Shielding film used for cable, manufacturing method of shielding film, and manufacturing method of wire rod

Abstract

The embodiment of the present invention discloses a shielding film used for a cable, a manufacturing method of the shielding film, and a manufacturing method of a wire rod. The shielding film comprises a first metal layer used for shielding the electromagnetic interference, and the first metal layer is used to cover the ecderon of a conductor of the cable and is equipped with a conductive layer. The conductive layer is equipped with a second metal layer used for cooperating with the conductive layer to shield, and the second metal layer is equipped with an insulating layer which cooperates with the ecderon of the conductor to enable the conductive layer and the first metal layer to be insulating with the conductor and the outside world. According to the embodiment of the present invention, a same or better effect can be realized by changing a conventional process of needing multiple wrapping and braiding operations into a process of just needing to wrap the shielding film once, thereby reducing the consumption of the raw materials substantially, and reducing the production cost. Because of the reduction of technologies, the production efficiency also can be improved substantially, and the equipment investment is reduced. In addition, the processes, such as an electroplate process, etc., are not needed, so that an environment is not polluted.

Description

technical field [0001] The invention relates to the field of wire rod manufacturing, in particular to a shielding film for cables, a manufacturing method and a wire rod manufacturing method. Background technique [0002] In the cable production industry with signal transmission lines and / or power transmission, in order to reduce impedance, attenuation, prevent signal interference and prevent loss during internal transmission, shielding is usually added to the wire for shielding. [0003] In order to solve this problem, in the prior art, it is necessary to use at least two layers or shielding materials and at least two processing steps to carry out layer-by-layer cladding, that is, after the conductor is formed and the outer surface of the conductor is covered with a coating, First, a layer of Mylar aluminum foil needs to be coated, and then the metal braiding layer is carried out on the Mylar aluminum foil, and according to the shielding requirements, more than one covering ...

AI Technical Summary

Problems solved by technology

[0004] However, using this shielding method requires more than one covering braiding process, consumes a lot of raw materials, and invests a lot of equipment for weaving, resulting in a greatly increased production cost. The environment is more polluted

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