Method of encapsulating hard disc drive and other electrical components

A method of producing a motor component with a desired resonance spectrum comprising:

• a) providing a motor component;
• b) determining a desired resonance spectrum;
• c) placing said motor component in a mold cavity;
• d) closing said mold cavity;
• e) injecting a molten phase change material into said mold cavity;
• f) monitoring and controlling the pressure in the mold cavity;
• and
• g) monitoring and controlling one or more of a fill rate and an injection pressure of said molten phase change material to obtain said motor component with the phase change material thereon, having said desired resonance spectrum.

A method of producing an electrical device with a subcomponent having a desired resonance spectrum comprising:

• a) providing a subcomponent of said electrical device;
• b) determining a desired resonance spectrum of that subcomponent;
• c) placing said subcomponent in a mold cavity;
• d) closing said mold cavity;
• e) injecting a molten phase change material into said mold cavity;
• f) monitoring and controlling the pressure in the mold cavity;
• g) monitoring and controlling one or more of a fill rate and an injection pressure of said molten phase change material to obtain said subcomponent with the phase change material thereon, having said desired resonance spectrum;
• and
• h) assembling said electrical device using said subcomponent.