in the filler material 140. Preferably, the groove 170 is made with an applicator head and has a longitudinal extent, substantially between two adjacent optical boundary fibers among the plurality of optical fibers 121.
    [54] As shown in Figures 1A and 1B, the weakened areas may be grooves 170 and 180 on opposite sides of the belt 105. The grooves 170 and 180 may both be located on opposite surfaces 132 and 133, and between the same boundary fibers 110, as shown Figures 1A and 1B. Alternatively, the grooves 170 and 180 may be located between multiple groups of boundary fibers 110 among the optical fibers 121 within the same band 105.
    [55] In general, the grooves formed in the longitudinal direction have dimensions that allow easy splitting of the belt, either by hand or with a tool, while leaving enough filling material to help avoid fiber loss. Figure 2 shows a more detailed example of a groove 205. Although the groove 205 is v-shaped in Figure 2, other shapes are also possible, including U-shaped grooves. In addition, the depicted v-shape has a straight outside 207, but the v-shape can also be created with a curved outside.
    [56] In addition to the method of assembling the belt 105 of Figure 3, the grooves 170 and 180 may be dimensioned to help retain the boundary fibers 110 in the belt after a division has been made. For example, the filler material 140 may have a minimum thickness 258 between the boundary fibers 210 and 220, and the walls of the groove 205, to avoid fiber loss during splitting. Due to the increased bond strength between the boundary fiber 220 and the filler material 140 when the procedure of Figure 3 is followed, the minimum thickness may be less than with conventional divisible fiber ribbons. Nevertheless, a minimum thickness 258 should be maintained in one embodiment to help retain fiber 220 when the tape is split at groove 205. In one embodiment, the minimum thickness 258 is between about 0.01 millimeters and about 0.035 millimeters. Since the groove does not necessarily follow the radius of the fiber, the location of the minimum thickness may be between the boundary fiber 220 and the wall of the groove 205, rather than at the bottom point of the groove 205. Normally, when the strip is divided, the fracture occurs at or near this minimum thickness point.
    [57] Some grooves 205 (such as the v-shaped groove in Figure 2) may form a central angle Zß in the filler material 140. The central angle 2ß may be from 110 ° and up to about 145 °, for example. another example is the central angle 2ß about 135 °.
    [58] The groove 205 may be located substantially between adjacent optical fibers (ie, boundary fibers) at a preferential dividing point. Although the groove itself may be located substantially or completely above the boundary fibers 210 and 220, such a groove is still "substantially between" the boundary fibers according to the purposes of this discovery. In addition, as referred to herein, "substantially between" includes a groove 205 offset from the midpoint of the center points of the adjacent optical fibers 210 and 220 by a spacer 248. The allowable offset distance 248 between the midpoint between the fibers 210 and 220, and the point of maximum depth of the groove may vary between embodiments, based on the central angle 2ß, and the combined effect of these parameters on the minimum thickness 258. For example, if the parameters result in too small a minimum thickness 258, the displacement distance 248 (or the central angle 2ß ) is reduced. As a general rule, a smaller central angle 2ß may allow a larger displacement distance 258. In addition, these parameters affect the width 250 of the track, which may vary in different embodiments.
    [59] The groove 205 may also vary in depth 268. The depth 268 of the groove is generally limited by the minimum thickness 258 and the other parameters previously described. In addition, if opposite grooves are too deep, the divisible optical fiber band may lack sufficient strength for ordinary handling by a user. 11
    [60] The divisible optical fiber band is divisible at the groove 205 by applying a light traction force to the optical fiber band unit at the fiber range desired to be separated from the rest of the fiber band 105. Once the local separation has been performed, the separation is easily extended by hand to the desired length. . The belt can be placed in the groove at the desired split point. The user can easily push the optical fiber band along a plane perpendicular to the groove in the solid block to divide the tape unit into sections.
    [61] When grooves are used on opposite sides 132 and 133 of belts 105, the adaptation of their respective maximum depth points may require several embodiments. As implied in Figure 1B, for example, the midpoints of the two grooves may be in the same plane and substantially perpendicular to the belt 105. In such an embodiment, the center points may be positioned at the midpoints between the two boundary fibers, or may be offset from the midpoints and closer to one of the two boundary fibers. Alternatively, the maximum depth of one groove 170 may be offset closer to one of the boundary fibers 110, while the maximum depth of another groove 180 may be positioned at the midpoint between the two boundary fibers 110. Alternatively, both grooves 170 and 180 may be offset from the midpoint between the two boundary fibers but not against the same of the two boundary fibers. Other variations are also possible to help facilitate the separation of the band into smaller subunits.
    [62] Other embodiments will be apparent to those skilled in the art upon consideration of specifications and practice of the embodiments set forth herein.
    It is intended that these specifications and examples serve only an exemplary function, with the true scope and spirit of the embodiments indicated by the following claims.
    权利要求:
    Claims (20)
    [1]
    A method of manufacturing an optical fiber band containing a plurality of optical fibers which are in the same plane and arranged in parallel, wherein the band can be divided lengthwise along a path between at least two adjacent boundary fibers among the plurality, the method being characterized by: coating the boundary fibers with a first radiation hardened ink; coating the remainder of the plurality of optical fibers with a second radiation curable ink; partial curing of the first radiation curable ink; substantially complete curing of the second radiation curable ink; applying a filler material over the plurality of optical fibers; and substantially complete curing of the filler material and the partially cured ink substantially simultaneously.
    [2]
    The method of claim 1, wherein the step of partial curing is performed by curing the first radiation curable ink by about 5 percent to about 15 percent.
    [3]
    The method of claim 2, wherein the step of partial curing includes limiting the amount of radiation reaching the first radiation curable ink for a predetermined period of time.
    [4]
    The method of claim 3, wherein the first and second of the radiation curable inks only have different curing properties, and wherein the step of partially curing the first radiation curable ink and the step of substantially complete curing of the second radiation curable ink occurs by exposing the plurality of optical fibers for the same radiation dose.
    [5]
    The method of claim 3, wherein the step of partial curing includes limiting the amount of radiation reaching the first radiation curable ink for a predetermined period of time, compared to the amount of radiation reaching the second radiation curable ink.
    [6]
    The method of claim 1, further comprising the step of creating at least one longitudinally extending weakening region in the filler material, extending longitudinally along and substantially between the boundary fibers. 13
    [7]
    The method of claim 6, wherein the at least one longitudinally extending area of attenuation is created on each of opposite sides of the optical fiber band.
    [8]
    A method according to claims 6 - 7, wherein the step of creating a longitudinally extending weakening area is achieved by forming a groove in the filling material extending longitudinally along and substantially between the boundary fibers.
    [9]
    The method of claim 8, wherein the step of forming a groove is characterized by: providing a minimum thickness of the filler material of between about 0.01 millimeters and about 0.035 millimeters.
    [10]
    A method according to claim 9, wherein the step of forming a groove is characterized by: displacing a place for the minimum thickness of the filling material closer to one of the boundary fibers.
    [11]
    A divisible optical fiber band obtained according to the method according to any one or more of claims 1-10.
    [12]
    A divisible optical fiber band, comprising: a plurality of optical fibers placed in parallel, the plurality comprising at least one group of two boundary fibers placed next to each other; a first radiation curable coating covering the boundary fibers; a second radiation curable coating covering each of the non-boundary fibers; a radiation curable filler material enclosing the plurality of coated optical fibers, and a chemical bond formed in the boundary layer between the filler material and the boundary fibers by radiation curing.
    [13]
    A divisible optical fiber band according to claim 12, wherein a longitudinal weakening region is created between it at least one group of two boundary fibers. 14
    [14]
    A divisible optical fiber strip according to claim 12, wherein the first and second radiation curable coatings have different curing properties.
    [15]
    A divisible optical fiber strip according to claim 12, wherein the first and second radiation curable coatings have the same curing properties.
    [16]
    A divisible optical fiber band according to claim 13, wherein the longitudinal weakening region is a groove.
    [17]
    A divisible optical fiber band according to claim 13, wherein the longitudinal weakening region is at least a pair of opposite grooves.
    [18]
    The divisible optical fiber belt of claim 16, wherein the angle at which the groove intersects the surface of the horizontal plane of the filler material is about 17 ° to about 35 °.
    [19]
    The divisible optical fiber band of claim 16, wherein the groove is located about halfway between the two optical fibers and above the optical fibers.
    [20]
    The divisible optical fiber band of claim 16, wherein a thickness of the filler material between the groove and an adjacent boundary optical fiber is between about 0.035 mm and about 0.010 mm of filler material.
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP0738695B1|1995-04-20|2001-07-25|AT&T IPM Corp.|High speed method for application and curing of optical coating|
    US5717805A|1996-06-12|1998-02-10|Alcatel Na Cable Systems, Inc.|Stress concentrations in an optical fiber ribbon to facilitate separation of ribbon matrix material|
    US6592979B1|1997-08-04|2003-07-15|The Regents Of The University Of California|Hybrid matrix fiber composites|
    US6175677B1|1998-04-17|2001-01-16|Alcatel|Optical fiber multi-ribbon and method for making the same|
    BR0006011A|1999-04-01|2001-03-06|Borden Chem Inc|Fiber optic tapes containing encapsulated materials cured by radiation|
    US6195491B1|1999-04-29|2001-02-27|Lucent Technologies, Inc.|Optical fiber ribbon having differentially enhanced matrix to ink adhesion|
    US7414081B2|1999-07-27|2008-08-19|Draka Comteq B.V.|Colored, radiation-curable composition|
    US6337941B1|1999-09-29|2002-01-08|Alcatel|Splittable optical fiber ribbons|
    US6321014B1|1999-11-01|2001-11-20|Alcatel|Method for manufacturing optical fiber ribbon|
    AT322469T|2000-06-22|2006-04-15|Prysmian Cavi Sistemi Energia|DYED OPTICAL FIBER AND THIS FIBER CONTAINING OPTICAL FIBERBAND|
    EP1369723B1|2001-03-15|2016-12-28|Sumitomo Electric Industries, Ltd.|Split type optical fiber tape core|
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    US6678449B2|2001-07-10|2004-01-13|Alcatel|Visibly distinguishable colored optical fiber ribbons|
    WO2003032035A1|2001-10-04|2003-04-17|Kansai Paint Co., Ltd.|Light guide sheet material and method of manufacturing the sheet material|
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    US7289706B2|2005-11-30|2007-10-30|Corning Incorporated|Optical fiber ribbon with improved stripability|
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    WO2009059636A1|2007-11-06|2009-05-14|Prysmian S.P.A.|Process for manufacturing an optical fiber and an optical fiber so obtained|
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    WO2011044031A1|2009-10-07|2011-04-14|Corning Cable Systems Llc|Durable optical fiber ribbons and methods of making optical fiber ribbons|
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    US11256056B2|2016-04-08|2022-02-22|Fujikura Ltd.|Method for manufacturing optical fiber ribbon, optical fiber ribbon, and optical cable|
    EP3428703A4|2016-04-08|2020-01-08|Fujikura Ltd.|Method for manufacturing optical fiber tape, optical fiber tape, and optical cable|
    CA3026116A1|2016-05-31|2017-12-07|Corning Optical Communications LLC|Optical fiber cable with wrapped, welded jacket and method of manufacturing|
    RU2738329C1|2017-07-11|2020-12-11|Призмиан С.П.А.|Tape from optical fibre and method of production thereof|
    EP3652576A1|2017-07-11|2020-05-20|Prysmian S.p.A.|An optical fiber ribbon assembly and a method of producing the same|
    US11256051B2|2018-01-15|2022-02-22|Prysmian S.P.A.|Flexible optical-fiber ribbon|
    CN111989602A|2018-01-15|2020-11-24|普睿司曼股份公司|Method for manufacturing flexible optical fiber ribbon and said ribbon|
    US10884213B1|2019-11-14|2021-01-05|Prysmian S.P.A.|Optical-fiber ribbon with distorted sinusoidal adhesive pattern and method therefor|
    法律状态:
    2019-07-30| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    PCT/US2007/025237|WO2009075660A1|2007-12-11|2007-12-11|Splittable optical fiber ribbons|
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