JP7316775B2 - cable - Google Patents

Description

TECHNICAL FIELD The present invention relates to a cable in which a laminate tape is wound around the outer periphery of a cable core.

2. Description of the Related Art Conventionally, a laminate tape composed of a metal layer and a resin layer has been used in communication cables and the like. According to such a laminate tape, it is possible to secure the tensile strength of the cable, and to impart flame retardancy, water impermeability, shielding properties, and the like (for example, Patent Documents 1 to 5).

JP-A-2000-241684 JP-A-2001-143543 JP-A-2001-60418 JP-A-7-122142 JP-A-7-335038

Cables must withstand ambient temperatures. For this reason, the cable is required to withstand environmental temperatures, and the upper limit has generally been 60°C. That is, it is required that the laminate tape does not soften even at 60° C. and that the waterproofness and the like do not deteriorate.

However, due to recent abnormal weather and globalization, the maximum daytime temperature record is about 41°C even in Japan, and even exceeds 50°C overseas. Furthermore, considering the temperature rise due to sunlight, the conventional environmental temperature resistance is not sufficient. If the tape is used at a temperature higher than the ambient temperature, the resin layer of the laminate tape may soften and the adhesion may be peeled off, resulting in a decrease in strength or the occurrence of protrusions at the wrap portion of the laminate tape.

Thus, there is a demand for cables with high environmental temperature resistance that can be used at higher temperatures. It wasn't.

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

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cable that is excellent in manufacturability, has a high softening temperature, and has high environmental temperature resistance.

In order to achieve the above-mentioned objects, the present invention provides a cable core portion, a jacket provided on the outermost circumference of the cable core portion, and a laminate disposed inside the jacket and wound around the outer circumference of the cable core portion. and a tape, wherein the laminated tape is configured by laminating a resin layer and a metal layer, and the resin layer includes polyethylene or polypropylene as a base resin and contains 0.1% by mass or more of maleic acid. It is added in mass % or less, has a softening temperature of 75 ° C. or more, and the laminate tape is arranged with the resin layer facing outward, and is wound so that both ends are wrapped in the circumferential direction. cable.

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

The wrap length of the laminate tape in the circumferential direction is preferably 1 mm or more and 2.0 times or less the outer diameter of the cable, and more preferably 1 mm or more and 1.5 times or less the outer diameter of the cable.
Only the metal layer without the resin layer may be provided only at the portions to be wrapped at both ends of the laminate tape, and both ends of the laminate tape may be electrically connected to form a cylinder.

The laminate tape may be corrugated.

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

the first laminate tape provided on the outer circumference of the cable core portion; the inner sheath provided on the outer circumference of the first laminate tape; the second laminate tape provided on the outer circumference of the inner sheath; and the outer covering provided on the outer periphery of the laminated tape of and between the cable core portion and the first laminated tape and between the inner sheath and the second laminated tape, respectively A tear string may be placed, and a protective tape may be placed in place.

According to the present invention, since the laminate tape composed of the metal layer and the resin layer is wound around the outer periphery of the cable core without gaps, high water impermeability can be ensured. In addition, by adding 0.1% by mass or more and 2% by mass or less of maleic acid to polyethylene or polypropylene, a softening temperature of 75 ° C. or more can be secured, and high environmental temperature resistance can be obtained, and JIS K6922 can be obtained. The melt flow rate specified by -2 is within a predetermined range, and manufacturing can be performed with less equipment changes to cope with high temperatures, and the productivity is also excellent.

In addition, if the wrap length in the circumferential direction of the wrap part is 1 mm or more, the wrap part will not peel off and a gap will not be created. The portion can be reduced, and can be reduced if it is less than 1.5 times the outer diameter of the cable.

Moreover, the flexibility of the cable can be enhanced by corrugating the laminate tape.

In addition, in the case of a cable having an inner sheath provided around the outer circumference of the cable core, if a tearing string is arranged between the inner sheath and the cable core and between the laminate tape and the inner sheath, tearing will occur. The cable core part can be easily taken out by the string.

In addition, by wrapping two layers of laminated tape around the outer circumference of the cable core, it is possible to secure a higher level of water impermeability. It is possible to protect from damage and from direct burial earth pressure. At this time, by arranging the tear string inside each of the two layers of laminate tape, the cable core portion can be more easily taken out by the tear string.

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

FIG. 2 is a cross-sectional view of the laminate tape 1; 3 is a perspective view of a metallic cable 30a using the laminate tape 1. FIG. FIG. 2 is a cross-sectional view of a metallic cable 30a using the laminate tape 1; FIG. 4 is an enlarged view of portion B in FIG. 3 ; 4 is a perspective view of a metallic cable 30b using the laminate tape 1. FIG. FIG. 3 is a cross-sectional view of a metallic cable 30c using the laminate tape 1; FIG. 3 is a cross-sectional view of a metallic cable 30d using the laminate tape 1; FIG. 2 is a cross-sectional view of an optical cable 40 using the laminate tape 1; Sectional drawing of the leaky coaxial cable 60. FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of a laminate tape 1. FIG. The laminate tape 1 has a resin layer 5 and a metal layer 3 laminated on the resin layer 5 . The laminate tape 1 is wound 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 aluminum alloys), stainless steel, copper (including copper alloys), 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). Moreover, the resin layer 5 may be laminated on both sides of the metal layer 3 .

The base resin of the resin layer 5 of the laminate 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 according to JIS K7196 (2012), for example.

Polyethylene or polypropylene constituting the resin layer 5 is krafted by adding 0.1% by mass or more and 2% by mass or less of maleic acid. Preferably, the polyethylene or polypropylene constituting the resin layer 5 contains 0.2% by mass or more and 1.5% by mass or less of maleic acid, more preferably 0.3% by mass or more and 0.6% by mass or less of maleic acid. It is desirable to add 9% by mass or more and 1.2% by mass or less. By doing so, the melt flow rate of polyethylene or polypropylene constituting 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 desirably, 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 will deteriorate. On the other hand, if the melt flow rate is too high, there is a possibility that a problem may occur in shape retention during production. The melt flow rate can be measured according to JIS K7210-1 (2014), for example.

The Shore D hardness of the resin layer 5 is desirably 45 or more. This is because if the Shore D hardness of the resin layer 5 is too low, the rigidity of the cable becomes low when used for the cable.

The laminate 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, it is possible to increase the tensile strength of the cable when used for the cable.

Moreover, it is desirable that the laminate tape 1 has a yield point stress of 5 MPa or more. By increasing the yield point stress of the laminate tape 1, the durability of the cable can be enhanced when the laminate tape 1 is used for the cable.

Although the thickness of the laminate tape 1 is not particularly limited, it is preferably 0.05 mm to 0.2 mm, for example. If the thickness of the laminate tape 1 is made thinner than this, the strength of the cable deteriorates. If the laminate tape 1 is made thicker than this, the strength increases, but new problems such as weight reduction arise.

Moreover, it is desirable that the thickness of the resin layer 5 is 0.03 mm to 0.40 mm. If the thickness of the resin layer 5 is made thinner than this, the adhesiveness is improved, but the production yield is deteriorated. Conversely, if the thickness of the resin layer 5 is increased more than this, a new problem such as deterioration of the environmental resistance of the cable arises.

The thickness ratio between the resin layer 5 and 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 variations of the laminate tape. Moreover, it is desirable that the peel strength between the metal layer 3 and the resin layer 5 is 2.9 N/mm ² or more.

Next, an example of a cable using the laminate 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 coated conductor wires 31, a pressing winding tape 37, a laminate tape 1, an outer covering 17, and the like, in this order from the inside. The coated conductor 31 is composed of a conductor and an insulating coating covering the conductor.

The conductor of the coated wire 31 is made of aluminum or copper, for example, and a single wire as shown in the figure or a stranded wire (not shown) 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 made of insulating resin. The coated conductor 31 including the conductor and the insulating coating may be used as a single wire, but two wires may be twisted together to form a pair wire, or four wires may be twisted together to form a quad wire.

A plurality of coated conductor wires 31 are bundled by a loose winding string 33 . A pressing winding tape 37 is further wrapped around the outer peripheries of the plurality of bundles of the plurality of coated conductor wires 31 . In the metallic cable 30a, the plurality of covered conductor wires 31 bundled with the pressing winding tape 37 are used as the cable core portion 25. As shown in FIG. Since the winding tape 37 only needs to bundle a plurality of coated copper wires 31, a loose winding string or the like may be used.

Here, in forming the cable core portion 25, a method of twisting pair wires and quad wires into a unit and further twisting the unit to form a unit, and a method of twisting a single core wire, a pair wire, and a quad wire in the central layer There are various methods such as twisting single-core wires, pair wires, and quad wires with the first and second layers on the upper layer.

The laminate tape 1 is wound around the outer periphery of the pressing tape 37 . The laminate tape 1 is wound vertically so that both ends in the width direction are wrapped in the circumferential direction. That is, the laminate tape 1 is wound around the outer circumference of the cable core portion 25 so that the axial direction of the cable core portion 25 and the longitudinal direction of the laminate tape 1 are aligned, and the wrap portions 23 at both ends of the laminate tape 1 are formed in a substantially linear shape. 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 circumference of the laminate tape 1 . That is, the laminate tape 1 wound around the outer circumference of the cable core portion 25 is arranged inside the jacket 17 , and the jacket 17 is provided on the outermost circumference of the cable core portion 25 .

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

In the metallic cable 30a, the laminate tape 1 functions as a moisture permeation prevention layer. That is, a part of the resin layer 5 of the laminate tape 1 adheres both ends of the laminate tape 1 in the width direction, and the laminate tape 1 and the jacket 17 are adhered to each other, thereby restricting the entry 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 to allow the metal layers 3 to conduct at both ends in the width direction, thereby using the entire laminate tape as a conductor as a metal tube.

The jacket 17 may have two or more layers instead of one layer. In addition, the laminated tape 1 may be used in two or more layers, and apart from the laminated tape 1, a metal exterior suitable for the purpose may be provided as another layer.

A tear string 35 is arranged between the laminate tape 1 and the cable core portion 25 of the metallic cable 30a. By pulling out the tear string 35, the laminated tape 1 and the jacket 17 can be torn, and the covered conductor wire 31 inside can be taken out.

In the metallic cable 30a, the number of coated conductors 31 constituting the cable core portion 25 and the number of bundles are not limited to the illustrated example. Furthermore, it may be a composite cable in which optical fibers or the like are arranged.

As described above, the laminate tape 1 has the wrap portion 23 . FIG. 4 is an enlarged view of the B portion in FIG. 3 and an enlarged view of the wrap portion 23. As shown in FIG. The laminate tape 1 is wound around the outer periphery of the cable core portion 25 with the resin layer 5 facing outward. That is, the jacket 17 and the resin layer 5 are bonded together. Also, in the wrap portion 23, the metal layer 3 on the outer end of the wrap portion 23 and the resin layer 5 on the inner end are bonded.

Note that the laminate tape 1 does not have to be provided with an adhesive layer. In this case, at the wrap portion 23, the ends of the laminate tape 1 simply overlap each other, and some deviation is allowed. Also, the resin layer 5 and the jacket 17 may simply be in contact with each other and may not be bonded together.

Here, the wrap length (B in the drawing) of the wrap portion 23 in the circumferential direction is preferably 1 mm or more and 2.0 times or less the outer diameter of the metallic cable 30a, more preferably 1.5 times the outer diameter. It should be no more than double. If the wrap length is too short, the water impermeability may be deteriorated due to 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 will become thick and the flexibility will be affected.

Next, a method for manufacturing the metallic cable 30a will be described. A coated conductor 31 is formed by forming an insulating coating on the outer periphery of the conductor, for example, by extrusion. Next, the coated conductors 31 are twisted by a twisting assembly machine to twist paired wires, quad wires, units and the same, or twist multiple layers of paired wires or quad wires, and bundle them with a loose winding string 33 as necessary. , a plurality of bundles are collectively wound with a pressing winding tape 37 to form a cable core portion 25. - 特許庁The pressing winding tape 37 may be a coarse winding string or the like as long as it can bundle the collected cores. A laminate tape 1 obtained by laminating a resin layer 5 and a metal layer 3 or the like in advance is supplied, and a forming machine or the like is used to form a vertical winding around the outer periphery of a press winding tape 37 (cable core portion 25) to form a moisture permeation prevention layer. be done.

A jacket 17 is extruded and integrated with the perimeter of the moisture permeable layer formed by the laminate tape 1 . Extrusion and forming may be a series of simultaneous processes. The metallic cable 30a is manufactured by the above.

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

In addition, even if the softening temperature of the resin layer 5 is increased, the melt flow rate can be ensured to be at least a predetermined value, so the productivity is also 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 are denoted by the same reference numerals as in FIGS. 1 to 4, and overlapping descriptions are omitted.

The metallic cable 30b has substantially the same configuration as the metallic cable 30a, but differs in that the laminate 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 made smooth without applying a corrugated shape.

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

In this manner, the laminate tape 1 can be used after being corrugated as 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 laminate tape 1 is spirally wound instead of longitudinally wound.

In the spiral winding, one sheet of the laminate tape 1 may be used and wound so that one end in the width direction of the laminate tape 1 overlaps the opposite end in the width direction of the laminate tape 1 one round before. In addition, one sheet of the laminate tape 1 is spirally wound at intervals, and one or both ends of the other laminate tape 1 in the width direction are overlapped with the previously wound laminate tape 1 so as to cover the cable with a large number of sheets. It can also be wrapped in a spiral winding. Thus, the laminate tape 1 may be spirally wound instead of longitudinally wound.

Next, a fourth embodiment will be described. FIG. 7 is a cross-sectional view showing the metallic cable 30d. Metallic cable 30 d has an inner sheath 39 . Similar to the metallic cables 30a, 30b, and 30c, the metallic cable 30d has a plurality of covered conductor wires 31 bundled with a loosely wound string 33, and a pressing winding tape 37 is wound around the outer periphery of the plurality of bundles. As long as the presser wrap can be bundled including the bundle, a loosely wound string or the like may be used. In addition, the first laminate tape 1 forms a wrap portion 23 and is longitudinally wound around the outer periphery of the pressure winding tape 37 (cable core portion 25). As described above, the laminate tape 1 may be spirally wound, but in the following description, an example in which the laminate tape 1 is longitudinally wound will be described.

An internal sheath 39 is formed around the outer periphery of the first laminate tape 1 in the metallic cable 30d. The inner sheath 39 is molded, for example by extrusion. A second laminate tape 1 is further wound around the inner sheath 39 .

A jacket 17 is provided on the outer circumference of the outer second laminate tape 1 and on the outermost circumference of the metallic cable 30d. That is, the second laminate tape 1 is arranged inside the jacket 17 . The jacket 17 is provided so as to cover the outer periphery of the second laminate tape 1 and adheres to the resin layer 5 of the second laminate tape 1 . That is, the metallic cable 30d has two resin layers of the outer cover 17 and the inner sheath 39, and the laminate tape 1 is wound in two layers on the inner sides of the outer cover 17 and the inner sheath 39, respectively. In addition, in the case of having two resin layers of the outer cover 17 and the inner sheath 39, the laminate tape 1 may be composed of only one layer inside either the outer cover 17 or the inner sheath 39. In this case, the laminated tape The inside of the outer jacket 17 or the inner sheath 39 where no 1 is placed may be provided with a cladding suitable for the purpose. As an example of the exterior, iron may be wrapped around it as a countermeasure against electromagnetic induction, or stainless steel may be wrapped around it as a countermeasure against wildlife damage.

In this way, when the inner sheath 39 is provided, the inner sheath 39 and the outer second laminate tape 37 (cable core portion 25) are placed between the first laminate tape 1 on the inner peripheral side and the pressure winding tape 37 (cable core portion 25). Between the tapes 1 are arranged tearing cords 35a, 35b respectively. By doing so, the inner sheath 39 can be exposed by tearing the outer laminate tape 1 and the jacket 17 by pulling out the tear string 35b. Further, by pulling out the tear string 35a, the inner laminate tape 1 and the inner sheath 39 can be torn, and the coated conductor wire 31 inside can be taken out.

In this embodiment, the cable core portion 25 is formed up to the pressing tape 37 , but the cable core portion 25 may include the inner sheath 39 . In either case, the laminate tape 1 is wound around the outer periphery of the cable core. It should be noted that the inside of the inner sheath 39 may be made of only the resin without providing the laminate tape 1 .

By applying the laminate tape 1 to the metallic cables 30a, 30b, 30c, and 30d in this manner, water impermeability can be ensured, and a metallic cable excellent in environmental resistance can be obtained.

Further, like the metallic cable 30d, the inner sheath 39 is provided and the tear strings 35a and 35b are provided at respective parts, so that the outer cover 17 and the like and the inner sheath 39 and the like can be torn separately. is easy, and breakage of the tear string can be suppressed.

Next, a fifth embodiment will be described. FIG. 8 is a cross-sectional view showing the optical cable 40. As shown in FIG. 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 laminate tape 1, an outer jacket 17, and the like.

The spacer 43 is made of flexible resin. A plurality of grooves 45 are provided on the outer circumference of the spacer 43 , and the grooves 45 are formed in a spiral shape in one direction with respect to the longitudinal direction of the spacer 43 , or in both directions in an SZ shape repeatedly and continuously. A tension member 41 is provided in the center of the spacer 43 . A plurality of optical fiber tape core wires 47 are accommodated in the grooves 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 UV resin.

A pressure winding tape 49 is wound around the outer periphery of the spacer 43 by vertical attachment or spiral winding. An internal sheath 39 is provided on the outer periphery of the pressing tape 49 (cable core portion 25). The inner sheath 39 is formed, for example, by extrusion. A protective tape 53 is wrapped around 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 adhered.

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

In the present embodiment, the cable core portion 25 is formed up to the pressing 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 formed without using the protective tape 53. It is good also as a cable core part including. As described above, in either case, the laminate tape 1 is wound around the outer circumference of the cable core. That is, in the present invention, the fact that the laminate tape 1 is wound around the outer periphery of the cable core part includes the provision of another structure such as the protective tape 53 between the cable core part and the laminate tape 1 . Furthermore, as with the metallic cable described above, the laminate tape 1 may be smooth or corrugated, and both longitudinal winding and spiral winding are possible. It may be covered.

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

In the optical cable 40 as well, a tear string is arranged between the laminate tape 1 and the cable core portion 25 . In the illustrated example, a tearing string 35a is arranged between the pressing tape 49 (cable core portion 25) and the inner sheath 39, and a tearing string 35b is arranged between the protective tape 53 and the laminate tape 1. . By pulling out the tearing string 35b, the laminate tape 1 and the jacket 17 can be torn to expose the internal protective tape 53 and the like. Further, by pulling out the tear string 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, number and depth of the grooves 45, and the configuration of the optical fiber ribbon 47 and the like are not limited to the illustrated example. Also, the inner sheath 39 and the protective tape 53 are not necessarily required.

By applying the laminate tape 1 to the optical cable 40 in this manner, it is possible to obtain an optical cable that is excellent in environmental resistance as well as ensuring water impermeability. It is also possible to form the resin layer 5 so that the wrap portion 23 of the laminate tape 1 can easily adhere to it, thereby further improving the water impermeability.

In addition, by wrapping the protective tape 53 between the tearing string 35b and the inner sheath 39, the tearing string 35b can be prevented from biting into or adhering to the inner sheath 39, making it difficult to pull it out. can be done.

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

The internal conductor 61 has a pipe-like or corrugated corrugated shape, and can be made of aluminum or copper, for example. An insulator 62 is applied over the inner conductor 61 . As for the insulator 62, one or more 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 adjusts the dielectric constant and is expected to function as a base around which the outer conductor is wound. For example, a dielectric such as polyethylene can be used. Also, the insulator 62 may be formed by extruding foamed polyethylene or the like with an adjusted foaming rate on the inner conductor. An outer conductor 63 having a slot 64 is longitudinally wound on the insulator 62, and a pressure winding 65 is spirally wound thereon. Here, the laminate tape 1 can be used for the outer conductor 63, and the laminate tape 1 may be corrugated as in this embodiment. A structure in which the inner conductor 61 and the insulator 62 are used as a cable core portion and the laminate tape 1 is wound thereon is the same as that of the metallic cable and the optical fiber cable described above. A cable with a support line also has a support line 66 . If the support wire 66 is prepared separately from the cable, a round leaky coaxial cable without the support wire 66 may be used.

As described above, the laminate tape 1 provided with the slot 64 as the outer conductor 63 is wrapped around the outer circumference of the insulator 62 by longitudinally winding. In the wrap portion 23 (not shown) of the laminate tape 1, only the resin layer 5 (not shown) in the wrap range is removed to form the laminate tape 1, thereby conducting at both ends of the laminate tape 1, and the laminate tape 1 is electrically connected. can be tubular. In addition, by using the laminate tape 1, the resin layer 5 serves as a strong support for the metal layer 3, and the environmental resistance performance can be improved. It can be used even in high temperature environments.

In FIG. 9, the laminate tape 1 is wound on the insulator 62 as the outer conductor 63, but the insulator 62 is covered with a pressure winding for protection and heat resistance, and the outer conductor 63 is laminated tape on the pressure winding. 1 may be wrapped.

Thus, the laminate 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 influenced by the above-described embodiments. It is obvious that a person skilled in the art can conceive various modifications or modifications within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. be understood to belong to

For example, it goes without saying that each configuration of each embodiment described above can be combined with each other.

Reference Signs List 1 Laminated tape 3 Metal layer 5 Resin layer 17 Jacket 23 Wrap portion 25 Cable core portions 30a, 30b, 30c, 30d Metallic cable 31 …… Covered conductor 33 …… Roughly wound cords 35, 35a, 35b …… Tear cord 37 …… Press winding tape 39 …… Internal sheath 40 …… Optical cable 41 …… Tension member 43 ………… Spacer 45 Groove 47 Optical fiber tape core wire 49 Pressing tape 53 Protective tape 60 Leaky coaxial cable 61 Inner conductor 62 Insulator 63 . . . Outer conductor 64 .. Slot 65 .

Claims (7)

a cable core;
a jacket provided on the outermost circumference of the cable core portion;
a laminate tape disposed inside the jacket and wound around the outer periphery of the cable core;
and
The laminate tape is configured by laminating a resin layer and a metal layer,
The base resin of the resin layer is polyethylene or polypropylene (excluding ethylene/vinyl acetate copolymer) and contains 0.00 maleic acid. It is added at 2 % by mass or more and 2% by mass or less, and the softening temperature is 75 ° C. or higher,
A cable according to claim 1, wherein the laminate tape is arranged with the resin layer facing outward, and is wound so that both ends are wrapped in a circumferential direction. 2. The cable according to claim 1, wherein the wrap length of said laminate tape in the circumferential direction is 1 mm or more and 2.0 times or less of the outer diameter of the cable. 3. The cable according to claim 1, wherein the laminate tape is corrugated. the first laminate tape provided on the outer periphery of the cable core;
an inner sheath provided around the outer periphery of the first laminate tape;
the second laminate tape provided on the outer periphery of the inner sheath;
the outer covering provided on the outer periphery of the second laminate tape;
and
3. A tear string is arranged between the cable core portion and the first laminate tape and between the inner sheath and the second laminate tape, respectively. A cable as described in any of an inner sheath on the outer periphery of the cable core portion; and a protective tape provided on the outer periphery of the inner sheath;
and
The laminated tape is provided on the outer periphery of the protective tape,
4. The cable according to any one of claims 1 to 3, wherein a tear string is arranged between the cable core portion and the inner sheath and between the laminate tape and the protective tape. cable. The cable according to any one of claims 1 to 5, wherein the laminate tape as a whole has a tensile strength at break of 10 MPa or more. The laminate tape has a peel strength of 2.9 N/m between the metal layer and the resin layer.
7. The cable according to any one of claims 1 to 6, which is ^m2 or more.

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