Manufacturing methods of magnetomechanical electronic article surveillance markers

A method of making a magnetomechanical electronic article surveillance marker, comprising:

• providing a substrate layer;
• placing an elongated bias magnet on said substrate layer;
• depositing a cavity layer on said substrate layer, said cavity layer covering and attaching said bias magnet to said substrate layer and defining an elongated cavity adjacent said bias magnet;
• placing a magnetomechanical resonator in said cavity;
• and,
• sealing a cover onto said cavity layer wherein said resonator is captured in said cavity and free to mechanically vibrate unencumbered.

A method of making a magnetomechanical electronic article surveillance marker, comprising:

• providing a magnetizable substrate layer;
• depositing a cavity layer on said substrate layer, said cavity layer defining an elongated cavity;
• depositing a resonator support member in said cavity;
• placing a magnetomechanical resonator in said cavity, said resonator support member being disposed between said resonator and said magnetizable substrate layer;
• and,
• sealing a cover onto said cavity layer wherein said resonator is captured in said cavity and free to mechanically vibrate unencumbered.

A method of making a magnetomechanical electronic article surveillance marker, comprising:

• molding a cavity in a plastic substrate, said cavity sized to receive a magnetomechanical resonator, said substrate sized relatively slightly larger than said magnetomechanical resonator;
• placing said magnetomechanical resonator into said cavity;
• sealing a first cover layer to said plastic substrate wherein said resonator is captured in said cavity and free to mechanically vibrate unencumbered, said first cover layer being sized larger than said plastic substrate;
• placing a bias magnet on said first cover layer adjacent said plastic substrate;
• and,
• sealing a second cover layer to said plastic substrate, to said bias magnet, and to said first cover layer, wherein said bias magnet is held substantially fixed in position relative to said resonator.

A method of making a magnetomechanical electronic article surveillance marker, comprising:

• placing a bias magnet on a plastic substrate;
• molding a cavity in said plastic substrate adjacent said bias magnet, said cavity sized to receive a magnetomechanical resonator, said bias magnet being embedded into said plastic substrate substantially simultaneously with said cavity formation;
• placing a magnetomechanical resonator into said cavity;
• sealing a cover layer to said plastic substrate wherein said resonator is captured in said cavity and free to mechanically vibrate unencumbered.

A magnetomechanical electronic article surveillance marker, comprising:

• an EAS marker housing having a cavity sized to receive a magnetomechanical resonator, said magnetomechanical resonator disposed in said cavity;
• a cover sealed to said housing and capturing said resonator within said cavity;
• a bias magnet disposed adjacent said resonator;
• said housing including a relatively flexible portion adjacent said cavity, said flexible portion adapted to bend around a curved surface to facilitate attaching the marker to the curved surface.