Copper foil tape is a kind of metal tape, which is divided into single-conducting copper foil and double-conducting copper foil tape. Single-conducting copper foil tape means that the laminating surface does not conduct electricity, and only the other side of the copper conducts electricity. Double-conducting copper foil tape means that the laminating surface conducts electricity, and the other side of the copper itself also conducts electricity. They are mainly used for electromagnetic shielding. Electromagnetic shielding is divided into electrical signal shielding and magnetic signal shielding, electrical signal shielding is mainly dependent on the excellent conductivity of copper itself, while magnetic shielding needs copper foil tape adhesive surface conductive material "nickel" to achieve the role of magnetic shielding, which is widely used in cell phones, notebook computers and other digital products.
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