Polymer-bonded magnets with a multi-polar structure can be cost effectively produced by injection molding of polymers with magnetic fillers. Permanent magnets are incorporated inside the mold to orient and magnetize the fillers during injection molding. The investigations show that the magnetic mold design, the processing parameters and the properties of the filled polymer significantly influence the orientation of the magnetic fillers and therefore the multi-polar magnetic properties. Magnetic simulations are carried out to predict the resulting magnetic properties of the molded magnets.
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