Copper ions are highly reactive in the presence of air and can easily react with oxygen ions to form copper oxide. While we treat the surface of copper foil with room temperature anti-oxidation processes during production, this treatment only delays the oxidation of copper foil. Therefore, it is recommended to use copper foil as soon as possible after opening. Unused copper foil should be stored in a dry, light-resistant area and away from volatile gases. The recommended storage temperature for copper foil is approximately 25 degrees Celsius, with humidity not exceeding 70%.

Slightly oxidized copper foil surfaces can be cleaned using an alcohol sponge. However, for long-term or extensive oxidation, a sulfuric acid solution is required to clean and remove oxidation.

Cable taping methods include longitudinal taping and cross taping. Cross taping further divides into traverse taping and diagonal taping. Longitudinal taping is used for core wires where no overall stranding is required, and it does not require flexibility. Traverse taping is a high-speed process with good flexibility.

Films laminated aluminum foil with hot melt adhesive are divided into two types: aluminum/PE shielding films and aluminum/PVE shielding tapes. They use MQ-40 high-molecular-weight polymer as heat-sealing glue, which is non-toxic and eco-friendly and complies with the latest version of the EU RoHS environmental regulations. The other type is self-adhesive film laminated aluminum foil, which uses genuine EAA self-adhesive film, ensuring good heat-sealing bonding effects at lower preheating temperatures and long-term stability.

Copper/PET shielding tapes is primarily used in various fields, such as extremely fine coaxial wires, low-loss antennas (computers), solar cell wires, etc.

EMI solutions include three main approaches: electromagnetic interference shielding, printed circuit board grounding, and electromagnetic interference absorption.

• Electromagnetic Interference Shielding involves blocking electromagnetic noise and attenuating cable-collected noise. It uses high-reflectance materials (usually low-resistance metals) to encase or seal openings in target devices for EMI and EMS solutions.
• Printed Circuit Board (PCB) Grounding refers to grounding electronic equipment electrically to prevent electric shock, treating the Earth as a massive conductor at zero electric potential. Two grounding methods are employed: frame grounding and signal grounding on PCBs.
• Electromagnetic Interference Absorption (EMI Absorption) utilizes magnetic loss, dielectric loss, and conduction loss to convert radio wave energy into thermal energy. EMI absorbers have a wide range of applications.