JP2020068054A - cable - Google Patents

Abstract

To provide a cable which is excellent in manufacturability, and has high softening temperature and high environmental resistant temperature.SOLUTION: A metallic cable 30a is mainly constituted of a plurality of coated conductors 31, a press-winding tape 37, a laminate tape 1 and an outer coating 17 in this order from an inner side. The coated conductor 31 is composed of a conductor and an insulation coating coating the conductor. The plurality of coated conductors 31 are bundled by a coarse winding string 33. The press-winding tape 37 is collectively wound around the outer periphery of the plurality of bundles composed of the plurality of coated conductors 31. The laminate tape 1 is wound around the outer periphery of the press-winding tape 37. The laminate tape 1 is longitudinally wound so that both ends in a width direction are wrapped in a circumferential direction. The outer coating 17 is provided on the outer periphery of the laminate tape 1. The outer coating 17 is provided so as to cover the outer periphery of the laminate tape 1.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a cable having a laminate tape wound around the outer periphery of a cable core portion.

  Conventionally, a laminated tape including a metal layer and a resin layer has been used in communication cables and the like. With such a laminated tape, it is possible to secure the tensile strength of the cable and impart flame retardancy, water impermeability, shielding property, etc. (for example, Patent Documents 1 to 5).

Japanese Patent Laid-Open No. 2000-241684 JP 2001-143543 A JP, 2001-60418, A JP-A-7-122142 JP, 7-335038, A

  The cable must withstand environmental temperatures. For this reason, the cable is required to have an environment resistant temperature, and the upper limit of 60 ° C. is generally used. That is, even at 60 ° C., it is required that the laminated tape does not soften and the waterproof property does not deteriorate.

  However, due to recent abnormal weather and globalization, the maximum daytime temperature record is about 41 ° C. in Japan and may exceed 50 ° C. overseas. Furthermore, considering the temperature rise due to sunlight, the conventional environment-resistant temperature is not sufficient. If it is used at a temperature higher than the environmental resistance temperature, the resin layer of the laminating tape may be softened, the adhesion may be peeled off to cause a decrease in strength, and a problem may occur such that a convex portion is generated in the lap portion of the laminating tape.

  As described above, there is a demand for a cable that can be used at a higher temperature and has a high environmental resistance temperature. However, as in Patent Documents 1 to 5, in conventional cables, such environmental resistance temperature is taken into consideration. Was not done.

  On the other hand, in order to obtain a higher environmental resistance temperature, there is a method of increasing the softening temperature of the resin layer. However, in order to raise the softening temperature, simply selecting a material with a higher softening point than EVA (ethylene-vinyl acetate copolymer) used conventionally requires processing at a higher temperature than before when manufacturing a laminated tape. Therefore, it was necessary to modify the equipment to have high heat resistance.

  The present invention has been made in view of such problems, and an object thereof is to provide a cable having excellent manufacturability, a high softening temperature, and a high environmental temperature resistance.

  In order to achieve the above-mentioned object, the present invention provides a cable core part, an outer cover provided on the outermost periphery of the cable core part, a laminate arranged inside the outer cover and wound around the outer periphery of the cable core part. The laminated tape is configured by laminating a resin layer and a metal layer, and the resin layer has a base resin of polyethylene or polypropylene and maleic acid of 0.1% by mass or more 2 It is added in a mass% or less, the softening temperature is 75 ℃ or more, the laminate tape is arranged with the resin layer facing outward, the both ends are wound so as to wrap in the circumferential direction, It is a cable that does.

  The jacket may be coated with a flame-retardant resin.

The wrap length of the laminated tape in the circumferential direction is preferably 1 mm or more and 2.0 times or less the cable outer diameter, and more preferably 1 mm or more and 1.5 times or less the cable outer diameter.
It is also possible to electrically connect both ends of the laminating tape to each other by electrically connecting both ends of the laminating tape with only the metal layer without the resin layer only at the portion where the laminating tape is wrapped at both ends.

  The laminating tape may be corrugated.

  An inner sheath is provided on the outer periphery of the cable core portion, the laminate tape is provided on the outer periphery of the inner sheath, and between the cable core portion and the inner sheath, and between the laminate tape and the inner sheath. A tear string may be arranged on each of the above, and a protective tape may be arranged at an appropriate position.

  A first laminating tape provided on the outer circumference of the cable core portion; an inner sheath provided on the outer circumference of the first laminate tape; a second laminating tape provided on the outer circumference of the inner sheath; And an outer cover provided on the outer circumference of the laminate tape, wherein the outer sheath is provided between the cable core portion and the first laminate tape and between the inner sheath and the second laminate tape. A tear string may be arranged and a protective tape may be arranged at an appropriate position.

  According to the present invention, since the laminated tape including the metal layer and the resin layer is wound around the outer periphery of the cable core portion without a gap, high water impermeability can be secured. Further, by adding maleic acid to polyethylene or polypropylene in an amount of 0.1% by mass or more and 2% by mass or less, a softening temperature of 75 ° C. or higher can be secured, a high environmental resistance temperature can be obtained, and JIS K6922 The melt flow rate defined by -2 falls within a predetermined range, and there is little change in equipment for high temperatures.

  Further, if the wrap length of the wrap portion in the circumferential direction is 1 mm or more, the wrap portion will not be peeled off to leave a gap, and if it is 2.0 times or less the outer diameter of the cable, the wrap will be thicker. The number of parts can be reduced, and the number can be further reduced if the outer diameter of the cable is 1.5 times or less.

  Moreover, the flexibility of the cable can be enhanced by applying a corrugating process to the laminated tape.

  Further, in the case of a cable having an inner sheath provided on the outer circumference of the cable core portion, if a tear string is arranged between the inner sheath and the cable core portion and between the laminate tape and the inner sheath, the tear The cable core portion can be easily taken out by the string.

  In addition, by wrapping two layers of laminating tape around the outer circumference of the cable core, it is possible to secure a higher water impermeability, and by using a material such as stainless steel or steel for the outer layer laminating tape It is possible to protect from harm and from direct buried earth pressure. At this time, by arranging the tear cords inside the two-layer laminate tape, the cable core portion can be more easily taken out by the tear cords.

  According to the present invention, it is possible to provide a cable having excellent manufacturability, a high softening temperature, and a high environmental temperature resistance.

Sectional drawing of the laminating tape 1. The perspective view of the metallic cable 30a using the laminating tape 1. Sectional drawing of the metallic cable 30a using the laminating tape 1. The B section enlarged view of FIG. The perspective view of the metallic cable 30b using the laminating tape 1. Sectional drawing of the metallic cable 30c using the laminating tape 1. Sectional drawing of the metallic cable 30d using the laminating tape 1. Sectional drawing of the optical cable 40 using the laminating tape 1. Sectional drawing of the leaky coaxial cable 60.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view of the laminated tape 1. The laminating tape 1 has a resin layer 5 and a metal layer 3 laminated on the resin layer 5. The laminating tape 1 is used by being wrapped around the inside of the jacket of the cable.

  The metal layer 3 of the laminate tape 1 is not particularly limited, but aluminum (including an aluminum alloy), stainless steel, copper (including a copper alloy), or steel can be applied. An adhesive layer (not shown) may be provided on the surface of the laminate tape 1 (the surface of the metal layer 3). Further, the resin layers 5 may be laminated on both surfaces of the metal layer 3.

  The base resin of the resin layer 5 of the laminated tape 1 is polyethylene or polypropylene. By applying polyethylene or polypropylene, the softening temperature can be 75 ° C. or higher. The softening temperature of the resin can be measured, for example, according to JIS K7196 (2012).

  The polyethylene or polypropylene forming the resin layer 5 is crafted by adding maleic acid in an amount of 0.1% by mass or more and 2% by mass or less. Preferably, the polyethylene or polypropylene forming the resin layer 5 contains maleic acid in an amount of 0.2% by mass or more and 1.5% by mass or less, more preferably 0.3% by mass or more and 0.6% by mass or less, or 0% by mass or less. It is desirable to add 1.9 mass% or more and 1.2 mass% or less. By doing so, the melt flow rate of polyethylene or polypropylene forming the resin layer 5 can be set to 0.2 g / 10 min or more and 20 g / 10 min or less as defined by JIS K6922-2. More preferably, the melt flow rate of polyethylene or polypropylene forming the resin layer 5 is 1.0 g / 10 min or more and 15 g / 10 min or less.

  If the melt flow rate is too low, manufacturability deteriorates. On the other hand, if the melt flow rate is too high, a problem may occur in shape retention during production. The melt flow rate can be measured, for example, according to JIS K7210-1 (2014).

  The Shore D hardness of the resin layer 5 is preferably 45 or more. This is because if the Shore D hardness of the resin layer 5 is too low, the rigidity of the cable will be low when used in a cable.

  The laminated tape 1 preferably has a tensile strength at break of 10 MPa or more as a whole. By increasing the tensile breaking strength of the laminate tape 1, the tensile strength of the cable can be increased when it is used for a cable.

  Further, the laminated tape 1 preferably has a yield stress of 5 MPa or more. By increasing the yield point stress of the laminate tape 1, the durability of the cable can be improved when it is used for a cable.

  The thickness of the laminated tape 1 is not particularly limited, but is preferably 0.05 mm to 0.2 mm, for example. If the thickness of the laminated tape 1 is further reduced, the strength of the cable deteriorates. Further, if the thickness of the laminated tape 1 is further increased, the strength is increased, but new problems such as weight reduction occur.

  In addition, the thickness of the resin layer 5 is preferably 0.03 mm to 0.40 mm. If the resin layer 5 is made thinner than this, the adhesiveness is improved, but the manufacturing yield is deteriorated. On the contrary, if the thickness of the resin layer 5 is further increased, a new problem such as deterioration of environment resistance of the cable occurs.

The ratio of the thickness of the resin layer 5 to the thickness of the metal layer 3 is preferably 0.3 ≦ the thickness of the resin layer 5 / the thickness of the metal layer 3 ≦ 1.2. By doing so, it is possible to obtain the effect of preventing a decrease in manufacturing variation of the laminated tape. Further, the peel strength between the metal layer 3 and the resin layer 5 is preferably 2.9 N / mm ² or more.

  Next, an example of a cable using the laminating tape 1 will be described. FIG. 2 is a perspective view showing the metallic cable 30a, and FIG. 3 is a sectional view.

  The metallic cable 30a is mainly composed of a plurality of covered conductive wires 31, a press-winding tape 37, a laminating tape 1, an outer jacket 17 and the like in order from the inside. The coated conductor wire 31 includes a conductor and an insulating coating that coats the conductor.

  The conductor of the coated conductive wire 31 is made of, for example, aluminum or copper, and a single wire as shown in the drawing or a stranded wire not shown in the drawing can be used. An insulating coating is provided on the outer circumference of the conductor. The insulating coating is formed over substantially the entire length of the conductor. The insulating coating is formed of an insulating resin. The coated conductive wire 31 including the conductor and the insulating coating is also used as a single wire, but two wires may be twisted into a pair wire or four wires may be twisted into a quad wire.

  The plurality of covered conductive wires 31 are bundled by the coarse winding cord 33. Further, the press-winding tape 37 is collectively wound around the outer circumferences of the plurality of bundles of the plurality of covered conductive wires 31. In the metallic cable 30a, the plurality of covered conductors 31 bundled by the press-winding tape 37 is used as the cable core portion 25. The holding tape 37 may be a coarse winding string or the like, as long as it can bundle a plurality of coated copper wires 31.

  Here, in forming the cable core portion 25, a pair wire or a quad wire is twisted to form a unit, and the unit is further twisted to be formed, or a single core wire, a pair wire, or a quad wire is twisted in the center layer. Further, there are various methods such as a method of twisting a first core wire, a second core wire, a single core wire, a pair wire, and a quad wire on the upper layer.

  The laminating tape 1 is wound around the outer circumference of the press-winding tape 37. The laminating tape 1 is vertically wound so that both ends in the width direction are wrapped in the circumferential direction. That is, the laminating tape 1 is wound around the outer periphery of the cable core portion 25 by aligning the axial direction of the cable core portion 25 with the longitudinal direction of the laminating tape 1, and the wrap portions 23 at both ends of the laminating tape 1 are formed in a substantially linear shape. To be done.

  A jacket 17 is provided on the outer periphery of the laminate tape 1. The jacket 17 is provided so as to cover the outer periphery of the laminated tape 1. That is, the laminating tape 1 wrapped around the outer circumference of the cable core portion 25 is arranged inside the outer jacket 17, and the outer jacket 17 is provided on the outermost circumference of the cable core portion 25.

  The jacket 17 is made of resin, and for example, a resin such as polyethylene or polyolefin to which carbon black is added can be applied.

  In the metallic cable 30a, the laminating tape 1 functions as a moisture permeation preventive layer. That is, a part of the resin layer 5 of the laminating tape 1 adheres both ends of the laminating tape 1 in the width direction, and the laminating tape 1 and the jacket 17 are adhered to each other, so that it is possible to limit an infiltration path of humidity. It is also possible to eliminate the resin layer 5 only at both ends in the width direction of the laminate tape 1 and make the metal layer 3 electrically conductive at both ends in the width direction, and use the entire laminate tape as a conductor as a metal tube.

  The outer cover 17 may have not only one layer but also two or more layers. In this case, the laminating tape 1 can be used even if it is arranged on any inner layer of the outer covers 17. The laminated tape 1 may be used in two or more layers, and in addition to the laminated tape 1, another layer may be provided with a metal exterior suitable for the purpose.

  In the metallic cable 30a, a tear cord 35 is arranged between the laminating tape 1 and the cable core portion 25. By pulling out the tear cord 35, it is possible to tear the laminate tape 1 and the outer cover 17 and take out the coated conductor wire 31 inside.

  In addition, in the metallic cable 30a, the number of the covered conductors 31 and the number of bundles that form the cable core portion 25 are not limited to the illustrated example. Further, it may be a composite cable in which an optical fiber or the like is arranged.

  As described above, the laminated tape 1 has the wrap portion 23. FIG. 4 is an enlarged view of portion B of FIG. 3, and is an enlarged view of the wrap portion 23. The laminate tape 1 is wound around the outer periphery of the cable core portion 25 with the resin layer 5 outside. That is, the outer cover 17 and the resin layer 5 adhere to each other. Further, in the wrap portion 23, the metal layer 3 at the outer end portion of the wrap portion 23 and the resin layer 5 at the inner end portion thereof adhere to each other.

  The laminated tape 1 may not be provided with an adhesive layer. In this case, in the wrap portion 23, the ends of the laminated tape 1 simply overlap each other, and a slight deviation is allowed. Further, the resin layer 5 and the outer cover 17 may simply be in contact with each other and not adhered.

  Here, the wrap length (B in the figure) in the circumferential direction of the wrap portion 23 is preferably 1 mm or more and 2.0 times or less the outer diameter of the metallic cable 30a, and more preferably 1.5 of the outer diameter. It is better to be no more than twice. If the wrap length is too short, the water impermeability may be deteriorated due to the displacement of the wrap portion 23 when the metallic cable 30a is bent. On the other hand, if the wrap length is too long, the moisture permeation preventive layer becomes thick and flexibility is affected.

  Next, a method of manufacturing the metallic cable 30a will be described. An insulating coating is formed on the outer circumference of the conductor by, for example, extrusion to form the coated conductive wire 31. Next, the coated conductor 31 is twisted by a twisting and gathering machine to twist pair wires and quad wires, unit and its twist, or multi-layered pair wires and quad wires, and bundle them with a coarse winding cord 33 as needed. , The plurality of bundles are collectively wrapped with the press winding tape 37 to form the cable core portion 25. The press-winding tape 37 may be a coarse winding string or the like as long as it can bundle the assembled cores. The laminate tape 1 in which the resin layer 5 and the metal layer 3 and the like are bonded in advance is supplied, and a moisture permeation preventive layer is formed by longitudinally forming the periphery of the press-winding tape 37 (cable core portion 25) by a forming machine or the like. To be done.

  The outer cover 17 is extruded and integrated with the outer periphery of the moisture permeation preventive layer formed by the laminating tape 1. The extrusion processing may be forming and a series of simultaneous processing. The metallic cable 30a is manufactured as described above.

  As described above, according to the present embodiment, since the softening temperature of the resin layer 5 of the laminated tape 1 is 75 ° C. or higher, it is possible to secure a sufficient environmental temperature resistance against the recent increase in air temperature.

  Further, even if the softening temperature of the resin layer 5 is increased, the melt flow rate can be maintained at a predetermined value or more, and therefore the manufacturability is excellent.

  Next, a second embodiment will be described. FIG. 5 is a perspective view showing the metallic cable 30b. In the following description, the same components as those of the metallic cable 30a will be denoted by the same reference numerals as those in FIGS. 1 to 4, and redundant description will be omitted.

  The metallic cable 30b has substantially the same configuration as the metallic cable 30a, but differs in that the laminating tape 1 is corrugated. The corrugated shape of the laminate tape 1 is formed such that peaks and valleys are repeated in the longitudinal direction of the cable core portion 25, and the peaks and valleys are continuous in the circumferential direction. It may be smooth without the corrugated shape.

  The corrugated shape of the laminating tape 1 may be performed at the time of manufacturing the laminating tape 1, and the corrugated laminating tape 1 may be sent around the outer periphery of the cable core portion 25 and wound, or when the laminating tape 1 is formed. In addition, corrugation processing may be performed at the same time.

  Thus, the laminated tape 1 can be used after being corrugated if necessary.

  Next, a third embodiment will be described. FIG. 6 is a cross-sectional view showing the metallic cable 30c. The metallic cable 30c has substantially the same configuration as the metallic cable 30a, but differs in that the laminating tape 1 is spirally wound, not vertically attached.

  The spiral winding may be performed by using one laminated tape 1 so that one end in the width direction of the laminated tape 1 overlaps with the opposite end in the width direction of the laminated tape 1 one round before. In addition, one laminate tape 1 is spirally wound at intervals, and one end or both ends of the other laminate tape 1 in the width direction is covered with a large number of sheets so as to overlap the laminate tape 1 previously wound. It can also be wrapped in a spiral. In this way, the laminated tape 1 may be spirally wound instead of vertically attached.

  Next, a fourth embodiment will be described. FIG. 7 is a sectional view showing the metallic cable 30d. The metallic cable 30d has an inner sheath 39. Similar to the metallic cables 30a, 30b, and 30c, the metallic cable 30d has a plurality of covered conducting wires 31 bundled by a coarse winding cord 33, and a press winding tape 37 is wound around the outer circumference of the plurality of bundles. The holding roll may be a bundle including a bundle, and may be a coarse winding string or the like. Further, the first laminated tape 1 forms a wrap portion 23 and is vertically wound around the outer periphery of the press-winding tape 37 (cable core portion 25). As described above, the laminating tape 1 may be spirally wound, but in the following description, an example in which the laminating tape 1 is longitudinally wound will be described.

  In the metallic cable 30d, the inner sheath 39 is formed on the outer periphery of the first laminate tape 1. The inner sheath 39 is formed by extrusion, for example. The second laminating tape 1 is further wound around the outer circumference of the inner sheath 39.

  A jacket 17 is provided on the outer circumference of the outer second laminated tape 1 and on the outermost circumference of the metallic cable 30d. That is, the second laminating tape 1 is arranged inside the outer cover 17. The outer cover 17 is provided so as to cover the outer periphery of the second laminating tape 1 and is bonded to the resin layer 5 of the second laminating tape 1. That is, the metallic cable 30d has two layers of resin layers of the outer jacket 17 and the inner sheath 39, and the laminating tape 1 is wound in two layers inside the outer jacket 17 and the inner sheath 39, respectively. In the case of having two resin layers of the outer sheath 17 and the inner sheath 39, the laminating tape 1 may be a single layer only on the inner side of either the outer sheath 17 or the inner sheath 39. In this case, the laminating tape 1 An outer covering suitable for the purpose may be provided on the inner side of the outer sheath 17 or the inner sheath 39 where 1 is not arranged. As an example of the exterior, iron may be wound around to prevent electromagnetic induction, or stainless steel may be wound around to prevent damage to birds and animals.

  Thus, when the inner sheath 39 is provided, the space between the first laminating tape 1 on the inner peripheral side and the press-winding tape 37 (cable core portion 25), and the inner sheath 39 and the second laminating on the outer peripheral side. Tear strings 35a and 35b are arranged between the tapes 1, respectively. In this way, by pulling out the tear cord 35b, the outer laminate tape 1 and the outer cover 17 can be torn, and the inner sheath 39 can be exposed. Further, by further pulling out the tear cord 35a, it is possible to tear the inner laminated tape 1 and the inner sheath 39 and take out the inner coated conductor wire 31.

  In the present embodiment, the cable core portion 25 is formed up to the press-winding tape 37, but the inner sheath 39 may be included in the cable core portion 25. In any case, the laminating tape 1 will be wound around the outer circumference of the cable core portion. It should be noted that the laminating tape 1 may not be provided inside the inner sheath 39, and only the resin may be used.

  In this way, by applying the laminating tape 1 to the metallic cables 30a, 30b, 30c, 30d, it is possible to obtain a metallic cable that can ensure water impermeability and is also excellent in environmental resistance.

  Further, like the metallic cable 30d, the inner sheath 39 is provided, and the tear cords 35a and 35b are provided at respective portions, so that the outer sheath 17 and the like and the inner sheath 39 and the like can be torn separately, so that the tearing work can be performed. It is easy to prevent the tear string from breaking.

  Next, a fifth embodiment will be described. FIG. 8 is a sectional view showing the optical cable 40. The optical cable 40 is composed of a tension member 41, a spacer 43, an optical fiber tape core wire 47, an inner sheath 39, a laminating tape 1, an outer jacket 17 and the like.

  The spacer 43 is made of a flexible resin. A plurality of grooves 45 are provided on the outer circumference of the spacer 43, and the grooves 45 are formed continuously in a spiral shape in one direction or in an SZ shape in both directions with respect to the longitudinal direction of the spacer 43. A tension member 41 is provided at the center of the spacer 43. A plurality of optical fiber ribbons 47 are housed in the groove 45. The optical fiber tape core wire 47 is, for example, an optical fiber tape core wire in which optical fibers adjacent to each other in the longitudinal direction are bonded with a UV resin.

  A press-winding tape 49 is wound around the outer circumference of the spacer 43 by vertical attachment or spiral winding. An inner sheath 39 is provided on the outer circumference of the press-winding tape 49 (cable core portion 25). The inner sheath 39 is formed by extrusion molding, for example. A protective tape 53 is wrapped around the outer circumference of the inner sheath 39. The inner sheath 39 and the protective tape 53 are made of resin, and the inner sheath 39 and the protective tape 53 are not bonded.

  The laminating tape 1 is wound around the outer periphery of the protective tape 53. As described above, the laminated tape 1 is longitudinally wound with the resin layer 5 on the outer periphery and the wrap portion 23 provided.

  In the present embodiment, the cable core portion 25 extends to the press-winding tape 49, but the cable core portion may include the inner sheath 39 and the protective tape 53, and only the inner sheath 39 may be used without using the protective tape 53. May be included in the cable core portion. As described above, in any case, the laminating tape 1 is assumed to be wound around the outer circumference of the cable core portion. That is, in the present invention, the fact that the laminate tape 1 is wound around the outer periphery of the cable core portion includes that another structure such as the protective tape 53 is provided between the cable core portion and the laminate tape 1. Further, like the above-mentioned metallic cable, the laminating tape 1 may be smooth, but may be corrugated, and either vertical splicing or spiral winding is possible, and the layer without the laminating tape 1 is suitable for the purpose. You may give an exterior.

  A jacket 17 is provided on the outer circumference of the laminating tape 1 and the outermost circumference of the optical cable 40. That is, the laminating tape 1 is arranged inside the outer cover 17. The jacket 17 is provided so as to cover the outer periphery of the laminating tape 1 and is bonded to the resin layer 5 of the laminating tape 1.

  Also in the optical cable 40, a tear cord is arranged between the laminating tape 1 and the cable core portion 25. In the illustrated example, the tear cord 35a is arranged between the press-winding tape 49 (cable core portion 25) and the inner sheath 39, and the tear cord 35b is further arranged between the protective tape 53 and the laminating tape 1. . By pulling out the tear cord 35b, the laminate tape 1 and the outer cover 17 can be torn to expose the protective tape 53 and the like inside. Further, by pulling out the tear cord 35a, the inner sheath 39 and the protective tape 53 can be torn, and the optical fiber tape core wire 47 inside can be taken out.

  In the optical cable 40, the shape of the groove 45, the number and arrangement of the grooves 45, the configuration of the optical fiber tape core wire 47, etc. are not limited to the illustrated example. Further, the inner sheath 39 and the protective tape 53 are not always necessary.

  In this way, by applying the laminating tape 1 to the optical cable 40, it is possible to obtain an optical cable that can ensure water impermeability and that is also excellent in environmental resistance. It is also possible to form the resin layer 5 so that the wrap portion 23 of the laminated tape 1 can be easily attached to further improve the water impermeability.

  Further, by winding the protective tape 53 between the tear string 35b and the inner sheath 39, it is possible to prevent the tear string 35b from biting into or closely contacting the inner sheath 39 and making it difficult to pull out. You can

  Next, a sixth embodiment will be described. FIG. 9 is a perspective view showing the leaky coaxial cable 60. The leaky coaxial cable 60 includes an inner conductor 61, an insulator 62, an outer conductor 63, a slot 64, a press winding 65, an outer jacket 17, a support wire 66, and the like.

  The inner conductor 61 has a pipe shape or a corrugated corrugated shape, and can be made of, for example, aluminum or copper. An insulator 62 is applied on the inner conductor 61. As the insulator 62, one or a plurality of string-shaped insulators shown in FIG. 9 are arranged on the inner conductor, and a pipe-shaped insulator is further arranged thereon. The insulator 62 is expected to function as a base for adjusting the dielectric constant and winding the outer conductor, and a dielectric such as polyethylene can be used. Further, the insulator 62 may be formed by extruding foamed polyethylene or the like having an adjusted foaming ratio on the inner conductor. An outer conductor 63 having a slot 64 is vertically wound around the insulator 62, and a press winding 65 is spirally wound on the outer conductor 63. Here, the laminating tape 1 can be used for the outer conductor 63, and the laminating tape 1 may be corrugated as in the present embodiment. The structure in which the inner conductor 61 and the insulator 62 are used as a cable core portion and the laminating tape 1 is wound on the cable core portion is similar to the above-described metallic cable or optical fiber cable. Further, the cable with the supporting wire also has the supporting wire 66. When the supporting wire 66 is prepared separately from the cable, a round leaky coaxial cable without the supporting wire 66 may be used.

  As described above, the laminating tape 1 having the slots 64 as the outer conductor 63 is wrapped around the outer circumference of the insulator 62 by vertical splicing. In the wrap portion 23 (not shown) of the laminating tape 1, only the resin layer 5 (not shown) in the lapping range is removed so that the laminating tape 1 is electrically connected at both ends and the laminating tape 1 is electrically connected. Can be pipe-shaped. Further, by using the laminating tape 1, the resin layer 5 serves as a strength support for the metal layer 3 and can improve the environmental resistance performance, and by using the resin layer 5 having high temperature resistance as in the present embodiment. It can be used in high temperature environments.

  In FIG. 9, the laminate tape 1 is wound as the outer conductor 63 on the insulator 62, but a press winding is applied on the insulator 62 for protection and heat resistance, and the laminate tape is used as the outer conductor 63 on the press winding. 1 may be wrapped around.

  Thus, the laminated tape 1 can be suitably applied to various cables.

  Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the technical scope of the present invention is not affected by the above-described embodiments. It is obvious to those skilled in the art that various changes or modifications can be conceived within the scope of the technical idea described in the claims, and naturally, these are also within the technical scope of the present invention. It is understood that it belongs.

  For example, it goes without saying that the configurations of the above-described embodiments can be combined with each other.

1 Laminate tape 3 Metal layer 5 Resin layer 23 Wrap 25 Cable cores 30a, 30b, 30c, 30d Metallic cable 31 ...... Coated conducting wire 33 ...... Coarse winding cords 35, 35a, 35b ...... Tear cord 37 ...... Pressing tape 39 ...... Inner sheath 40 ...... Optical cable 41 ...... Tension member 43 ...... Spacer 45 ... Groove 47 ... Optical fiber tape core wire 49 ... Press-winding tape 53 ... Protective tape 60 ... Leakage coaxial cable 61 ... Inner conductor 62 ... Insulator 63 ... … External conductor 64 ……… Slot 65 ……… Presser winding 66 ……… Support wire

Claims (5)

Cable core part,
An outer cover provided on the outermost periphery of the cable core portion,
A laminate tape that is arranged inside the outer cover and is wound around the outer periphery of the cable core portion,
Equipped with,
The laminating tape is configured by laminating a resin layer and a metal layer,
In the resin layer, the base resin is polyethylene or polypropylene, maleic acid is added in an amount of 0.1% by mass or more and 2% by mass or less, and the softening temperature is 75 ° C. or more,
The said laminated tape is arrange | positioned so that the said resin layer may be faced outside, and it may be wound so that both ends may be wrapped in the circumferential direction.   The cable according to claim 1, wherein a wrap length of the laminate tape in a circumferential direction is 1 mm or more and 2.0 times or less of a cable outer diameter.   The cable according to claim 1 or 2, wherein the laminate tape is corrugated. A first laminating tape provided on the outer periphery of the cable core portion;
An inner sheath provided on the outer periphery of the first laminated tape;
A second laminating tape provided on the outer periphery of the inner sheath;
The outer cover provided on the outer periphery of the second laminated tape;
Equipped with,
The tear cord is arranged between the cable core portion and the first laminated tape, and between the inner sheath and the second laminated tape, respectively. Cable described in any of. An inner sheath on the outer circumference of the cable core portion, and a protective tape provided on the outer circumference of the inner sheath,
Equipped with,
The laminating tape is provided on the outer periphery of the protective tape,
The tear cord is arranged between the cable core portion and the inner sheath, and between the laminate tape and the protection tape, respectively. cable.

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