Anti-copper foil shielding cracking type flame-retardant coaxial video cable

By adopting a double-layer structure of copper-plastic composite longitudinal shielding and tinned copper wire braided shielding in coaxial video cable, combined with the ETFE gap wrap friction reduction layer, ferrite film inner cushion layer and irradiated crosslinked high-density polyethylene sheath layer, the problem of the copper foil shielding layer being prone to crack when bending is solved, and stable signal transmission and high-quality high-definition video transmission are achieved.

CN222672677UActive Publication Date: 2025-03-25ZHEJIANG YUANTONG WIRE & CABLE MFG CO LTD
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Patent Information

Application Number
CN202421267798.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-05
Publication Date
2025-03-25
Estimated Expiration
2034-06-05

AI Technical Summary

Technical Problem

When existing coaxial video cables are bent, the copper foil shielding layer is prone to cracking, resulting in unstable signal transmission characteristics, affecting the quality of high-definition video transmission, and being undustable for use.

Method used

The anti-copper foil shielding cracked flame-retardant coaxial video cable is adopted, and a double-layer shielding structure with copper-plastic composite longitudinal shielding and tin-plated copper wire braided shielding is adopted. The ETFE gap wrapping friction reduction layer, ferrite film inner cushion layer and irradiated cross-linked high-density polyethylene sheath layer are coated on the outside to improve flexibility and durability.

Benefits of technology

Through the design of the double-layer shielding structure and friction reducing layer, the stress concentration of the copper foil layer is reduced, cracking is suppressed, the stability of signal transmission characteristics is ensured, and the high-definition video transmission quality and cable durability are improved.

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Abstract

The utility model discloses an anti-copper foil shielding cracking type flame-retardant coaxial video cable, which comprises a stainless steel monofilament conductor, and a plurality of silver-plated copper wires are woven on the outer surface of the stainless steel monofilament conductor and are tightly pressed to form a copper net conductor layer. A PP insulating layer, a copper-plastic composite longitudinal wrapping shielding layer, an ETFE gap wrapping antifriction layer, a tinned copper wire woven shielding layer, a ferrite film inner cushion layer and an irradiation crosslinking high-density polyethylene sheath layer are sequentially wrapped outside the copper net conductor layer, the copper-plastic composite longitudinal wrapping shielding layer is of a copper-plastic composite belt longitudinal lap joint wrapping structure, and the thickness of the copper-plastic composite longitudinal wrapping shielding layer is 16-40 micrometers. The copper-plastic composite belt is formed by bonding a copper foil layer and a PET film base layer into a whole, and the tinned copper wire braided shielding layer is of a structure formed by spirally winding and braiding a plurality of tinned copper wires in reverse directions. In a bending state, the coaxial video cable has better flexibility, is beneficial to inhibiting the copper foil shielding layer from cracking, ensures stable signal transmission characteristics, improves high-definition video transmission quality, and has better durability.
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