The function of copper foil tape is to eliminate electromagnetic interference


The purity of the copper foil tape is higher than 99.95 […]

The purity of the copper foil tape is higher than 99.95%. Its function is to eliminate electromagnetic interference (EMI), isolate the electromagnetic waves from harming the human body, and avoid affecting the function without the need of voltage and current. In addition, it has a good effect on the discharge of static electricity after grounding. With strong adhesive force and good electrical conductivity, it can be cut into various specifications according to customer requirements.


The use of copper foil tape:


Copper foil tape is suitable for all kinds of transformers, mobile phones, computers, PDAs, PDPs, LCD monitors, notebook computers, copiers and other electronic products where electromagnetic shielding is required.


It is a metal tape, mainly used for electromagnetic shielding, divided into electrical signal shielding and magnetic signal shielding. Electrical signal shielding mainly depends on the excellent electrical conductivity of copper itself, while magnetic shielding requires conductive material on the surface of copper foil tape. "Nickel" to achieve the role of magnetic shielding, so it is widely used in mobile phones, notebook computers and other digital products. The general inspection performance of the most commonly used copper foil tape on the market is as follows: Material: CU 99.98%


Substrate thickness: 0.007mm-0.075mm


Adhesive thickness: 0.015mm~0.04mm


Colloid composition: ordinary pressure sensitive adhesive (non-conductive) and conductive acrylic pressure sensitive adhesive


Peeling force: 0.2~1.5kgf/25mm (180 degree reverse peeling force test)


Temperature resistance -10℃---120℃


Tensile strength 4.5~4.8kg/mm


Elongation 7%~10%MIN



common sense


1. The test conditions are normal temperature 25℃ and relative humidity below 65℃ using the results of American ASTMD-1000.


2. When storing the goods, please keep the room dry and ventilated. The domestic copper is generally stored for 6 months, and the importing country can be stored for a longer time and not easy

to oxidize


3. The product is mainly used to eliminate electromagnetic interference EMI, to isolate the harm of electromagnetic waves to the human body, mainly used in computer peripheral wire, computer monitor and transformer manufacturers.


4. Copper foil tape is divided into single-sided adhesive and double-sided adhesive. Single-sided coated copper foil tape is divided into single-conductor copper foil tape and double-conductor copper foil tape. Single-conductor copper foil tape means that the coated surface is non-conductive, and only the other side of copper is conductive, so it is called single-conductor that is single-sided conductive ; Double-conducting copper foil tape means that the rubber-coated surface is conductive, and the copper on the other side is also conductive, so it is called double-conducting. There are also double-sided coated copper foil tape used to process into more expensive composite materials with other materials. The double-sided coated copper foil is also divided into conductive and non-conductive surfaces. Customers can according to their own needs for conductive To choose.