Curing ink on aluminum bottle caps

Objective

Heat aluminum bottle caps to 428ºF (220ºC) for curing the ink 

End Product

Bottle caps

Equipment

• Ambrell 30 kW induction heating system, equipped with a remote workhead containing eight 0.33µF capacitors for a total of 2.64 µF

• An induction heating coil designed and developed specifically for this application. 

Materials

Aluminum bottle cap 2.36” (60mm) tall, 1.18” (30mm) diameter & 0.01” (0.3mm) thick 

Temperature

428ºF (220ºC)

Frequency

73 kHz

Testing

A double channel coil is used for the ink drying application. Fifteen bottle caps are placed inside the coil and power is applied for 3 seconds to dry the ink. 

Benefits

• Increased production over hot air drying 

• Drastically reduced the drying floor space and exhaust requirements.

• Hands free operation 

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