Ultra-fine cable applied shielding protection sheath film and production technology thereof

Abstract

The invention provides an ultra-fine cable applied shielding protection sheath film and production technology thereof. The structure of the shielding protection sheath film comprises a copper foil layer, a PET layer and a binding layer between the copper foil layer and the PET layer. One face of the copper foil layer and one face of the PET layer that face the binding layer are provided with electronic corona uneven faces. The copper foil layer, the binding layer and the PET layer are bond together as an entire body. The production technology of the ultra-fine cable applied shielding protection sheath film comprises the following steps: preparing materials, preparing binding agent, composing, placing and solidifying, separating and winding to attain a finished product. According to the invention, the copper foil layer in the shielding protection sheath film enables the shielding protection sheath film to possess good shielding, insulating, anti-wearing and anti-corrosion functions so that the inner cores of a cable are better protected and the quality of an ultra-fine cable improves. The production technology ensures that a shielding protection sheath film becomes thinner and narrower. The shielding protection sheath film can be designed as thin as 13 mu and as narrow as 1.5 mm to the best, thereby making an already ultra-thin cable finer and thinner. Further, the production technology process is simple, cost-effective and high efficient.

Description

technical field [0001] The invention relates to a shielding sheath film, in particular to a shielding sheath film applied to ultra-thin cables and a production process thereof. Background technique [0002] In recent years, the trend of miniaturization of consumer electronic products represented by mobile phones and notebook computers, communication, medical and military electronic products has accelerated, and performance requirements have been continuously improved. Ribbon cables and flexible circuits that transmit various frequency signals in these products Traditional wiring components such as boards (FPC) are quickly replaced by ultra-thin coaxial cables with high transmission rates, wide frequency bands, and strong resistance to electromagnetic interference. Especially the popularization of mobile communication in the mid-1990s promoted the research and development and mass production of ultra-thin coaxial cables. This type of ultra-thin cable has the following charac...

AI Technical Summary

Problems solved by technology

This type of ultra-thin cable has the following characteristics: the outer diameter of the single-core coaxial cable is extremely small, and it has strict requirements on the width and thickness of the sheath; the cable has good mechanical and physical properties, especially for connecting movable modules. The cable has strong resistance to bending and torsion; the working voltage of the cable is usually low, but because its insulation is very thin, it is required that the insulation layer should be able to withstand a high breakdown field strength; in most cases, the space used for the cable is narrow, The heat dissipation condition is poor, and the cable should have a higher temperature resistance level

[0003] In the prior art, since the sheath layer is generally extruded plastic, the commonly used plastics are FEP, PFA, ETFE (ethylene-tetrafluoroethylene copolymer) and PVC (polyvinyl chloride), or wrapped with a layer of self-adhesive polyvinyl chloride. Ester (PET) film, the sheath layer has a single function, and the functional film is thicker, which cannot meet the needs of ultra-thin cables

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