CN211699774U - Novel composite metal foil belt - Google Patents
Novel composite metal foil belt Download PDFInfo
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- CN211699774U CN211699774U CN201922263899.7U CN201922263899U CN211699774U CN 211699774 U CN211699774 U CN 211699774U CN 201922263899 U CN201922263899 U CN 201922263899U CN 211699774 U CN211699774 U CN 211699774U
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Abstract
The utility model relates to the technical field of shielding materials, in particular to a novel composite metal foil belt, which comprises a metal foil belt layer, wherein at least one side of the metal foil belt layer is provided with an elastic semi-conducting layer; elasticity semi-conducting layer makes composite metal foil area have good toughness and resilience of replying, the high frequency data cable that the winding formed can buckle wantonly and bend around, composite metal foil area tightly wraps up on the heart yearn, warp deformation and gap can not produce, owing to use elasticity semi-conducting layer, form insulating crack between the metal foil inter-band after avoiding the winding, avoid stray capacitance's production, shielding layer shielding property is even and avoid the shielding to reveal, promote the data shielding property of data line, guarantee high speed data line's transmission efficiency, and effectively prolong the life of high frequency data cable.
Description
Technical Field
The utility model belongs to the technical field of the shielding material technique and specifically relates to indicate a novel composite metal foil area.
Background
When a transmission cable is produced, in order to improve the anti-interference performance, a shielding layer is generally required to be arranged for realizing the performances of loop formation, electromagnetic shielding and the like.
The shielding layer is usually in the form of tape, weave, wrap, bellows or a combination of these forms, and the most common tape shielding layer is in the form of copper foil or aluminum foil or a composite thin tape as the shielding layer.
In the current high-frequency data lines, such as Mini SAS, SFP, USB3.1, medical devices, aviation, etc., with the acceleration of the 5G market, the demand for high-speed data transmission lines is increasing, and in order to realize high-speed data transmission, the shielding layer needs to have a good and uniform external structure and a good shielding effect.
At present, common shielding materials include metal foil materials, such as copper foil, aluminum foil, silver foil and the like, although the shielding materials have good shielding effects, the shielding materials have certain hardness, the metal ductility is unrecoverable and irreversible, and in a use occasion of movement, once a cable is bent, warped and hardened, gap electromagnetic waves leak; other high-speed data lines adopt a composite foil tape winding form: the form that foil adhered to the film twines, and such shielding layer has good ductility and deformation reversibility, because the film is insulating material, no matter is indulge the package and drags the package or around the package, all has the crack of insulating layer, on high-speed data line, can form stray capacitance, the electromagnetic wave also can be followed the insulating layer crack and revealed, energy loss, EMI is not good, and outside ripples gets into transmission channel comes, produces serious interference.
SUMMERY OF THE UTILITY MODEL
The utility model discloses lie in to the not enough that exists of present high frequency data transmission cable shielding layer, and provide a novel composite metal foil area of solving above problem.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a novel composite metal foil area, composite metal foil area includes one deck metal foil tape layer, at least one side of metal foil tape layer sets up elasticity semi-conducting layer.
Preferably, the metal foil strip layer is a copper foil strip or an aluminum foil strip.
Preferably, the copper foil strip is a pure copper foil or a copper alloy foil strip.
Preferably, the aluminum foil strip is a pure aluminum foil strip or an aluminum alloy foil strip.
Preferably, the elastic semi-conductive layer is provided with a layer of metal foil tape on both sides.
Preferably, the elastic semi-conductive layer is formed by mixing resin-based doped conductive substances, and the surface resistivity of the semi-conductive layer is 103-7Ω/cm2。
Preferably, the resin-based resin is PTFE, TPE, PE, PVC, SEBS, and silicone rubber.
Preferably, the doped conductor of the semiconducting layer is one or a mixture of more of conductive carbon black or/and conductive metal powder, graphene and carbon nanotubes.
Preferably, a conductive adhesive layer is further arranged between the metal foil tape layer and the elastic semi-conductive layer, and the resistivity of the conductive adhesive layer is 10-2-3Ω/cm2。
The utility model has the advantages that the utility model relates to a novel composite metal foil belt, which comprises a metal foil belt layer, at least one side of the metal foil belt layer is provided with an elastic semi-conducting layer; elasticity semi-conducting layer makes composite metal foil area have good toughness and resilience of replying, the high frequency data cable that the winding formed can buckle wantonly and bend around, composite metal foil area tightly wraps up on the heart yearn, warp deformation and gap can not produce, owing to use elasticity semi-conducting layer, form insulating crack between the metal foil inter-band after avoiding the winding, avoid stray capacitance's production, shielding layer shielding property is even and avoid the shielding to reveal, promote the data shielding property of data line, guarantee high speed data line's transmission efficiency, and effectively prolong the life of high frequency data cable.
Drawings
Fig. 1 is a schematic view of a cross-sectional structure of a composite metal foil strip according to an embodiment of the present invention
FIG. 2 is a schematic view of a cross-sectional structure of a composite metal foil strip according to another embodiment of the present invention
Fig. 3 is a schematic view of a cross-sectional structure of a composite metal foil strip according to another embodiment of the present invention
Detailed Description
The present invention will be further explained with reference to the accompanying drawings 1-3:
the present invention will be further explained with reference to the accompanying drawings 1-3:
a novel composite metal foil belt comprises a metal foil belt layer 1, an elastic semi-conductive layer 2 is arranged on at least one side of the metal foil belt layer 1 (figure 1 shows that an elastic semi-conductive layer 2 is arranged on one side); as a common shielding material, the metal foil tape layer 1 of the present invention preferably selects a copper foil tape or an aluminum foil tape, the copper foil tape is a pure copper foil or a copper alloy foil tape, and the aluminum foil tape is a pure aluminum foil tape or an aluminum alloy foil tape; to achieve better physical properties, a layer of metal foil tape 1 can be provided on both sides of the elastic semiconducting layer 2, as shown in figure 2. The direct bonding of the metal foil strip 1 to the elastic semiconductive layer is generally carried out by the following technical methods: and arranging a metal layer on the elastic semi-conducting layer 2 to form a metal foil belt layer 1, wherein the metal layer arranging process can be realized in the forms of electrochemical deposition, vacuum evaporation metal plating, magnetron sputtering and the like.
In a preferred embodiment, the elastic semiconductive layer 2 is made of a resin-based mixed doped conductive material, and the semiconductive layer 2 has a surface resistivity of 103-7Ω/cm2(ii) a The resin-based resin is PTFE, TPE, PE, PVC, SEBS and silicon rubber; the doped conductive substance of the semi-conductive layer 2 is one or a mixture of more of conductive carbon black or/and conductive metal powder, graphene and carbon nanotubes.
Of course, the metal foil tape layer 1 and the elastic semi-conductive layer 2 can also be formed by compounding, and the conductive adhesive layer 3 is further disposed between the metal foil tape layer 1 and the elastic semi-conductive layer 2, as shown in fig. 3, the processing technology is generally that one of the metal foil tape layer 1 and the elastic semi-conductive layer 2 is coated with semi-conductive adhesive and then compounded, and the resistivity of the conductive adhesive layer 3 is 10-2-3Ω/cm2。
The utility model discloses a composite metal foil belt, elasticity semi-conductive layer 2 makes composite metal foil belt have good toughness and reply elasticity, the high frequency data cable that the winding formed can buckle wantonly and bend around, composite metal foil belt tightly wraps up on the heart yearn, warp deformation and gap can not produce, owing to use elasticity semi-conductive layer 2, form insulating crack between metal foil belt 1 after avoiding the winding, avoid stray capacitance's production, shielding layer shielding property is even and avoid the shielding to reveal, promote the data shielding property of data line, ensure the transmission efficiency of high speed data line, and effectively prolong the life of high frequency data cable.
The above-mentioned embodiments are merely preferred examples of the present invention, not limiting the scope of the present invention, so all equivalent changes or modifications made by the structure, features and principles of the present invention should be included in the claims of the present invention.
Claims (5)
1. The novel composite metal foil tape is characterized by comprising a metal foil tape layer (1), wherein at least one side of the metal foil tape layer (1) is provided with an elastic semi-conducting layer (2); the metal foil tape layer (1) is a copper foil tape or an aluminum foil tape.
2. The novel composite metal foil strip as claimed in claim 1, wherein the copper foil strip is a pure copper foil or a copper alloy foil strip.
3. The novel composite metal foil strip as claimed in claim 1, wherein the aluminum foil strip is a pure aluminum foil strip or an aluminum alloy foil strip.
4. The novel composite metal foil tape according to claim 1, wherein the elastic semi-conductive layer (2) is provided with a layer of metal foil tape (1) on both sides.
5. The novel composite metal foil tape as claimed in claim 1, wherein a conductive adhesive layer (3) is further disposed between the metal foil tape layer (1) and the elastic semi-conductive layer (2), and the resistivity of the conductive adhesive layer (3) is 10-2-3Ω/cm2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922263899.7U CN211699774U (en) | 2019-12-17 | 2019-12-17 | Novel composite metal foil belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922263899.7U CN211699774U (en) | 2019-12-17 | 2019-12-17 | Novel composite metal foil belt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211699774U true CN211699774U (en) | 2020-10-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922263899.7U Active CN211699774U (en) | 2019-12-17 | 2019-12-17 | Novel composite metal foil belt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211699774U (en) |
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2019
- 2019-12-17 CN CN201922263899.7U patent/CN211699774U/en active Active
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