In this MID production process, a plastic which can be metallised and one which cannot be metallised are injected into an MID base body in two steps.
2C injection moulding – production of complex MIDs
Two component injection moulding is a process for producing MID base bodies. In two separate steps one metallisable and one non-metallisable plastic are injected to form one base body. The ampacity can be determined over the surface area of the metallisable plastic. The metallisable component with the conductor paths is subsequently made electrically conductive using an electroless metallisation process. Finally the completed body is equipped with further components such as SMDs and tested for full functionality.
Advantages and disadvantages of the 2C injection mould
In this procedure it is advantageous that no additional steps are necessary after the injection moulding and before the metallisation process. The disadvantage is the high cost of tools due to the production of our own moulds for each part. Any changes to the structure or layout of the MID, therefore, requires the production of new tools, which are expensive. Consequently, this procedure is usually only used for very large quantities. Laser direct structuring, on the other hand, is more flexible and also 3D-enabled.