What is copper foil tape?
Copper foil tape is a type of metal tape. It is mainly used for electromagnetic shielding, electrical signal shielding and magnetic signal shielding.
Shielding of electrical signals mainly depends on the excellent electrical conductivity of copper itself, while magnetic shielding requires the conductive surface material “nickel” of copper foil tape to achieve the role of magnetic shielding. Therefore, it is widely used in mobile phones, notebook computers and other digital products.
Classification of copper foil tape
Copper foil tape is divided into single-sided adhesive copper foil tape and double-sided adhesive copper foil tape.
The single-sided adhesive copper foil tape is divided into copper foil tape with conductive adhesive and non-conductive adhesive.
1. Copper foil tape with non-conductive adhesive means that the rubber-coated surface is not conductive, and only the other side is copper-conducting.
2. Copper foil tape with conductive adhesive refers to the conductive surface of the coating, and the other side of the copper is also conductive. Die-cut tape is called dual-conductivity, that is, double-sided conductive.
Double-sided adhesive copper foil tape is used to be processed into expensive composite materials with other materials. The double-sidedly coated copper foil is also divided into conductive and non-conducting types. Customers can choose according to their own need for electrical conductivity.
Copper foil tape characteristics
Copper foil has low surface oxygen properties and can be attached to a variety of different substrates, such as metals, insulating materials, etc., and has a wide temperature range of use. Mainly used in electromagnetic shielding and antistatic, conductive copper foil placed on the substrate surface, combined with metal substrate, has excellent continuity, and provide electromagnetic shielding effect.
The purity of the copper foil tape is higher than 99.95%, and its function is to eliminate electromagnetic interference (EMI), isolate the electromagnetic wave from harm to the human body, and avoid the need for voltage and current to affect the function.
In addition, the copper foil tape has a good effect on the electrostatic discharge after the object is grounded. Its strong adhesive force and good electrical conductivity, we can cut to various specifications according to customer requirements. Copper foil tape is very versatile.
Copper foil tape substrate
Copper foil, conductive acrylic adhesive, good adhesion, strong adhesion.
Copper foil tape performance
Copper foil tape has thermal insulation, heat insulation, waterproof, good adhesion, cold resistance, easy to tear, can eliminate electromagnetic interference (EMI), isolation of electromagnetic waves harm to the human body, to avoid voltage or current effects of several properties.
Copper foil tape is mainly used in computer monitors, as well as computer peripheral wire and transformer manufacturing. It is used in the pipeline joints of central air conditioning pipelines, smoking machines, refrigerators, and water heaters. It is also used in precision electronic products, computer equipment, wires and cables. Other places; In the high-frequency transmission, electromagnetic interference can be isolated, high temperature to prevent spontaneous combustion.
Copper foil tape application
Generally applicable to all kinds of transformers, mobile phones, computers, PDA, PDP, LCD monitors, notebook computers, copiers and other electronic products where electromagnetic shielding.
Copper foil tape inspection performance
The general inspection performance of the most commonly used copper foil tape on the market is as follows:
Material: CU 99.98%
Substrate thickness: 0.018mm-0.05mm
Adhesive thickness: 0.035mm~0.04mm
Colloidal composition: ordinary pressure sensitive adhesive (non-conductive) and conductive voltage gram pressure-sensitive adhesive
Peeling force: 1.0 ~ 1.5kg/25mm (180 degree reverse peel force test)
Temperature resistance -10°C—120°C
Tensile strength 4.5～4.8kg/mm
Elongation 7% to 10% MIN
Copper foil tape application knowledge
1. The test conditions are normal temperature 25°C, and the relative humidity below 65°C adopts the results detected by the United States ASTM D-1000;
2. When the goods are stored, please keep the room dry and ventilated. The domestic copper storage time is generally 6 months, and the importing country can save more time and it is not easy to oxidize;
3. The product is mainly used to eliminate electromagnetic interference (EMI), and to isolate the harm of electromagnetic waves to the human body. High-temperature tapes are mainly used in computer peripheral cables, computer monitors and transformer manufacturers.
Electronic grade copper foil (purity above 99.7%, thickness 5um-105um) is one of the basic materials for the electronics industry. In recent years, the electronic information industry has developed rapidly and the use of electronic grade copper foil is increasing.
Products are widely used in industrial calculators, communications equipment, QA equipment, lithium ion batteries, civilian televisions, video recorders, CD players, copiers, telephones, heating and air conditioning, automotive electronic components, game consoles and so on.
The demand for electronic-grade copper foils, especially high-performance electronic-grade copper foils, is increasing at home and abroad.
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