Modification of High-Precision Conductive Shielding Mylar Material and Research on Intelligent Die-Cutting Technology
DOI:
https://doi.org/10.56397/JPEPS.2025.10.03Keywords:
conductive shielding Mylar material, vacuum sputtering-electroplating composite process, intelligent die-cutting technology, shielding effectiveness, adhesion, weather resistance, die-cutting precision, yield rate, 5G communication, new energy vehicles, electromagnetic interference protection, material modification, high-precision die-cutting, application verification, industrial applicationAbstract
With the rapid development of 5G communication and electronic devices in new energy vehicles, the demand for high-precision conductive shielding Mylar materials is increasing. This study successfully developed conductive shielding Mylar materials with a shielding effectiveness of 45–50 dB by modifying PET substrates using a vacuum sputtering-electroplating composite process, which is significantly higher than that of domestic counterparts (typically below 35 dB) and comparable to high-end imported materials. The adhesion test results showed that the modified material achieved a 4B level in the cross-cut test, with no detachment after 3M tape adhesion, indicating excellent adhesion. Additionally, the modified material exhibited good weather resistance, with a color difference (ΔE) of only 1.2 after 1000 hours of UVB-313 lamp irradiation.
