The silver line is printed with carbon oil, but it may not solve the problem.
Use FPC or PCB as wiring.
PCB membrane switch, silicone rubber PCB membrane switch, silicone rubber Copper flexible membrane keypad and Copper flex membrane switch
Silver membrane switch panels, silicone rubber silver membrane switch panels.
Flex membrane switch
Copper flex membrane switches
Rigid membrane switch includes:
PCB membrane switches
Silicone rubber membrane switch
For more information, please look at the blog post titled: user interface products for withstanding harsh environments
Contact membrane keypad manufacturer Niceone Tech now regulating your user interface assembly. Visit our product gallery to learn more about the various constructions and product features we can offer, and learn how Niceone Tech can customize your membrane switch assembly to meet and exceed your unique application requirements
Flexible & rigid membrane switch assemblies (FPC membrane switch, silver flex membrane switches, and PCB membrane switch). Niceone-tech custom membrane switch panel will be based on product application, circuit density, conductivity, resistance, whether many electronic components are required, operating environment, customer budget, and whether to pay attention to silver migration. Silver migration usually occurs in Silver Flex Membrane Switches, which is caused by high voltage and humid environments.