CN206584750U - A kind of electromagnetic shielding film for cable - Google Patents

Abstract

The utility model embodiment discloses a kind of electromagnetic shielding film for cable, is related to wire rod manufacture field, for prior art in the shielding processing of wire rod, low production efficiency, the problems such as production cost is high.The electromagnetic shielding film that the utility model is used for cable includes the first metal layer, conductive layer, second metal layer and insulating barrier；The first metal layer is covered in the outer upper of the conductor of cable；Conductive layer includes waiting the metallic of side's property conduction and the hybrid resin of bearing metal particle, and conductive layer is arranged on the first metal layer；Second metal layer is set on the electrically conductive, for coordinating conductive layer to be shielded；Insulating barrier is arranged in second metal layer, the outer conductor and external insulation for being caught conductive layer, the first metal layer, second metal layer respectively with cable of the conductor for coordinating cable.

Description

A kind of electromagnetic shielding film for cable

Technical field

The utility model is related to wire rod manufacture field, and in particular to a kind of electromagnetic shielding film for cable.

Background technology

In the cable production industry with signal transmission and/or power delivery, in order to reduce impedance, decay, anti-stop signal Interference and in order to prevent the loss being lost in during internal transmission, it will usually to wire rod addition electro-magnetic screen layer be electromagnetically shielded Processing.

In order to solve this problem, prior art, it is necessary to using minimum two layers or the processing of shielding material and least twice Process carries out cladding in layer, that is, completes generation conductor and covered on conductor outside surfaces outer rear, first needing cladding One layer of wheat draws aluminium foil, then the enterprising row metal braiding layer of aluminium foil is drawn in wheat, due to being woven with mesh, according to the electromagnetic shielding of cable The requirement of effect is, it is necessary to carry out the cladding braiding more than once, i.e., one layer wheat draws aluminium foil to combine one or more layers wire sheathing, To reach the coverage rate of demand.

However, by the way of this electromagnetic shielding, due to needing the cladding more than once to weave process, complex procedures, And need to consume substantial amounts of raw material, investing substantial amounts of equipment is used to weave, and causes production cost to greatly improve, and due to Wire sheathing needs the processes such as plating, and the pollution to environment is larger.

Utility model content

The utility model provides a kind of electromagnetic shielding film for cable, for solving prior art at the shielding of wire rod During reason, low production efficiency, the problems such as production cost is high.

The one side of the utility model embodiment provides a kind of electromagnetic shielding film for cable, including：

The first metal layer, conductive layer, second metal layer and insulating barrier；

The first metal layer is covered in the outer upper of the conductor of cable；

The conductive layer includes the hybrid resin of the metallic for waiting side's property conductive and the carrying metallic, described Conductive layer is arranged on the first metal layer；

The second metal layer is arranged on the conductive layer, for coordinating the conductive layer to be shielded；

The insulating barrier is arranged in the second metal layer, for coordinate the cable conductor it is outer be caught it is described The conductor and external insulation of conductive layer, the first metal layer, the second metal layer respectively with the cable.

With reference in a first aspect, in the first possible implementation of first aspect, the conductive metal of side's property such as described The ratio that particle accounts for the quality of the conductive layer is 5%-90%.

With reference to the first possible implementation of first aspect or first aspect, second in first aspect can In the implementation of energy, the thickness of the conductive layer is 5 microns to 200 microns.

With reference to second of possible reality of the first possible implementation and first aspect of first aspect, first aspect Any possible implementation in existing mode, in the third possible implementation of first aspect, side's property such as described is led The metallic of electricity include gold, silver, copper, nickel and aluminium at least one of the metallic that constitutes.

Second of possible reality of the first possible implementation, first aspect with reference to first aspect, first aspect Among the third possible implementation of existing mode and first aspect any one, in the 4th kind of possible reality of first aspect In existing mode, the thickness of the first metal layer is 5 microns to 100 microns.

Second of possible reality of the first possible implementation, first aspect with reference to first aspect, first aspect It is any among existing mode, the 4th kind of possible implementation of the third possible implementation and first aspect of first aspect One kind, in the 5th kind of possible implementation of first aspect, the thickness of the second metal layer is micro- for 0.1 micron to 10 Rice.

Second of possible reality of the first possible implementation, first aspect with reference to first aspect, first aspect Existing mode, the third possible implementation of first aspect, the 4th kind of possible implementation and first party of first aspect Any one, described in the 6th kind of possible implementation of first aspect among the 5th kind of possible implementation in face The first metal layer and the second metal layer be by gold, silver, copper, nickel and aluminium at least one of the metallic film that constitutes.

Second of possible reality of the first possible implementation, first aspect with reference to first aspect, first aspect Existing mode, the third possible implementation of first aspect, the 4th kind of possible implementation, first aspect of first aspect The 5th kind of possible implementation and first aspect the 6th kind of possible implementation among any one, in first aspect The 7th kind of possible implementation in, the insulating barrier is hybrid resin, and the thickness of the insulating barrier is 5 microns to 500 Micron.

Second of possible reality of the first possible implementation, first aspect with reference to first aspect, first aspect Existing mode, the third possible implementation of first aspect, the 4th kind of possible implementation, first aspect of first aspect The 5th kind of possible implementation, the 7th kind of the 6th kind of possible implementation and first aspect of first aspect it is possible Among implementation any one, in the 8th kind of possible implementation of first aspect, the electromagnetic shielding film also includes First diaphragm, first diaphragm is arranged at the metal level not in the one side relative with the conductive layer, and described first The thickness of diaphragm is 5 microns to 100 microns；

And/or,

The electromagnetic shielding film also include the second diaphragm, second diaphragm be arranged at the insulating barrier not with it is described In the relative one side of conductive layer, the thickness of second diaphragm is 5 microns to 100 microns.

As can be seen from the above technical solutions, the utility model embodiment has advantages below：

The utility model provides a kind of electromagnetic shielding film for cable, and electromagnetic shielding film includes the first metal layer, conduction Layer, second metal layer and insulating barrier；The first metal layer is covered in the outer upper of the conductor of cable, as first time shielding and It is used as the medium of auxiliary cable；Conductive layer include wait side's property conduction metallic and bearing metal particle hybrid resin, Conductive layer is arranged on the first metal layer, is additionally provided with second metal layer on the electrically conductive, and conductive layer is by absorbing and reflecting Mode eliminates electromagnetic interference, and can export the electric current in conductive layer rapidly, equivalent to second layer shielding；Insulating barrier is set In in second metal layer, for coordinate cable conductor it is outer be caught conductive layer, the first metal layer, second metal layer respectively with The conductor and external insulation of cable.Therefore the existing needs process that repeatedly cladding weaves is changed into only needing once to wrap by the utility model Cover screened film and can reach same or more preferable effect, greatly reduce the consumption of raw material, reduce production cost, improve production effect Rate, additionally due to without processes such as plating, reducing pollution on the environment.

Brief description of the drawings

Fig. 1 is a structural representation of the electromagnetic shielding film that the utility model is used for cable；

Fig. 2 is another structural representation for the electromagnetic shielding film that the utility model is used for cable；

Fig. 3 is the radial section schematic diagram of the wire rod produced using electromagnetic shielding film of the present utility model；

Fig. 4 is one embodiment schematic diagram of the manufacture method for the electromagnetic shielding film that the utility model is used for cable；

Fig. 5 is another embodiment schematic diagram of the manufacture method for the electromagnetic shielding film that the utility model is used for cable；

Fig. 6 is manufacture method one embodiment schematic diagram of the utility model wire rod；

Fig. 7 is another embodiment schematic diagram of the manufacture method of the utility model wire rod；

Fig. 8 is the technical process schematic diagram for manufacturing wire rod in the prior art；

Fig. 9 is the technical process schematic diagram that the utility model manufactures wire rod；

Figure 10 is the performance test figure of the HDMI wire material of the screened film using the utility model embodiment；

Figure 11 is the eye pattern of the HDMI wire material of the screened film using the utility model embodiment；

Figure 12 is the performance test figure of six class netting twines of the screened film using the utility model embodiment.

Embodiment

The utility model embodiment provides a kind of electromagnetic shielding film for cable, enables at the shielding of cable During reason, it is only necessary to once coat with regard to shielding problem can be solved, so that the waste of raw material is reduced, reduction production cost, and by It is environmentally safe in without wire sheathing, therefore without processes such as plating.

In order that those skilled in the art more fully understand the utility model scheme, it is real below in conjunction with the utility model The accompanying drawing in example is applied, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described Embodiment is only the embodiment of the utility model part, rather than whole embodiments.Based on the reality in the utility model Example is applied, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made all should When the scope for belonging to the utility model protection.

Term " first ", " second ", " the 3rd " in specification and claims of the present utility model and above-mentioned accompanying drawing, (if present)s such as " the 4 " is for distinguishing similar object, without for describing specific order or precedence.Should The data that the understanding is so used can be exchanged in the appropriate case, so that the embodiments described herein can be with except herein Order beyond diagram or the content of description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that Be to cover it is non-exclusive include, for example, containing process, method, system, product or the equipment of series of steps or unit not Be necessarily limited to those steps or the unit clearly listed, but may include not list clearly or for these processes, side The intrinsic other steps of method, product or equipment or unit.

Prior art is typically employed in wheat and draws the mode of the enterprising row metal braiding of aluminium foil to wrap up cable, forms line The electro-magnetic screen layer of cable.Due to being woven with mesh, in order to strengthen screening rate, prior art generally requires multiple braiding, reduced Production efficiency, increases production cost, adds the diameter of the cable after parcel so that the pliability of cable is very poor.

To solve the above problems, the utility model provides a kind of electromagnetic shielding film for cable, the system of electromagnetic shielding film Make method and the manufacture method of wire rod.

For ease of understanding, referring to Fig. 1, knots of the Fig. 1 for the electromagnetic shielding film for cable of the utility model embodiment Structure schematic diagram, electromagnetic shielding film 1 includes the first metal layer 11, conductive layer 12, second metal layer 14 and insulating barrier 13；

The first metal layer 11 is covered in the outer upper of the conductor of cable；

Conductive layer 12 includes waiting the metallic of side's property conduction and the hybrid resin of bearing metal particle, and conductive layer 12 sets It is placed on the first metal layer 11；

Second metal layer 14 is arranged on conductive layer 12, for coordinating conductive layer 12 to be shielded；

Insulating barrier 13 is arranged in second metal layer 14, for coordinating the outer of conductor of cable to be caught conductive layer 12, The conductor and external insulation of one metal level 11, second metal layer 14 respectively with cable.

It should be noted that, although representing the square pure with white of the first metal layer 11 and second metal layer 14 in Fig. 1 Color is filled, but this is served only for showing that the first metal layer 11 and second metal layer 14 are metal level, but the He of the first metal layer 11 Second metal layer 14 can be made up of different metals.

It should be noted that the first metal layer 11 and second metal layer 14 can as power delivery in auxiliary cable and/or The medium of signal transmission.

As can be seen that electromagnetic shielding film 1 is really formed by stacking by four-layer structure, the electromagnetic shielding film 1 eventually formed exists Seem it is still a film structure in appearance, shielded according to the banding that application demand can be cut to various different in width Film, to be adapted to the wire rod of different demands.

In actual use, the metallic in conductive layer 12 can use the conductive metallic of anisotropy, still, by In etc. the conductive metallic of side's property be comprehensive conducting, its performance is also easier adjustment, easily by increase clipped wire Quantum count improves conduction property, therefore the utility model embodiment such as includes at the conductive layer of the metallic of side's property conduction, its Capability of electromagnetic shielding and adjusting performance ability are all better than the conductive layer for the metallic for including anisotropy conduction.

In actual use, electromagnetic shielding film can not also include second metal layer 14, still, the utility model embodiment In, by increasing second metal layer 14, electromagnetic wave can be accelerated to guide speed, quickly electromagnetic wave is taken out of cable, preferably keep away Exempt from interference of the electromagnetic wave to cable.

The first metal layer 11 of electromagnetic shielding film of the present utility model can aid in cable as shielding and being used as the first time Medium, then on the first metal layer 11 cover one layer be used for shield conductive layer 12, what it is if desired for shielding is electromagnetic interference, Then the effect of the conductive layer 12 is the electromagnetic wave for producing electromagnetic interference is on the one hand anti-by being carried out on the surface of conductive layer 12 Penetrate, so as to eliminate the energy of a part of electromagnetic wave, on the other hand transmitted into the electromagnetic wave in conductive layer 12 in conductive layer 12 During can decay rapidly, i.e., the energy of electromagnetic wave is absorbed, thus absorb and reflection by way of eliminate electromagnetic interference, and And export the electric current in conductive layer 12 rapidly, equivalent to second layer shielding.It can also increase by the second metal on conductive layer 12 Layer 14, accelerates electromagnetic wave guiding speed, quickly takes electromagnetic wave out of cable, preferably avoid interference of the electromagnetic wave to cable. One layer insulating 13 is set again on second metal layer 14, the insulating barrier 14 can coordinate conductor it is outer be caught conductive layer 12, The first metal layer 11 and second metal layer 14 are insulation relative to conductor and the external world.Therefore by existing needs, repeatedly cladding is compiled The process knitted, which is changed into only needing once coating screened film, can reach same or more preferable effect.Due to substituting braiding apparatus completely, Equipment investment cost can be largely reduced, human cost is largely reduced, production efficiency is increased substantially, so as to reduce production Cost.Further, since " one arrives many " secondary weave effect can just be substituted by only needing to once coat, make the straight of the cable after parcel Footpath reduces, and improves the pliability of electric wire.Additionally due to without processes such as plating, will not be polluted to environment.

It should be noted that the hybrid resin in conductive layer 12 is to mix chummy by various kinds of resin material, the conduction On the one hand hybrid resin in layer 12 is to be used to fix metallic, is on the other hand also the carrier as metallic.Its In, the ratio that metallic accounts for the quality of conductive layer 12 is 5%-90%, and quality ratio change is embodied in two aspects, one It is according to the different and different of the metallic used.Because the density of different metal element is differed, and metallic Size be that the metallic of same volume fraction in essentially identical size, therefore conductive layer 12 accounts for the quality of conductive layer 12 Ratio is different, and the big metallic of density can take can be taken under same volume more.The second is due to electromagnetic shielding The demand of performance differ, such as require higher capability of electromagnetic shielding, then metallic accounts for the ratio of the quality of conductive layer 12 Rate will be higher, and what is reflected is exactly that the distance between metallic in conductor layer 12 becomes closer to, electric conductivity more preferably, So that electromagnetic wave attenuation is faster, and in the case where the requirement of capability of electromagnetic shielding is not very high, metallic accounts for conduction The ratio of the quality of layer 12 will be than relatively low, and the distance between metallic can be farther, and electric conductivity is relative to be weakened, and electromagnetic wave declines Deceleration is relatively slow, therefore, and the ratio of the quality for the conductive layer that the metallic in the conductive layer 12 takes can be according to demand It is adjusted, rather than in the prior art, during if desired for more preferable capability of electromagnetic shielding, it is necessary to carry out repeatedly cladding braiding, from And waste lot of materials and to due to substantial amounts of wire netting pollution on the environment problem, and due to repeatedly cladding braiding The flexibility of wire rod in itself can be caused to become excessively poor, it is many to require that the wire rod that flexibility is good and capability of electromagnetic shielding is good uses bag Covering the mode of braiding can not realize, and use the electromagnetic membrane of this programme, be also soft material in itself because thickness is very thin Material, will not be impacted to the flexibility of wire rod.

It is preferred that, the thickness of conductive layer 12 is 5 microns to 200 microns.It should be noted that the thickness of influence conductive layer 12 Mainly there are two kinds of factors, one is the diameter of the wire rod of cladding is different, thickness is differed, such as, for thinner wire rod, led The ratio that the thickness of electric layer 12 can be done is relatively thin, and for the thicker wire rod of diameter, in order to ensure the reliability of wire rod, it is necessary to thicker Need the comparison done thick to conductive layer 12, the second is can according to the electric conductivity of demand difference and thickness is different, need The strong wire rod of derivation electrical property can have bigger cross-sectional area using the larger conductive layer 12 of thickness, thick conductive layer 12, from Relative and electric conductivity is also stronger, smaller and higher to the wire rod softness requirements wire rod of electric conductivity demand then can select The less conductive layer 12 of thickness ratio, adjusts with specific reference to actual conditions, does not limit.

Optionally, the conductive metallic of the side's of grade property include gold, silver, copper, nickel and aluminium at least one of the metal that constitutes Particle.The selection of metallic, can choose the stronger metallic of conductive capability, can accomplish the ratio in metallic quality Identical electric conductivity is reached in the case of relatively small；Such as choose one among the stronger gold, silver of conductive capability, copper, nickel and aluminium Kind, also can be that outer layer is the strong coat of metal of conductive capability using another mode, i.e. metallic, internal layer is selected certainly The electric conductivity metal weak compared with the coat of metal, needing to change metal and the strong metal of conductive capability certainly has good associativity, The metallic that is made of metal for being better than and being selected completely using internal layer can be reached, specific choose can be according to the limitation of production cost And depending on the requirement of the wire rod of production.

Optionally, the thickness of the first metal layer 11 is 5 microns to 100 microns, it is to be understood that the first metal layer 11 Depending on thickness is the wire rod according to different-diameter, gauge or diameter of wire is bigger, can choose the larger the first metal layer 11 of thickness, wire rod Diameter is smaller, can choose the smaller the first metal layer 11 of thickness, according to the different and different of actual wire rod, not limit specifically.

As optional, the thickness of second metal layer 14 is 0.1 micron to 10 microns.It is understood that the second metal Depending on the thickness of layer 14 is the thickness according to conductive layer 12, the thickness of second metal layer 14 is set with the thickness of conductive layer 12 can Think linear relationship, the i.e. thickness of second metal layer 14 as the thickness of conductive layer 12 increases and increases.

The first metal layer 11 and second metal layer 14 be by gold, silver, copper, nickel and aluminium at least one of the metal that constitutes Film.It is understood that due to needing as screen layer and as medium, therefore the first metal layer 11 and second metal layer 14 electric conductivity be also it is critically important, therefore the first metal layer 11 and second metal layer 14 material need from electric conductivity compared with Choose, one kind among such as selection gold, silver, copper, nickel and aluminium, can be also used certainly among this several metal extremely in strong metal Few two kinds alloy.

As optional, insulating barrier 13 is hybrid resin, and the thickness of insulating barrier 13 is 5 microns to 500 microns.The insulation 13 one side of layer are used as insulating materials so that the first metal layer 11, second metal layer 14 and conductive layer 12 and external insulation, separately On the one hand when such as wire rod requirement is harder, then the thickness of the insulating barrier 13 can be done as the means for adjusting wire rod flexibility Ratio it is larger so that the hardness of wire rod is higher, when such as wire rod requirement is more soft, as long as ensureing the situation of insulation effect Under, the as far as possible thin pliability so as to minimum degree influence wire rod that insulating barrier 13 can be done.

According to the thickness range of above layers, it may be determined that the thickness of the preferred electromagnetic shielding film of the utility model embodiment Scope is 15.1 microns to 810 microns.

It is not to use immediately, it is therefore desirable to which it is protected because screened film 1 is after the completion of production, it is a kind of feasible Method be the superiors of screened film 1 or orlop addition layer protecting film, then in wraparound shield film 1, will have The side of diaphragm is wound on outside, so as to carry out enough protections to it before using screened film 1, naturally it is also possible to same When be respectively provided with diaphragm in the superiors of screened film and orlop, the progress hence for screened film 1 is more comprehensively protected.

Referring to Fig. 2, another structural representations of the Fig. 2 for the electromagnetic shielding film for cable of the utility model embodiment Figure, electromagnetic shielding film 2 include the first metal layer 21, conductive layer 22, insulating barrier 23, second metal layer 26, the first diaphragm 24 with And second diaphragm 25；

The first metal layer 21 is covered in the outer upper of the conductor of cable；

Conductive layer 22 includes waiting the metallic of side's property conduction and the hybrid resin of bearing metal particle, and conductive layer 22 sets It is placed on the first metal layer 21；

Second metal layer 26 is arranged on conductive layer 22, for coordinating conductive layer 22 to be shielded；

Insulating barrier 23 is arranged in second metal layer 26, for coordinating the outer of conductor of cable to be caught conductive layer 22, The conductor and external insulation of one metal level 21, second metal layer 26 respectively with cable；

The first metal layer 21 not provided with first that thickness is 5 microns to 100 microns protect by the one side relative with conductive layer 22 Cuticula 24, the one side relative with conductive layer 22 is not provided with the second diaphragm that thickness is 5 microns to 100 microns to insulating barrier 23 25。

It should be noted that, although representing the square pure with white of the first metal layer 21 and second metal layer 26 in Fig. 2 Color is filled, but this is served only for showing that the first metal layer 21 and second metal layer 26 are metal level, but the He of the first metal layer 21 Second metal layer 26 can be made up of different metals.

It should be noted that the first metal layer 21 and second metal layer 26 can as power delivery in auxiliary cable and/or The medium of signal transmission.

As can be seen that electromagnetic shielding film 2 is really formed by stacking by six layer structure, the electromagnetic shielding film 1 eventually formed exists Seem it is still a film structure in appearance, shielded according to the banding that application demand can be cut to various different in width Film, to be adapted to the wire rod of different demands.

In actual use, the metallic in conductive layer 22 can use the conductive metallic of anisotropy, still, by In etc. the conductive metallic of side's property be comprehensive conducting, its performance is also easier adjustment, easily by increase clipped wire Quantum count improves conduction property, therefore the utility model embodiment such as includes at the conductive layer of the metallic of side's property conduction, its Capability of electromagnetic shielding and adjusting performance ability are all better than the conductive layer for the metallic for including anisotropy conduction.

In actual use, electromagnetic shielding film can not also include second metal layer 26, still, the utility model embodiment In, by increasing second metal layer 26, electromagnetic wave can be accelerated to guide speed, quickly electromagnetic wave is taken out of cable, preferably keep away Exempt from interference of the electromagnetic wave to cable.

First diaphragm 24 and the second diaphragm 25 are used to protecting electromagnetic shielding film 1, thus typically from wear-resisting, waterproof, Engineering films with certain electrical insulation properties, such as polyethylene terephtalate film, or polyimides PI Film, either polyvinylchloride film or polypropylene PP film, either polyethylene PE film or ethene-vinyl acetate Copolymer eva film, either polycarbonate film or methyl methacrylate MMA films, or cast polypropylene film CPP films, either acrylonitrile-butadiene-styrene copolymer ABS films or polyamide PA films etc..It is preferred that, second Diaphragm 25 can select PET film, and PET material has advantages below：1. heat distortion temperature and long-term use temperature are thermoplastics Highest in property general engineering plastic；2. because heat-resisting height, REINFORCED PET impregnates 10S in 250 DEG C of solder bath, almost unchanged Shape also nondiscolouring, is particularly suitable for preparing electronics, the electric parts of soldering；3. bending strength is high, modulus of elasticity is high, creep resistance and tired Labor is also fine, and case hardness is high, and mechanical performance is close with thermosetting plastics；4. by production PET institute's spent glycols are than production The price of butanediol used in PBT almost cheap half, so PET resin and REINFORCED PET are cheapest, tools in engineering plastics There is very high cost performance.

In actual use, electromagnetic shielding film 2 can also include the first metal layer 21, conductive layer 22, insulating barrier 23, second The diaphragm 24 of metal level 26 and first, without including the second diaphragm 25.Now, can be by first when winding electromagnetic shielding film The side of diaphragm 24 is wound on outside, so as to carry out enough protections to it before using electromagnetic shielding film 2.

Or, in actual use, electromagnetic shielding film 2 can also include the first metal layer 21, conductive layer 22, insulating barrier 23rd, the diaphragm 25 of second metal layer 26 and second, without including the first diaphragm 24.Now, can be with when winding electromagnetic shielding film By the side of the second diaphragm 25 wound on outside, so as to which enough protections are carried out to it before using electromagnetic shielding film 2.

First diaphragm 24 and the second diaphragm 25 are referred to as diaphragm, the thickness of diaphragm can be according to electromagnetic shielding film 2 itself thickness and it is different, such as when electromagnetic shielding film 2 is thicker, the thickness of diaphragm can be relatively larger, electromagnetic screen Cover film 2 it is relatively thin when, the ratio that diaphragm can be done is relatively thin.

The first metal layer, second metal layer, the thickness of conductive layer and insulating layer may be referred to the corresponding embodiments of Fig. 1, because The thickness range of the preferred electromagnetic shielding film 2 of this utility model embodiment is 25.1 microns to 1010 microns.

The electromagnetic shielding film 1 and electromagnetic shielding film 2 of the utility model embodiment can be widely applied for electric power, communication and believe The electric wire that is shielded of all kinds of needs in terms of number transmission.

As shown in figure 3, be the longitudinal section view of the wire rod produced using the electromagnetic shielding film 1 of the utility model embodiment, It is followed successively by conductor 31 from inside to outside, outer by 321, the first metal layer 11, conductive layer 12, second metal layer 14, the and of insulating barrier 13 It is outer by 322, wherein the first metal layer 11, conductive layer 12, second metal layer 14 and insulating barrier 13 are the composition portion of electromagnetic shielding film 1 Point.As can be seen that covering wheat repeatedly relative to prior art draws aluminium foil and wire sheathing, the production of wire rod can be greatly reduced Cost and equipment investment, and wire production is substantially reduced due to plating pollution on the environment.It is real using the utility model Each layer is in the distribution situation of radial direction in the wire rod for the production of electromagnetic shielding film 2 for applying example, and those skilled in the art are easily according to Fig. 3 institutes Show that embodiment is drawn, here is omitted.

It should be noted that, although representing the square pure with white of the first metal layer 11 and second metal layer 14 in Fig. 3 Color is filled, but this is served only for showing that the first metal layer 11 and second metal layer 14 are metal level, but the He of the first metal layer 11 Second metal layer 14 can be made up of different metals.

The electromagnetic shielding film of the utility model embodiment is described above, below to the utility model embodiment The manufacture method of electromagnetic shielding film is introduced, referring to Fig. 4, Fig. 4 is the electromagnetism for cable of the utility model embodiment One embodiment figure of the manufacture method of screened film, the manufacture method may include：

401st, the outer by upper the first metal layer of conductor for being covered in cable is generated；

Wherein, the demand of the wire rod that can be applied according to specific needs first generates the first metal layer of demand thickness, and this One metal level can be used as shielding for the first time.

It should be noted that when generating the first metal layer, also can first set one layer of base under the first metal layer in advance Plate, makes the first metal layer generate on the substrate, so that the higher the first metal layer of quality is obtained, while the substrate and the first gold medal It is easy to depart between category layer.

402nd, it is deposited or is coated with the first metal layer the conductive layer comprising metallic and hybrid resin；

Wherein, after the first metal layer completes, comprising metallic and it will can be mixed by way of being deposited or being coated with The conductive layer of mould assembly resin, conductive layer includes the hybrid resin for the metallic and bearing metal particle for waiting side's property conductive, this The thickness of conductive layer depending on the demand of wire rod, wherein, hybrid resin is mixed by a variety of different resin materials.

It should be noted that by the way of evaporation or coating, enabling to be formed containing metallic and hybrid resin Conductive layer be evenly distributed on the first metal layer so that can be adjusted by the condition to evaporation can for which The conductive layer of acquisition demand thickness so that the quality of the conductive layer not only formed is higher, and formed the efficiency of conductive layer also compared with It is high.

403rd, second metal layer is generated on the electrically conductive；

Wherein, in order to complete second layer screen layer, it is necessary on the electrically conductive generation with conductive layer coordinate second metal layer.

404th, insulating barrier is sprayed or pressed in second metal layer.

After the making of second metal layer is completed, so that it may by way of spraying on second metal layer, according to tool Body needs the demand for the wire rod applied to generate the insulating barrier of demand thickness, or pre-generatmg can also be pressed in second metal layer Insulating barrier.The thickness of the insulating barrier is on the one hand depending on insulating properties, and another aspect is also depending on the softness of wire rod.

It should be noted that insulating barrier is by the way of spraying, because spraying is a kind of being formed uniformly for large area The mode of Rotating fields, ensure that the insulating barrier to be formed is not only uniform on thickness, and the quality of insulating barrier is also higher.

It should be noted that the generation of the first metal layer and second metal layer can use various ways, for example with use Founding, is then molded into the mode of demand thickness.

As can be seen here, using the manufacture method of the utility model embodiment, the wire rod that can be applied according to specific needs first Demand generate demand thickness the first metal layer, the first metal layer can be used as the first time shield, can pass through evaporation or be coated with Mode will include the conductive layer of metallic and hybrid resin, after the making of conductive layer is completed, give birth on the electrically conductive Into second metal layer, then can by way of spraying on second metal layer spray applied insulation, so as to produce thickness Precisely, the uniform high-quality screened film in surface.

It should be noted that in actual production process, can also be generated in the opposite mode of embodiment corresponding with Fig. 4 Electromagnetic shielding film, i.e., first generate insulating barrier, generates second metal layer on the insulating layer afterwards, and conductive layer is deposited or is coated with afterwards On second metal layer, the first metal layer is finally generated on the electrically conductive.

In actual use, the metallic in conductive layer can use the conductive metallic of anisotropy, still, due to It is comprehensive conducting Deng the conductive metallic of side's property, its performance is also easier adjustment, easily by increase metallic Quantity improves conduction property, therefore the utility model embodiment includes waiting the conductive layer of the metallic of side's property conduction, and it is electric Magnetic shield performance and adjusting performance ability are all better than the conductive layer for the metallic for including anisotropy conduction.

In actual use, electromagnetic shielding film can not also include second metal layer, still, the utility model embodiment In, by increasing second metal layer, electromagnetic wave can be accelerated to guide speed, quickly electromagnetic wave is taken out of cable, preferably avoid Interference of the electromagnetic wave to cable.

It should be noted that the hybrid resin in conductive layer is to mix chummy by various kinds of resin material, the conductive layer In hybrid resin on the one hand be used for fix metallic, be on the other hand also the carrier as metallic.Wherein, it is golden The ratio that category particle accounts for the quality of conductive layer is 5% to 90%, and quality ratio change is embodied in two aspects, one is according to The metallic used it is different and different.Because the density of different metal element is differed, and the size of metallic It is essentially identical size, therefore the quality ratio that the metallic of same volume fraction accounts for conductive layer in conductive layer is different , the big metallic of density can take can be taken under same volume more.The second is the need of the performance due to electromagnetic shielding Ask and differ, such as require higher capability of electromagnetic shielding, then metallic account for the ratio of the quality of conductive layer will be higher, What is reflected is exactly that the distance between metallic in conductor layer becomes closer to electric conductivity is more preferably so that electromagnetic wave attenuation Faster, and in the case where the requirement of capability of electromagnetic shielding is not very high, metallic accounts for the ratio of the quality of conductive layer Will be than relatively low, the distance between metallic can be farther, and electric conductivity is relative to be weakened, and electromagnetic wave attenuation speed is relatively slow, Therefore, the ratio of the quality for the conductive layer that the metallic in the conductive layer takes can be adjusted according to demand, and non-existing In technology, during if desired for more preferable capability of electromagnetic shielding, it is necessary to carry out repeatedly cladding braiding so that waste lot of materials and To due to substantial amounts of wire netting pollution on the environment problem, and because multiple cladding braiding can cause wire rod soft in itself It is soft to become excessively poor, it is many require that flexibility is good and capability of electromagnetic shielding is good wire rod is by the way of cladding braiding can not Realize, and use the electromagnetic membrane of this programme, be also flexible material in itself because thickness is very thin, will not be to the softness of wire rod Property is impacted.

It is to be appreciated that, it is not to use immediately, it is therefore desirable to which it is protected because screened film is after the completion of production A kind of shield, feasible method is in the superiors of electromagnetic shielding film or orlop addition layer protecting film, then in winding electricity It is enough so as to be carried out before using screened film to it by the side with diaphragm wound on outside during magnetic shield film Protection, naturally it is also possible to while diaphragm is respectively provided with the superiors of screened film and orlop, hence for the progress of screened film More comprehensively protection, diaphragm can be different according to the thickness of screened film in itself, and when such as screened film is thicker, diaphragm can be with Relative thick some, when screened film is relatively thin, the ratio that diaphragm can be done is relatively thin.Fig. 5 is the utility model embodiment for cable Another of manufacture method of electromagnetic shielding film implement illustration, the manufacture method may include：

501st, the first metal layer is generated on the first diaphragm；

Wherein, the demand for the wire rod that can be applied according to specific needs first generates the of demand thickness on the first diaphragm One metal level, the first metal layer can be used as shielding for the first time.

502nd, it is deposited or is coated with the first metal layer the conductive layer comprising metallic and hybrid resin；

Wherein, after the first metal layer completes, can be deposited or be coated with the first metal layer comprising metallic and The conductive layer of hybrid resin, conductive layer include wait side's property conduction metallic and bearing metal particle hybrid resin, The thickness of the conductive layer depending on the demand of wire rod, wherein, hybrid resin is mixed by a variety of different resin materials.

It should be noted that by the way of evaporation or coating, enabling to be formed containing metallic and hybrid resin Conductive layer be evenly distributed on the first metal layer so that can be adjusted by the condition to evaporation can for which The conductive layer of acquisition demand thickness so that the quality of the conductive layer not only formed is higher, and formed the efficiency of conductive layer also compared with It is high.

503rd, second metal layer is generated on the electrically conductive；

Wherein, in order to complete second layer screen layer, it is necessary on the electrically conductive generation with conductive layer coordinate second metal layer.

504th, the spray applied insulation in second metal layer；

Complete second metal layer making after, so that it may by way of spraying on second metal layer spray insulation Layer, the thickness of the insulating barrier is on the one hand depending on insulating properties, and another aspect is also depending on the softness of wire rod.

505th, spray or press on the insulating layer the second diaphragm.

After spray applied insulation, so that it may by way of spraying on insulating barrier, the line applied according to specific needs The demand of material generates the second diaphragm of demand thickness, or can also press the second diaphragm of pre-generatmg on the insulating layer.

It should be noted that in actual production process, can also be generated in the opposite mode of embodiment corresponding with Fig. 5 Electromagnetic shielding film, that is, firstly generate the second diaphragm, afterwards using the second diaphragm as carrier, and insulation is generated on the second diaphragm Layer, generates second metal layer, conductive layer is then generated in second metal layer, is given birth on the electrically conductive afterwards on the insulating layer afterwards Into the first metal layer, the first diaphragm is finally coated with or pressed on the first metal layer.

First diaphragm and the second diaphragm can use engineering films, such as polyethylene terephtalate is thin Film, either polyimides PI films or polyvinylchloride film, either polypropylene PP film or polyethylene PE film, Either ethylene-vinyl acetate copolymer eva film or polycarbonate film, or methyl methacrylate MMA films, Either cast polypropylene film CPP films or acrylonitrile-butadiene-styrene copolymer ABS films, or polyamide PA Film etc..

The manufacture method to the electromagnetic shielding film for cable of the utility model embodiment is described above, below Manufacture method to the wire rod of the utility model embodiment is introduced.

Referring to Fig. 6, Fig. 6 is one embodiment schematic diagram of the manufacture method of the wire rod of the utility model embodiment, this The manufacture method for the wire rod that utility model embodiment is provided may include：

601st, the conductor for power delivery and/or signal transmission is generated；

Wherein, when making cable, the conductor for power delivery and/or signal transmission is firstly generated.

It should be noted that the conductor can be for the conductor of power delivery or for leading that signal is transmitted Body or the conductor for being used for power delivery and signal transmission simultaneously.

602nd, the outer quilt for insulating and protecting is covered on the outer surface of conductor；

After the conductor that completes, it can be covered on the outer surface of conductor for quilt outside the conductor that insulate and protect.

603rd, in the outer by the upper electromagnetic shielding film for winding or coating banding of conductor；

After covering the outer quilt for insulating and protecting on the outer surface of conductor, can conductor it is outer by upper winding or The electromagnetic shielding film of banding is coated, the electromagnetic shielding film is Fig. 1 or the electromagnetic shielding film of embodiment illustrated in fig. 2.The quilt outside conductor After completing, as shown in fig. 7, the outer by 321 of conductor 31 electromagnetic shielding film 1 of banding can be wound or is coated on.

It is preferred that, can be in the outer by upper use wheat drawing aluminium of conductor in order to utilize existing production equipment in the prior art Paper tinsel wrapping machine winds or coats electromagnetic shielding film using coating machine.Because the screened film in the utility model embodiment is banding Structure, and wheat is drawn in the structure that aluminium foil is also banding in itself, therefore the manufacture method of the wire rod of the utility model implementation, can use Wheat in the manufacture method of the wire rod of prior art draws the equipment of aluminium foil wrapping machine or coating machine as winding or coating screened film, So as in the case where reducing the production equipment of prior art, produce identical or even more excellent quality product, and by Need to use special equipment in wire sheathing production, and the equipment to add cost higher, thus, the utility model is real The manufacture method of wire rod of example is applied when mass producing wire rod, the production cost of wire rod can be substantially reduced, simultaneously because need not Wire sheathing, so that the metal material of braiding is produced without progress, so that while largely saving raw material, additionally it is possible to disappear Except the pollution to environment.

604th, cover on an electro-magnetic shielding film for quilt outside the wire rod that insulate and protect.

After electromagnetic shielding film winds or is covered to complete, the wire rod for insulating and protecting can be covered on an electro-magnetic shielding film Outer quilt, the outer wire rod is present as the outermost protective layer of wire rod.

It should be noted that in actual applications, this step can not also be performed, i.e., it can not also be covered on the electromagnetic shielding film The outer quilt of lid wire rod, whether wire rod is outer is needed covering depending on the protection demand of cable, and such as part electric wire does not have too with cable When crossing harsh protection demand, the outer quilt of wire rod can not be covered and the insulating barrier in electromagnetic shielding film is directly used as wire rod Protective layer, for example for inside equipment have equipment shell protect wire rod, then such as some cables or electric wire be used for family Outer or relatively more severe situation, now needs the outer quilt of covering wire rod, on the one hand as protective layer, another aspect reinforced insulation Energy.

Referring to Fig. 8, the specific embodiment to manufacture wire rod in the prior art, Fig. 9 is that the utility model manufactures wire rod Specific embodiment, the processing procedure of frame overstriking is electromagnetic shielding processing procedure.As can be seen that the wire rod of the utility model embodiment Difference of the manufacture method relative to the preparation method of existing wire rod is that the winding wheat of prior art is wrapped after drawing aluminium foil and winding Cover wire sheathing, and may carry out repeatedly cladding braiding step, and the utility model embodiment scheme is only with step 603, By upper winding or the screened film of cladding banding i.e. outside conductor, you can complete corresponding numerous and diverse step in the prior art, greatly carry The production efficiency of high wire rod, and due to having lacked wire sheathing, without complicated braiding process, and without plating, to ring Border is pollution-free.Tai Maila aluminium foils winding in the prior art or coating machine need to be equipped with tens to hundreds of braided metals volumes The braider of tissue layer, equipment cost is high, and the too many space-consuming of equipment is too big, and uses the utility model embodiment scheme, Due to that need not weave process, therefore the expenditure of equipment cost greatly reduces, and the space-consuming of equipment is also greatly reduced.

Here is the property for the wire rod produced using the screened film of the utility model embodiment and the manufacture method of wire rod Can test case.

For example, the test of the HDMI wire material for the screened film using the utility model embodiment, refers to Figure 10 and figure 11, Figure 10 be using the utility model embodiment screened film HDMI wire material performance test figure, wherein, CLK, D0, D1 and D2 is by test, and Figure 11 is the eye pattern of the HDMI wire material of the screened film using the utility model embodiment, and the HDMI wire material is Made using HDMI1.4 standard, but the screened film using the utility model embodiment is can be seen that from the eye pattern The wire rods of the standards of HDMI 1.4 can easily pass through the test of HDMI2.0 standards.

In another example, for the test of six class netting twines of the screened film using the utility model embodiment, Figure 12 is referred to, is schemed 12 be the performance test figure of six class netting twines of the screened film using the utility model embodiment, it can be seen that using from the Figure 12 Six class netting twines of the screened film of the utility model embodiment can easily pass through corresponding test.

In addition to the test of above-mentioned classification, all kinds of wire rods using the shielding film production of the utility model embodiment also have very It is many, and the test of the standard of corresponding wire rod can be easily passed through, as space is limited, it will not enumerate.From above-mentioned test number According to can be seen that the screened film of the utility model embodiment because its is high-quality and inexpensive characteristic, with wide market Prospect.

More than, above example is only to illustrate the technical solution of the utility model, rather than its limitations；Although with reference to before Embodiment is stated the utility model is described in detail, it will be understood by those within the art that：It still can be with Technical scheme described in foregoing embodiments is modified, or equivalent substitution is carried out to which part technical characteristic；And These modifications are replaced, and the essence of appropriate technical solution is departed from the spirit of each embodiment technical scheme of the utility model And scope.

Claims (8)

1. a kind of electromagnetic shielding film for cable, it is characterised in that the electromagnetic shielding film includes the first metal layer, conduction Layer, second metal layer and insulating barrier；

The first metal layer is covered in the outer upper of the conductor of cable；

The conductive layer includes the hybrid resin of the metallic for waiting side's property conductive and the carrying metallic, the conduction Layer is arranged on the first metal layer；

The second metal layer is arranged on the conductive layer, for coordinating the conductive layer to be shielded；

The insulating barrier is arranged in the second metal layer, for coordinating the outer of conductor of the cable to be caught the conduction Layer, the conductor and external insulation of the first metal layer, the second metal layer respectively with the cable.

2. the electromagnetic shielding film according to claim 1 for cable, it is characterised in that the thickness of the conductive layer is 5 Micron is to 200 microns.

3. the electromagnetic shielding film according to claim 1 for cable, it is characterised in that the conductive metal of side's property such as described Particle include gold, silver, copper, nickel and aluminium at least one of the metallic that constitutes.

4. the electromagnetic shielding film according to any one of claim 1 to 3 for cable, it is characterised in that described first The thickness of metal level is 5 microns to 100 microns.

5. the electromagnetic shielding film according to claim 4 for cable, it is characterised in that the thickness of the second metal layer For 0.1 micron to 10 microns.

6. the electromagnetic shielding film according to claim 4 for cable, it is characterised in that the first metal layer and described Second metal layer be by gold, silver, copper, nickel and aluminium at least one of the metallic film that constitutes.

7. the electromagnetic shielding film according to any one of claim 1 to 3 for cable, it is characterised in that the insulation Layer is hybrid resin, and the thickness of the insulating barrier is 5 microns to 500 microns.

8. the electromagnetic shielding film according to claim 6 for cable, it is characterised in that the electromagnetic shielding film also includes First diaphragm, first diaphragm is arranged at the metal level not in the one side relative with the conductive layer, and described first The thickness of diaphragm is 5 microns to 100 microns；

And/or,

The electromagnetic shielding film also include the second diaphragm, second diaphragm be arranged at the insulating barrier not with the conduction In the relative one side of layer, the thickness of second diaphragm is 5 microns to 100 microns.