FIM (Film Insert Molding) with capacitive films is a forward-looking technology. It enables, for example, the integration of functional elements with a low thickness, such as lights, sensors or touch switches, thus provides great design flexibility, especially for automotive interior and exterior applications.
The capacitive film is back-injected with Polycarbonate to appear like clear glass in the touch area of the control panel. Thanks to FLEXflow, the sensitive film doesnt encounter any stresses that normally arise from the injection process. An uncontrolled injection of one-step opening of the needle, as with conventional hot runner systems, would damage the film. Moreover, in order to inject both foils at the same time, it was necessary to keep the internal pressure in the PC glass area low. This is possible with FLEXflow because the injection profile can be set on each individual nozzle and thus a pressure profile can be set for this area.
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