Method for the production of an electrotechnical device

A method for producing a moulded interconnect device (MID) for connecting electronic components, comprising the following steps:

• a) applying a first electrically conductive layer to a support sheet;
• b) covering the first conductive layer with a structured mask;
• c) producing conductor tracks by selectively depositing a second electrically conductive layer by means of an electrodeposition process on the first conductive layer into a number of openings or windows of the mask;
• d) removing the mask, resulting in the production of a conductor track sheet, said conductor track sheet including the support sheet, the first electrically conducting layer, and a three-dimensional conductor track structure adhering thereto;
• e) combining the conductor track sheet produced in step d) and a plastic body in order to complete the moulded interconnect device (MID);
• f) peeling away the support sheet;
• g) removing the first conductive layer;
• wherein the mask and/or the process from step c) is adapted so as to form a microscopically rough surface and/or an increasing cross-sectional width of the conductor tracks with increasing distance from the first electrically conducting layer, thereby producing an interlocking structure for mechanically locking with the plastic body joined to the conductor track sheet in step e).