CN102842386B - Dual-core cable and manufacturing method thereof - Google Patents
Dual-core cable and manufacturing method thereof Download PDFInfo
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- CN102842386B CN102842386B CN201210341557.2A CN201210341557A CN102842386B CN 102842386 B CN102842386 B CN 102842386B CN 201210341557 A CN201210341557 A CN 201210341557A CN 102842386 B CN102842386 B CN 102842386B
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Abstract
The invention belongs to the technical field of wires and cables, and provides a dual-core cable. The dual-core cable comprises a first conductor, a second conductor and a sheathing layer, and is characterized by further comprising a cylindrical infill in the center, a first isolating bar and a second isolating bar, wherein the first conductor, the second conductor, the first isolating bar and the second isolating bar are all clung to the infill; the first isolating bar and the second isolating bar isolate the first conductor from the second conductor, and the first isolating bar, the second conductor, the second isolating bar and the first conductor are sequentially connected; the isolating bars and the sheathing layer are integrally formed; the first isolating bar and the second isolating bar protrude toward the infill from the inner wall of the sheathing layer; and the sheathing layer wraps the conductors; on any cross section, the curvature of the surfaces of the first isolating bar, the second isolating bar, the first conductor and the second conductor, which are clung to the outer surface of the infill, are equal. The dual-core cable has the benefits that the consumption of the sheathing layer of the product is low, the external diameter is smaller, all costs are lower, the production procedure is simpler and the production speed is higher.
Description
The application is that application number is: 201110226793.5, and the applying date is: on August 8th, 2011, denomination of invention is: the dividing an application of twin core cable and preparation method thereof.
Technical field
The invention belongs to technical field of electric wires and cables, especially twin core cable and preparation method thereof.
Background technology
In prior art, cable is widely used, 2 conventional core cables as depicted in figs. 1 and 2, Fig. 1 is schematic perspective view, Fig. 2 is the front view of Fig. 1, and this cable is that the restrictive coating 5 of living the first insulated wire cores and the second insulated wire cores by the first insulated wire cores of parallel placement and the second insulated wire cores and integral coating forms; The first insulated wire cores consists of the first insulating barrier 11 that is positioned at the first inner conductor 12 and envelopes the first conductor; The second insulated wire cores consists of the second insulating barrier 21 that is positioned at the second inner conductor 22 and envelopes the second conductor.Because this kind of cable is for transmitting electric load, in order to reach insulating requirements, common the first insulating barrier and the second insulating barrier need to reach the thickness of industry standard regulation, and under same voltage withstand class, along with the increase of ampacity, the thickness of insulating barrier must thicken; On the other hand, in order to make cable there is certain mechanical strength and anti-wear performance, therefore restrictive coating also needs the thickness that reaches certain.Therefore, the cost of this kind of cable is higher.On the one hand, the conductor of this kind of cable forms by tiny wire is stranded again, therefore produce, a cable need to be made through 2 synnemas, 2 minor insulation cores, 1 sheath extrudes; Because the speed that insulated wire cores is made is slower, therefore, restricted speed of production.
Summary of the invention
In order to address the above problem, one of object of the present invention is to provide the twin core cable that a kind of cost is cheaper; Two of object of the present invention is that the insulated wire cores making step that reduces cable makes speed of production faster; Three of object of the present invention is to disclose the manufacture method of this kind of cable, and they are realized by the following technical solutions.
A twin core cable, includes the first conductor 12, the second conductor 22, restrictive coating 5; It is characterized in that also comprising one is positioned at central authorities and is columniform obturator 1, one piece the first isolating bar 61, second isolating bar 62; The first conductor, the second conductor, the first isolating bar, the second isolating bar are all close to obturator; The first isolating bar, the second isolating bar are kept apart the first conductor and the second conductor, and the first isolating bar, the second conductor, the second isolating bar, the first conductor are connected successively; On arbitrary cross section, the upper surface 611 of the first isolating bar and lower surface 612 all equate with the curvature of lower surface 612 to center curvature and the upper surface 611 of obturator; On arbitrary cross section, the upper surface of the second isolating bar all equates to the center curvature of obturator and the curvature on two surfaces with lower surface; On arbitrary cross section, the upper surface of the first conductor all equates to the center curvature of obturator and the curvature on two surfaces with lower surface; On arbitrary cross section, the upper surface of the second conductor all equates to the center curvature of obturator and the curvature on two surfaces with lower surface; Restrictive coating envelopes the first isolating bar, the second isolating bar, the first conductor and the second conductor.
Twin core cable described above, is characterized in that being also coated with protective layer outside the first isolating bar, the second isolating bar, the first conductor and the second conductor, and within protective layer is positioned at restrictive coating.
Twin core cable described above, is characterized in that described protective layer is mica tape or PVC band or PP band.
A twin core cable, includes the first conductor 12, the second conductor 22, restrictive coating 5; It is characterized in that also comprising one is positioned at central authorities and is columniform obturator 1, one piece the first isolating bar 61, second isolating bar 62; The first conductor, the second conductor, the first isolating bar, the second isolating bar are all close to obturator; The first isolating bar, the second isolating bar are kept apart the first conductor and the second conductor, and the first isolating bar, the second conductor, the second isolating bar, the first conductor are connected successively; The first isolating bar, the second isolating bar and restrictive coating are formed in one; The first isolating bar, the second isolating bar protrude to obturator direction from the inwall of restrictive coating; Restrictive coating envelopes the first conductor and the second conductor; On arbitrary cross section, the surperficial curvature that the first isolating bar, the second isolating bar, the first conductor, the second conductor are affixed with obturator appearance separately equates.
Any twin core cable described above, the material that it is characterized in that described obturator is flame-proof polyethylene or low-smoke halogen-free polyolefin or flame-proof PVC or polypropylene or poly-low density polyethylene (LDPE) or LLDPE or medium density polyethylene or high density polyethylene (HDPE).
Any twin core cable described above, the material that it is characterized in that described the first isolating bar is flame-proof polyethylene or low-smoke halogen-free polyolefin or flame-proof PVC or polypropylene or poly-low density polyethylene (LDPE) or LLDPE or medium density polyethylene or high density polyethylene (HDPE).
Any twin core cable described above, the material that it is characterized in that described the second isolating bar is flame-proof polyethylene or low-smoke halogen-free polyolefin or flame-proof PVC or polypropylene or poly-low density polyethylene (LDPE) or LLDPE or medium density polyethylene or high density polyethylene (HDPE).
Any twin core cable described above, the material that it is characterized in that described restrictive coating is flame-proof polyethylene or low-smoke halogen-free polyolefin or flame-proof PVC or polypropylene or poly-low density polyethylene (LDPE) or LLDPE or medium density polyethylene or high density polyethylene (HDPE).
Any twin core cable described above, is characterized in that described the first conductor is metal bar or the complex that formed by the stranded moulding of many one metal wires.
Any twin core cable described above, is characterized in that described the second conductor is metal bar or the composite conductor that formed by the stranded moulding of many one metal wires.
Make a method for twin core cable, it is characterized in that it comprises step:
Getting two metal bars forms the first conductor, the moulding of other many one metal wires synnema is formed to the step of the second conductor again as the step of the first conductor and the second conductor or by the moulding of many one metal wires synnema;
By plastic extruding machine, form the step of obturator;
By plastic extruding machine, form the step of the first isolating bar;
By plastic extruding machine, form the step of the second isolating bar;
By the mould being arranged on sheath extruding machine, obturator is placed in to central authorities; The first conductor, the first isolating bar, the second conductor, the second isolating bar are placed on outside obturator successively and are close to obturator; At the first conductor, the first isolating bar, the second conductor, the second isolating bar, extrude the step of restrictive coating outward simultaneously.
Make a method for twin core cable, it is characterized in that it comprises step:
Getting two metal bars forms the first conductor, the moulding of other many one metal wires synnema is formed to the step of the second conductor again as the step of the first conductor and the second conductor or by the moulding of many one metal wires synnema;
By plastic extruding machine, form the step of obturator;
By plastic extruding machine, form the step of the first isolating bar;
By plastic extruding machine, form the step of the second isolating bar;
By the mould being arranged on sheath extruding machine, obturator is placed in to central authorities; The first conductor, the first isolating bar, the second conductor, the second isolating bar are placed on outside obturator successively and are close to obturator; At the first conductor, the first isolating bar, the second conductor, the second isolating bar outer wrapping one protective layer; At the first conductor, the first isolating bar, the second conductor, the second isolating bar, extrude the step of restrictive coating outward simultaneously.
Make a method for twin core cable, it is characterized in that it comprises step:
Getting two metal bars forms the first conductor, the moulding of other many one metal wires synnema is formed to the step of the second conductor again as the step of the first conductor and the second conductor or by the moulding of many one metal wires synnema;
By plastic extruding machine, form the step of obturator;
By plastic extruding machine, form the step of the first isolating bar;
By the first isolating bar being cut to the step that forms the second isolating bar: the first isolating bar is cut and forms the second isolating bar or the first isolating bar after-combustion is coiled on tool to another along symmetry axis, cut off during to certain length, remaining is the second isolating bar;
By the mould being arranged on sheath extruding machine, obturator is placed in to central authorities; The first conductor, the first isolating bar, the second conductor, the second isolating bar are placed on outside obturator successively and are close to obturator; At the first conductor, the first isolating bar, the second conductor, the second isolating bar, extrude the step of restrictive coating outward simultaneously.
Make a method for twin core cable, it is characterized in that it comprises step:
Getting two metal bars forms the first conductor, the moulding of other many one metal wires synnema is formed to the step of the second conductor again as the step of the first conductor and the second conductor or by the moulding of many one metal wires synnema;
By plastic extruding machine, form the step of obturator;
By plastic extruding machine, form the step of the first isolating bar;
By the first isolating bar being cut to the step that forms the second isolating bar: the first isolating bar is cut and forms the second isolating bar or the first isolating bar after-combustion is coiled on tool to another along symmetry axis, cut off during to certain length, remaining is the second isolating bar;
By the mould being arranged on sheath extruding machine, obturator is placed in to central authorities; The first conductor, the first isolating bar, the second conductor, the second isolating bar are placed on outside obturator successively and are close to obturator; At the first conductor, the first isolating bar, the second conductor, the second isolating bar outer wrapping one protective layer; At the first conductor, the first isolating bar, the second conductor, the second isolating bar, extrude the step of restrictive coating outward simultaneously.
Make a method for twin core cable, it is characterized in that it comprises step:
Getting two metal bars forms the first conductor, the moulding of other many one metal wires synnema is formed to the step of the second conductor again as the step of the first conductor and the second conductor or by the moulding of many one metal wires synnema;
By plastic extruding machine, form the step of obturator;
Form the step of twin core cable: mould is arranged on sheath extruding machine, obturator is placed in to the filling body opening that is arranged in mould central authorities, by the first conductor, the second conductor is placed on respectively among first conductor bores and the second conductor bores of mould, the first conductor bores and the second conductor bores are all positioned at fills body opening outside, the first conductor bores and the second conductor bores are disconnected mutually, the first conductor bores, the second conductor bores does not communicate with filling body opening, forming the wall body of filling the wall body of body opening and forming the first conductor bores connects together, forming the wall body of filling the wall body of body opening and forming the second conductor bores connects together, and between the wall body of the wall body of the first conductor bores and the second conductor bores, there are two gaps, sheath is extruded while forming restrictive coating on the first conductor and the second conductor, gap has formed the first isolating bar and the second isolating bar, and two isolating bars are separated by the first conductor and the second conductor, the first isolating bar, the second isolating bar and restrictive coating are integrated.
In product of the present invention, the first conductor and the second conductor synnema are shaped to unique shape and are separated by the first isolating bar and the second isolating bar, extrusion molding restrictive coating outside again, so in the present invention, the consumption of restrictive coating greatly reduces, and product external diameter is less, cost is lower.The inventive method is simple, and operation is few, and has omitted slow-paced insulated wire cores manufacturing process, therefore speed of production is faster, production cost is lower.
The present invention has following beneficial effect: the consumption of product restrictive coating is few, and external diameter is thinner, and every cost is lower, and production process is simpler, speed is faster.
Accompanying drawing explanation
Fig. 1 is the part schematic perspective view of the twin core cable of prior art.
Fig. 2 is the front view of Fig. 1.
Fig. 3 is the perspective view that the invention process example 1 local solution is cut open.
Fig. 4 is the perspective view of the partly cut-away of the first isolating bar of using in the invention process example 1.
Fig. 5 is the front view after Fig. 4 amplifies.
Fig. 6 is the front view after Fig. 3 amplifies.
Fig. 7 is the perspective view that the invention process example 2 local solutions are cut open.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.Embodiment 1, embodiment 2 are the embodiment of product of the present invention; The embodiment that embodiment 3～embodiment 7 is the inventive method.
Embodiment 1
Ask for an interview Fig. 3 to Fig. 6, and in conjunction with Fig. 1 and Fig. 2, a kind of twin core cable, includes the first conductor 12, the second conductor 22, restrictive coating 5; It is characterized in that also comprising one is positioned at central authorities and is columniform obturator 1, one piece the first isolating bar 61, second isolating bar 62; The first conductor, the second conductor, the first isolating bar, the second isolating bar are all close to obturator; The first isolating bar, the second isolating bar are kept apart the first conductor and the second conductor, and the first isolating bar, the second conductor, the second isolating bar, the first conductor are connected successively; On arbitrary cross section, the upper surface 611 of the first isolating bar and lower surface 612 all equate with the curvature of lower surface 612 to center curvature and the upper surface 611 of obturator; On arbitrary cross section, the upper surface of the second isolating bar all equates to the center curvature of obturator and the curvature on two surfaces with lower surface; On arbitrary cross section, the upper surface of the first conductor all equates to the center curvature of obturator and the curvature on two surfaces with lower surface; On arbitrary cross section, the upper surface of the second conductor all equates to the center curvature of obturator and the curvature on two surfaces with lower surface; Restrictive coating envelopes the first isolating bar, the second isolating bar, the first conductor and the second conductor.
Twin core cable described above, is characterized in that being also coated with protective layer outside the first isolating bar, the second isolating bar, the first conductor and the second conductor, and within protective layer is positioned at restrictive coating.
Twin core cable described above, is characterized in that described protective layer is mica tape or PVC band or PP band.
Embodiment 2
Ask for an interview Fig. 7, and in conjunction with Fig. 1 to Fig. 6, a kind of twin core cable, includes the first conductor 12, the second conductor 22, restrictive coating 5; It is characterized in that also comprising one is positioned at central authorities and is columniform obturator 1, one piece the first isolating bar 61, second isolating bar 62; The first conductor, the second conductor, the first isolating bar, the second isolating bar are all close to obturator; The first isolating bar, the second isolating bar are kept apart the first conductor and the second conductor, and the first isolating bar, the second conductor, the second isolating bar, the first conductor are connected successively; The first isolating bar, the second isolating bar and restrictive coating are formed in one; The first isolating bar, the second isolating bar protrude to obturator direction from the inwall of restrictive coating; Restrictive coating envelopes the first conductor and the second conductor; On arbitrary cross section, the surperficial curvature that the first isolating bar, the second isolating bar, the first conductor, the second conductor are affixed with obturator appearance separately equates.
Any twin core cable described above, the material that it is characterized in that described obturator is flame-proof polyethylene or low-smoke halogen-free polyolefin or flame-proof PVC or polypropylene or poly-low density polyethylene (LDPE) or LLDPE or medium density polyethylene or high density polyethylene (HDPE).
Any twin core cable described above, the material that it is characterized in that described the first isolating bar is flame-proof polyethylene or low-smoke halogen-free polyolefin or flame-proof PVC or polypropylene or poly-low density polyethylene (LDPE) or LLDPE or medium density polyethylene or high density polyethylene (HDPE).
Any twin core cable described above, the material that it is characterized in that described the second isolating bar is flame-proof polyethylene or low-smoke halogen-free polyolefin or flame-proof PVC or polypropylene or poly-low density polyethylene (LDPE) or LLDPE or medium density polyethylene or high density polyethylene (HDPE).
Any twin core cable described above, the material that it is characterized in that described restrictive coating is flame-proof polyethylene or low-smoke halogen-free polyolefin or flame-proof PVC or polypropylene or poly-low density polyethylene (LDPE) or LLDPE or medium density polyethylene or high density polyethylene (HDPE).
Any twin core cable described above, is characterized in that described the first conductor is metal bar or the complex that formed by the stranded moulding of many one metal wires.
Any twin core cable described above, is characterized in that described the second conductor is metal bar or the composite conductor that formed by the stranded moulding of many one metal wires.
Any twin core cable described above, is characterized in that described the first isolating bar and the cross section of the second isolating bar can be identical or for different.
Following table be a kind of scheme of the present invention typical outer diameter compared with the prior art, as can be seen from the table, the present invention has advantage aspect the taking of space, in addition, through accurate Calculation, cost can be saved greatly.
Embodiment 3
Make a method for twin core cable, it is characterized in that it comprises step:
Getting two metal bars forms the first conductor, the moulding of other many one metal wires synnema is formed to the step of the second conductor again as the step of the first conductor and the second conductor or by the moulding of many one metal wires synnema;
By plastic extruding machine, form the step of obturator;
By plastic extruding machine, form the step of the first isolating bar;
By plastic extruding machine, form the step of the second isolating bar;
By the mould being arranged on sheath extruding machine, obturator is placed in to central authorities; The first conductor, the first isolating bar, the second conductor, the second isolating bar are placed on outside obturator successively and are close to obturator; At the first conductor, the first isolating bar, the second conductor, the second isolating bar, extrude the step of restrictive coating outward simultaneously.
Embodiment 4
Make a method for twin core cable, it is characterized in that it comprises step:
Getting two metal bars forms the first conductor, the moulding of other many one metal wires synnema is formed to the step of the second conductor again as the step of the first conductor and the second conductor or by the moulding of many one metal wires synnema;
By plastic extruding machine, form the step of obturator;
By plastic extruding machine, form the step of the first isolating bar;
By plastic extruding machine, form the step of the second isolating bar;
By the mould being arranged on sheath extruding machine, obturator is placed in to central authorities; The first conductor, the first isolating bar, the second conductor, the second isolating bar are placed on outside obturator successively and are close to obturator; At the first conductor, the first isolating bar, the second conductor, the second isolating bar outer wrapping one protective layer; At the first conductor, the first isolating bar, the second conductor, the second isolating bar, extrude the step of restrictive coating outward simultaneously.
Embodiment 5
Make a method for twin core cable, it is characterized in that it comprises step:
Getting two metal bars forms the first conductor, the moulding of other many one metal wires synnema is formed to the step of the second conductor again as the step of the first conductor and the second conductor or by the moulding of many one metal wires synnema;
By plastic extruding machine, form the step of obturator;
By plastic extruding machine, form the step of the first isolating bar;
By the first isolating bar being cut to the step that forms the second isolating bar: the first isolating bar is cut and forms the second isolating bar or the first isolating bar after-combustion is coiled on tool to another along symmetry axis, cut off during to certain length, remaining is the second isolating bar;
By the mould being arranged on sheath extruding machine, obturator is placed in to central authorities; The first conductor, the first isolating bar, the second conductor, the second isolating bar are placed on outside obturator successively and are close to obturator; At the first conductor, the first isolating bar, the second conductor, the second isolating bar, extrude the step of restrictive coating outward simultaneously.
Embodiment 6
Make a method for twin core cable, it is characterized in that it comprises step:
Getting two metal bars forms the first conductor, the moulding of other many one metal wires synnema is formed to the step of the second conductor again as the step of the first conductor and the second conductor or by the moulding of many one metal wires synnema;
By plastic extruding machine, form the step of obturator;
By plastic extruding machine, form the step of the first isolating bar;
By the first isolating bar being cut to the step that forms the second isolating bar: the first isolating bar is cut and forms the second isolating bar or the first isolating bar after-combustion is coiled on tool to another along symmetry axis, cut off during to certain length, remaining is the second isolating bar;
By the mould being arranged on sheath extruding machine, obturator is placed in to central authorities; The first conductor, the first isolating bar, the second conductor, the second isolating bar are placed on outside obturator successively and are close to obturator; At the first conductor, the first isolating bar, the second conductor, the second isolating bar outer wrapping one protective layer; At the first conductor, the first isolating bar, the second conductor, the second isolating bar, extrude the step of restrictive coating outward simultaneously.
Embodiment 7
Make a method for twin core cable, it is characterized in that it comprises step:
Getting two metal bars forms the first conductor, the moulding of other many one metal wires synnema is formed to the step of the second conductor again as the step of the first conductor and the second conductor or by the moulding of many one metal wires synnema;
By plastic extruding machine, form the step of obturator;
Form the step of twin core cable: mould is arranged on sheath extruding machine, obturator is placed in to the filling body opening that is arranged in mould central authorities, by the first conductor, the second conductor is placed on respectively among first conductor bores and the second conductor bores of mould, the first conductor bores and the second conductor bores are all positioned at fills body opening outside, the first conductor bores and the second conductor bores are disconnected mutually, the first conductor bores, the second conductor bores does not communicate with filling body opening, forming the wall body of filling the wall body of body opening and forming the first conductor bores connects together, forming the wall body of filling the wall body of body opening and forming the second conductor bores connects together, and between the wall body of the wall body of the first conductor bores and the second conductor bores, there are two gaps, sheath is extruded while forming restrictive coating on the first conductor and the second conductor, gap has formed the first isolating bar and the second isolating bar, and two isolating bars are separated by the first conductor and the second conductor, the first isolating bar, the second isolating bar and restrictive coating are integrated.
In product of the present invention, the first conductor and the second conductor synnema are shaped to unique shape and are separated by the first isolating bar and the second isolating bar, extrusion molding restrictive coating outside again, so in the present invention, the consumption of restrictive coating greatly reduces, and product external diameter is less, cost is lower.The inventive method is simple, and operation is few, and has omitted slow-paced insulated wire cores manufacturing process, therefore speed of production is faster, production cost is lower.
The present invention has following beneficial effect: the consumption of product restrictive coating is few, and external diameter is thinner, and every cost is lower, and production process is simpler, speed is faster.
The present invention is not limited to above-mentioned preferred forms, should be appreciated that design of the present invention can be by other various forms enforcement utilizations, and they drop in protection scope of the present invention equally.
Claims (2)
1. make a method for twin core cable, described twin core cable includes the first conductor (12), the second conductor (22), restrictive coating (5); It is characterized in that also comprising one is positioned at central authorities and is columniform obturator (1), first isolating bar (61), second isolating bar (62); The first conductor, the second conductor, the first isolating bar, the second isolating bar are all close to obturator; The first isolating bar, the second isolating bar are kept apart the first conductor and the second conductor, and the first isolating bar, the second conductor, the second isolating bar, the first conductor are connected successively; The first isolating bar, the second isolating bar and restrictive coating are formed in one; The first isolating bar, the second isolating bar protrude to obturator direction from the inwall of restrictive coating; Restrictive coating envelopes the first conductor and the second conductor; On arbitrary cross section, the surperficial curvature that the first isolating bar, the second isolating bar, the first conductor, the second conductor are affixed with obturator appearance separately equates; It is characterized in that it comprises following steps:
Getting two metal bars forms the first conductor, the moulding of other many one metal wires synnema is formed to the step of the second conductor again as the step of the first conductor and the second conductor or by the moulding of many one metal wires synnema;
By plastic extruding machine, form the step of obturator;
Form the step of twin core cable: mould is arranged on sheath extruding machine, obturator is placed in to the filling body opening that is arranged in mould central authorities, by the first conductor, the second conductor is placed on respectively among first conductor bores and the second conductor bores of mould, the first conductor bores and the second conductor bores are all positioned at fills body opening outside, the first conductor bores and the second conductor bores are disconnected mutually, the first conductor bores, the second conductor bores does not communicate with filling body opening, forming the wall body of filling the wall body of body opening and forming the first conductor bores connects together, forming the wall body of filling the wall body of body opening and forming the second conductor bores connects together, and between the wall body of the wall body of the first conductor bores and the second conductor bores, there are two gaps, sheath is extruded while forming restrictive coating on the first conductor and the second conductor, gap has formed the first isolating bar and the second isolating bar, and two isolating bars are separated by the first conductor and the second conductor, the first isolating bar, the second isolating bar and restrictive coating are integrated.
2. the method for making twin core cable according to claim 1, the material that it is characterized in that described obturator is flame-proof polyethylene or low-smoke halogen-free polyolefin or flame-proof PVC or polypropylene or poly-low density polyethylene (LDPE) or LLDPE or medium density polyethylene or high density polyethylene (HDPE); The material of described the first isolating bar is flame-proof polyethylene or low-smoke halogen-free polyolefin or flame-proof PVC or polypropylene or poly-low density polyethylene (LDPE) or LLDPE or medium density polyethylene or high density polyethylene (HDPE); The material of described the second isolating bar is flame-proof polyethylene or low-smoke halogen-free polyolefin or flame-proof PVC or polypropylene or poly-low density polyethylene (LDPE) or LLDPE or medium density polyethylene or high density polyethylene (HDPE); The material of described restrictive coating is flame-proof polyethylene or low-smoke halogen-free polyolefin or flame-proof PVC or polypropylene or poly-low density polyethylene (LDPE) or LLDPE or medium density polyethylene or high density polyethylene (HDPE); Described the first conductor is metal bar or the complex that formed by the stranded moulding of many one metal wires; Described the second conductor is metal bar or the composite conductor that formed by the stranded moulding of many one metal wires.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210341557.2A CN102842386B (en) | 2011-08-08 | 2011-08-08 | Dual-core cable and manufacturing method thereof |
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| CN201210341557.2A CN102842386B (en) | 2011-08-08 | 2011-08-08 | Dual-core cable and manufacturing method thereof |
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| CN 201110226793 Division CN102280173B (en) | 2011-08-08 | 2011-08-08 | Two-core cable and manufacturing method thereof |
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| CN102842386B true CN102842386B (en) | 2014-10-08 |
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| CN107975639A (en) * | 2016-11-09 | 2018-05-01 | 蒋菊生 | A kind of manufacture method of the compound water supply line of electric power |
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| CN101673593A (en) * | 2009-10-10 | 2010-03-17 | 龚利芬 | Slotted core ribbon cable |
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| JPS4974475U (en) * | 1972-10-16 | 1974-06-27 | ||
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| JP3104583B2 (en) * | 1995-08-24 | 2000-10-30 | 三菱自動車工業株式会社 | Multiplex display for automobile |
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| CN101673593A (en) * | 2009-10-10 | 2010-03-17 | 龚利芬 | Slotted core ribbon cable |
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| Title |
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| JP昭和49-74475U 1974.06.27 |
| JP昭和51-52887U 1976.04.22 |
| JP特开昭49-58376A 1974.06.06 |
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