what kind of tape is used in electronic devices
Kapton (polyimide) tape is brown, like the flat flex cables. The tape in the photograph is clearly green and seems to be polyester tape, not polyimide--powder coating masking tape, specifically.

It is similar to Kapton in its mechanical properties (including heat resistance) and uses a similar silicone adhesive, but costs less and has poorer chemical and radiation resistance. No doubt cost was more important than inertness in this application, which must have motivated the choice of polyester tape.

You could certainly use Kapton if you prefer--it depends on your requirements for volume and whatever other applications you might have in mind for it as to which would be more economical.