Advantages of Thick Copper Foil Mylar Tape（Cu/PET 25/50） in Shielding Performance
With increasingly complex electromagnetic environments and rising signal transmission frequencies, cables are subject to higher shielding requirements. Thick copper foil mylar tape has become a preferred material for cable production thanks to its superior shielding properties.
We use Cu/PET 25/50μm compared with conventional thin copper foil polyester tape CU/PET 15/23μm ,the thick copper foil features larger conductive cross-section and lower resistance. It efficiently diverts electromagnetic interference and surge current to ground, minimizing signal leakage and external noise intrusion. It also delivers remarkable enhancement in low-frequency magnetic shielding, well suited for power control, new energy, high-speed communication and other interference-prone applications.
Boasting excellent toughness, the tape fits closely and smoothly during cabling wrapping. No shielding gaps occur at overlapping joints, forming an intact enclosed shielding layer. It effectively blocks interference penetration and crosstalk, ensuring stable and accurate signal transmission.The thick copper foil withstands higher instantaneous current with strong resistance against lightning strikes and voltage surges. It also possesses great mechanical strength and corrosion resistance. Its shielding performance remains stable without aging degradation under long-term outdoor, buried and high-temperature working conditions, fully meeting stringent shielding standards for high-end cable
| Spec. | Average total thickness | Tensil strength(Mpa) | Elongation at break |
| Cu 25/PET50 | 78μm | 139 | 21% |
Below is Cu 25/PET 50 of physical characters
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