Communication cable and production process thereof

Abstract

The invention discloses a communication cable. The communication cable comprise a cable core which comprises a conductor, a spiral hollow pipe, an insulation pipe, a silver belt layer, a sliver wire weaving layer and a protecting bush pipe are wrapped outside the conductor. The invention also discloses a production process of the cable. The production process comprises the following steps of: (A) extruding and stretching the insulation hollow pipe; (B) twisting the stretched insulation hollow pipe by pairs; (C) wounding the twisted insulation hollow pipe by pairs on the conductor by butting joint; (D) pushing and extruding a PTFE (Polytetrafluoroethylene) insulation layer outside the insulation hollow pipe; (E) lapping a single crystal silver-plated copper belt and shielding; (F) weaving the single crystal silver-plated copper wires; (G) extruding a plastic protecting bush layer; (H) stranding and cabling the cable core and the hollow pipe; (I) lapping a PTFE film outside the formed cable; (J) lapping a total shielding crystal silver-plated copper belt on the cabled yarns; (K) weaving the total shielding single crystal silver-plate copper wire by the cabled yarns; and (L) extruding an outer protecting bush by the cabled yarns, namely forming the cable. The communication cable disclosed by the invention not only prevents interference, but also is stable in transmission signals.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to a communication cable and its production process. Background technique [0002] Communication cables are mainly used to transmit audio, analog signals of 150kHZ and below, and digital signals of 2048kbit / s and below. Under certain conditions, it can also be used to transmit digital signals above 2048kbit / s. It is suitable for overhead or pipeline laying lines in the city, suburbs and local areas, and can also be directly buried. [0003] At present, there are more than 13,000 kinds of cables in the world, and there are more than 7,000 kinds in China, of which more than 6,000 kinds of special cables are imported. The insulated core of the traditional cable is shielded by a support bar between the insulating layer and the conductor, and the transmission signal of this insulated core is unstable. Moreover, these existing communication cables have poor anti-interference performance...

AI Technical Summary

Problems solved by technology

The insulated core of the traditional cable is shielded by a support bar between the insulation layer and the conductor. This kind of insulated core has unstable transmission signals.

Moreover, these existing communication cables have poor anti-interference performance and poor shielding effect.

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