Magnetomechanical tag used in electronic article surveillance and method of manufacturing a magnetomechanical tag
AssigneeSensormatic Electronics Corporation
InventorNen-Chin Liu
Life of this patent
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Abstract
A magnetomechanical tag for use in an electronic article surveillance (EAS) system and a method of manufacturing the magnetomechanical tag may be provided. The EAS may include at least one resonator, a housing configured to allow vibration therein of the at least one resonator and a cover heat sealed to the housing at a heat sealing temperature. The EAS tag further may include a powder lubricant within the housing. The powder lubricant may have a melting temperature less the heat sealing temperature.
Claims20
An electronic article surveillance (EAS) tag comprising:
- at least one resonator;
- a housing having a sealing portion, the housing being configured to allow vibration therein of the at least one resonator;
- a cover heat sealed to the sealing portion of the housing at a heat sealing temperature;
- and
- a powder lubricant within the housing, the powder lubricant applied to the sealing portion of the housing and to the at least one resonator, the powder lubricant having a melting temperature less than the heat sealing temperature.
A method for sealing an electronic article surveillance (EAS) tag, the method comprising:
- applying a powder lubricant to a sealing portion of the EAS tag and to at least one resonator to lubricate the at least one resonator, the powder lubricant having a melting temperature less than a heat sealing temperature;
- and
- heat sealing the sealing portion by melting the powder lubricant.
A method for assembling an electronic article surveillance (EAS) tag, the method comprising:
- positioning a lidstock cover over a coverstock housing such that an edge of the lidstock cover aligns with an edge of a flange of the coverstock housing;
- applying a powder lubricant to the flange of the coverstock housing and to at least one resonator inside the coverstock housing, the powder lubricant having a melting temperature less than a heat sealing temperature;
- and
- heating the flange of the coverstock housing wherein a bonding layer comprising the powder lubricant melts to seal the lidstock cover and the coverstock housing.
Dependencies are inferred from the claim text.