How to Distinguish Single-conductor Copper Foil Adhesive Tape and Double-conductor Copper Foil Adhesive Tape?
Copper foil adhesive tape is a metal tape, mainly used in electromagnetic shielding: electrical signal shielding and magnetic signal shielding. Electrical signal shielding mainly relies on the excellent electrical conductivity of copper itself, while magnetic shielding requires the conductive material "nickel" of the copper foil adhesive tape to achieve magnetic shielding. Therefore, it is widely used in mobile phones, laptops and other digital products.
Characteristics of Copper Foil Adhesive Tape:
1. Copper foil has low surface oxygen characteristics and can be attached to various substrates, such as metals and insulating materials, and has a wide temperature range. It's mainly used in electromagnetic shielding and antistatic. Put the conductive copper foil on the substrate surface, combine with the metal substrate, which has excellent conductivity and provides an electromagnetic shielding effect.
2. The purity of the copper foil adhesive tape is higher than 99.95%, and its function is to eliminate electromagnetic (EMI) interference, isolate the harm of electromagnetic waves to the human body and avoid unnecessary voltage and current to affect the function.
3. Copper foil adhesive tape has a good effect on the static discharge of objects after grounding. It has strong adhesion and good conductivity.
Classification of Copper Foil Adhesive Tape
Copper foil adhesive tape is divided into single-sided adhesive coating and double-sided adhesive coating.
Single-sided coated copper foil adhesive tape is divided into single-conductor copper foil adhesive tape and double-conductor copper foil adhesive tape. Single-conductor copper foil adhesive tape means that the coated surface is not conductive. Only the other side of copper is conductive; double-conducting copper foil adhesive tape means that the rubber-coated surface is conductive, and the copper itself is also conductive as well. Model-cutting tape is therefore called double-conducting, which means both sides are conductive.
Single and Double Conductor Copper Foil Conductive Tape can be Distinguished from the Following Two Methods
From the appearance:
tear off a short section from the copper foil tape to check the adhesive surface. The adhesive surface of the single-conductor copper foil adhesive tape has no small metal particles and is flat; while the adhesive surface of the double-conductor copper foil adhesive tape contains small metal particles (metal particles play a conductive role), which is slightly uneven.
Through the Test:
Use a low-resistance tester to measure. The general resistance value of the double-conductor copper foil adhesive tape is 0.01-0.03Ω, and the single-conductor copper foil adhesive tape will not have current going through it.