CN111029016A - Communication shielded cable with wrapped shielding film and production process thereof - Google Patents
Communication shielded cable with wrapped shielding film and production process thereof Download PDFInfo
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- CN111029016A CN111029016A CN201911416586.9A CN201911416586A CN111029016A CN 111029016 A CN111029016 A CN 111029016A CN 201911416586 A CN201911416586 A CN 201911416586A CN 111029016 A CN111029016 A CN 111029016A
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- shielding film
- sleeve
- film
- shielding
- core wire
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/2806—Protection against damage caused by corrosion
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- Manufacturing & Machinery (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a communication shielded cable with a wrapped shielding film, which comprises a PTFE core wire, wherein a plurality of guide cores are arranged in the PTFE core wire, a shielding film sleeve is arranged on the periphery of the PTFE core wire, the shielding film sleeve is axially paved with circumferential wrapping materials, the shielding film sleeve is provided with an axial overlapping part, a protective sleeve body is arranged on the periphery of the shielding film sleeve, a forming film belt of the shielding film sleeve is a shielding film belt formed by hot-pressing a copper foil and a PI film in a composite mode, and the PI film is bonded with the PTFE core wire. Also provides a production process of the communication shielded cable. The shielding film sleeve is used for replacing a tin-impregnated copper metal braided sleeve, so that the cost of the cable is greatly reduced. The shielding film sleeve formed by axially laying and axially wrapping is adopted, so that continuous longitudinal wrapping production of the shielding cable is facilitated, and the production process cost is greatly reduced. Possess the protective layer design, can increase the firm stability of shielding film cover, possess corrosion-resistant isolation demand simultaneously, prolonged communication shielded cable's life.
Description
Technical Field
The invention relates to a communication shielded cable with a wrapped shielding film and a production process thereof, belonging to the technical field of shielded cables.
Background
The advent of 5G networks has had a significant impact on critical components, particularly connectors and cables used in wireless and wired infrastructures. Recently, the united states and the united kingdom have announced an acceleration in 5G network development, which has injected energy into the entire network industry. Today, western economies are trying to compete with the 5G technology that was intensively introduced in china.
However, achieving this leap on a large scale will depend on the adoption of new cable technology. Worldwide, copper-based mobile backhaul architectures are being upgraded to packet transmission over fiber architectures. Optical cables can transmit higher bandwidths and are therefore indispensable configurations for the processing speed of future 5G network products. Small base stations, new equipment and products, etc. that match 5G networks must be able to handle higher speeds and densities while reducing delays, consuming less energy, generating less heat, etc. Among them, the shielding performance of the cable is very strict.
Traditionally, communication shielded cable adopts PTFE heart yearn and PVC protective sheath, has designed the metal braid cover between PTFE heart yearn and PVC protective sheath, and the metal braid cover adopts the tin copper that soaks to handle, and this shielded cable's cost is higher, and shielding nature is relatively poor, and the diameter is also great, is unfavorable for cable laying.
Disclosure of Invention
The invention aims to solve the defects of the prior art, and provides a communication shielding cable with a wrapped shielding film and a production process thereof aiming at the problems of high production cost and poor shielding property of the traditional shielding cable.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the communication shielding cable with the wrapped shielding film comprises a PTFE core wire with a plurality of guide cores inside, wherein the periphery of the PTFE core wire is provided with a shielding film sleeve which is paved axially and wrapped circumferentially, the shielding film sleeve is provided with an axial overlapping part,
the periphery of the shielding film sleeve is provided with a protective sleeve body, the forming film belt of the shielding film sleeve is a shielding film belt formed by hot pressing of a copper foil and a PI film, and the PI film is bonded with the PTFE core wire.
Preferably, the copper foil is bonded to the PI die within the axial overlap.
Preferably, an adhesive layer is arranged on the PI film.
Preferably, the outer circumference of the shielding film sleeve is coated with a protective layer.
Preferably, the protective layer is an acrylic protective agent.
Preferably, the thickness of the copper foil is 7-20 μm, and the thickness of the PI film is 8-25 μm.
The invention also provides a production process of the communication shielded cable, which comprises the following steps:
s1, selecting the material to be,
selecting a PTFE core wire finished product wire, and selecting a molding film belt material roll according to the peripheral size of the PTFE core wire;
s2 wrapping the shielding film sleeve,
paying off a PTFE core wire through wire feeding equipment, peripherally wrapping the free end of a forming film tape coil at the free end of the PTFE core wire, winding a PI film surface on the PTFE core wire in the wrapping process, and overlapping a PI film on a copper foil in an axial overlapping part;
s3, solidifying the sintering furnace,
sintering and solidifying the wire wrapped with the shielding film sleeve by a sintering furnace, wherein the temperature in the sintering furnace is 220 +/-50 ℃;
s4 coating a protective layer on the surface of the substrate,
coating an acrylic acid protective agent on the sintered and solidified wire rod, carrying out hot baking solidification,
s5, the sheath body is protected,
and the protective sleeve body is wrapped and formed through protective sleeve wrapping equipment.
The invention has the following beneficial effects:
1. the shielding effect is showing, satisfies 5G communication shielded cable's demand, replaces the wicking copper metal braided sleeve through the shielding film cover, has greatly reduced the cable cost.
2. The shielding film sleeve formed by axially laying and axially wrapping is adopted, so that continuous longitudinal wrapping production of the shielding cable is facilitated, and the production process cost is greatly reduced.
3. Possess the protective layer design, can increase the firm stability of shielding film cover, possess corrosion-resistant isolation demand simultaneously, prolonged communication shielded cable's life.
Drawings
Fig. 1 is a schematic structural view of a communication shielded cable with a wrapping shielding film according to the present invention.
Fig. 2 is a schematic cross-sectional view of a communication shielded cable having a wrapping shielding film according to the present invention.
FIG. 3 is a schematic view of the layered structure of the formed film strip of the present invention.
Detailed Description
The invention provides a communication shielding cable with a wrapping shielding film and a production process thereof. The technical solution of the present invention is described in detail below with reference to the accompanying drawings so that it can be more easily understood and appreciated.
Possess the communication shielded cable of parcel barrier film, as shown in fig. 1 to fig. 3, including inside PTFE heart yearn 2 that possesses a plurality of core 1 of leading, the periphery of PTFE heart yearn 2 is equipped with the axial and lays the barrier film cover 3 of circumference parcel, and barrier film cover 3 possesses axial overlap portion 4.
The periphery of the shielding film sleeve 3 is provided with a protective sleeve body 5, the protective sleeve body 5 can be a PVC protective sleeve, a forming film belt 6 of the shielding film sleeve 3 is a shielding film belt formed by hot-pressing and compounding a copper foil 61 and a PI film 62, and the PI film 62 is bonded with the PTFE core wire 2.
Specifically, the shielding film belt 6 is adopted to replace a traditional tin-impregnated copper metal braided sleeve, so that the cost of a shielding layer is effectively reduced, the diameter of the communication cable is controlled, the shielding effect is excellent, the shielding film belt 6 is wrapped in an axial extending manner, the wrapping and processing are convenient, and the production process cost is reduced.
The PI film is adopted as the copper foil base band, so that the flexibility and the strength of the composite shielding film band can be increased, the copper foil 61 is not easy to damage, and the stable quality of the communication cable is ensured. It should be noted that, an auxiliary adhesive is provided between the copper foil and the PI film during the hot-pressing composite molding, which belongs to the prior art and is not described herein again.
In one embodiment, the copper foil 61 is bonded to the PI die 62 within the axial overlap 4. The PI film 62 is provided with an adhesive layer 7.
Specifically, the PI film 62 is provided with the adhesive layer 7, which facilitates adhesion when being laminated with the PTFE core wire 2 and the copper foil 61 when wrapping the outer periphery, and is convenient and reliable.
In a specific embodiment, the outer circumference of the shielding film sleeve 3 is coated with a protective layer 8. The protective layer 8 is an acrylic acid protective agent.
This acrylic acid protective agent can increase the supplementary reinforcement effect after 3 shaping of shielding film cover on the one hand, and on the other hand can protect shielding film cover 3, plays corrosion-resistant and seals the effect that separates the air, prevents that invasion such as outside moisture from producing the damage to shielding film cover 3 behind PVC protective sheath 5 and the inner core production clearance, has prolonged communication shielded cable's life.
In one embodiment, the copper foil has a thickness of 7 to 20 μm and the PI film has a thickness of 8 to 25 μm. The shielding film sleeve formed by the molding film strip 6 in the size range meets the shielding requirement of the 5G communication shielding cable.
The production process of the communication shielded cable of the invention is explained as follows, comprising the following steps:
s1, selecting a material, selecting a finished PTFE core wire product line, and selecting a molding film tape roll according to the peripheral dimension of the PTFE core wire.
In general, it is sufficient that the dimension of the axially overlapping portion 4 is larger than the 1/2PTFE core wire radius.
S2 wrapping the shielding film sleeve,
paying off of the PTFE core wire is carried out through wire feeding equipment, the free end of the forming film tape roll is wrapped on the periphery of the free end of the PTFE core wire, the PI film surface is wound on the PTFE core wire in the wrapping process, and the axial overlapping portion adopts a mode that the PI film is lapped on the copper foil.
The ejection of compact direction that the shaping membrane area was rolled up promptly is unanimous with the ejection of compact direction of PTFE heart yearn to the overlap joint of initial end, then the synchronous operation ejection of compact, carry on the ejection of compact route axial overlap portion 4 the overlap joint operation can, thereby realize axial continuity overlap joint parcel, form shielding film cover 3.
S3, solidifying the sintering furnace,
the wire wrapped with the shielding film sleeve 3 is sintered and solidified by a sintering furnace, and the temperature in the sintering furnace is 220 +/-50 ℃.
Specifically, after the axial overlapping portion 4 of the shielding film sleeve 3 is formed in an overlapping manner, the shielding film sleeve does not have wrapping stability, and the shielding film sleeve is sintered in a sintering furnace, so that the bonding layer 7 is cured, and the bonding stability between the PI film and the PTFE core wire 2 and the bonding stability between the PI film and the copper foil overlapping of the axial overlapping portion 4 are met.
S4 coating a protective layer on the surface of the substrate,
and coating an acrylic acid protective agent on the sintered and cured wire rod, and performing heat drying and curing.
I.e. an acrylic protective layer is produced which is able to peripherally cure the shielding film sleeve 3 and at the same time acts as a corrosion-resistant seal.
S5, the sheath body is protected,
and finally, the protective sleeve body is wrapped and formed through protective sleeve wrapping equipment, namely, PVC and other protective sleeve materials are extruded through an extruder, and the protective sleeve 5 is formed on the cable.
The shielding effect of the invention is obvious, the requirement of the 5G communication shielding cable is met, and the shielding film sleeve replaces the tin-impregnated copper metal braided sleeve, so that the cable cost is greatly reduced. The shielding film sleeve formed by axially laying and axially wrapping is adopted, so that continuous longitudinal wrapping production of the shielding cable is facilitated, and the production process cost is greatly reduced. Possess the protective layer design, can increase the firm stability of shielding film cover, possess corrosion-resistant isolation demand simultaneously, prolonged communication shielded cable's life.
The technical solutions of the present invention are fully described above, it should be noted that the specific embodiments of the present invention are not limited by the above description, and all technical solutions formed by equivalent or equivalent changes in structure, method, or function according to the spirit of the present invention by those skilled in the art are within the scope of the present invention.
Claims (7)
1. Possess communication shielded cable of parcel shielding film, its characterized in that:
comprises a PTFE core wire with a plurality of guide cores inside, the periphery of the PTFE core wire is provided with a shielding film sleeve which is laid axially and wrapped circumferentially, the shielding film sleeve is provided with an axial overlapping part,
the periphery of the shielding film sleeve is provided with a protective sleeve body, the forming film belt of the shielding film sleeve is a shielding film belt formed by hot pressing of a copper foil and a PI film, and the PI film is bonded with the PTFE core wire.
2. The communication shielding cable with the wrapping shielding film according to claim 1, wherein:
and the copper foil is bonded with the PI die in the axial overlapping part.
3. The communication shielding cable with the wrapping shielding film according to claim 1, wherein:
and an adhesive layer is arranged on the PI film.
4. The communication shielding cable with the wrapping shielding film according to claim 1, wherein:
the periphery of the shielding film sleeve is coated with a protective layer.
5. The communication shielding cable with the wrapping shielding film according to claim 4, wherein:
the protective layer is an acrylic acid protective agent.
6. The communication shielding cable with the wrapping shielding film according to claim 1, wherein:
the thickness of the copper foil is 7-20 mu m, and the thickness of the PI film is 8-25 mu m.
7. A production process of the communication shielded cable based on any one of claims 1 to 6, characterized by comprising the following steps:
s1, selecting the material to be,
selecting a PTFE core wire finished product wire, and selecting a molding film belt material roll according to the peripheral size of the PTFE core wire;
s2 wrapping the shielding film sleeve,
paying off a PTFE core wire through wire feeding equipment, peripherally wrapping the free end of a forming film tape coil at the free end of the PTFE core wire, winding a PI film surface on the PTFE core wire in the wrapping process, and overlapping a PI film on a copper foil in an axial overlapping part;
s3, solidifying the sintering furnace,
sintering and solidifying the wire wrapped with the shielding film sleeve by a sintering furnace, wherein the temperature in the sintering furnace is 220 +/-50 ℃;
s4 coating a protective layer on the surface of the substrate,
coating an acrylic acid protective agent on the sintered and solidified wire rod, carrying out hot baking solidification,
s5, the sheath body is protected,
and the protective sleeve body is wrapped and formed through protective sleeve wrapping equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911416586.9A CN111029016A (en) | 2019-12-31 | 2019-12-31 | Communication shielded cable with wrapped shielding film and production process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911416586.9A CN111029016A (en) | 2019-12-31 | 2019-12-31 | Communication shielded cable with wrapped shielding film and production process thereof |
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| Publication Number | Publication Date |
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| CN111029016A true CN111029016A (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911416586.9A Pending CN111029016A (en) | 2019-12-31 | 2019-12-31 | Communication shielded cable with wrapped shielding film and production process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111508669A (en) * | 2020-04-22 | 2020-08-07 | 华迅工业(苏州)有限公司 | Method for preparing transmission cable shielding structure |
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2019
- 2019-12-31 CN CN201911416586.9A patent/CN111029016A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111508669A (en) * | 2020-04-22 | 2020-08-07 | 华迅工业(苏州)有限公司 | Method for preparing transmission cable shielding structure |
| CN111508669B (en) * | 2020-04-22 | 2021-07-06 | 华迅工业(苏州)有限公司 | Method for preparing transmission cable shielding structure |
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