Posted in | Materials Processing

Cap Sealing with Induction Heating - Video by Ameritherm

This video from Ameritherm explains the basics of cap sealing using induction heating. The food and medical industries require high-speed hermetic sealing between the cap and the container.

A cap- to-container seal is made with the aid of a laminated disc composed of a wax layer, aluminum layer, and a polyethylene (PE) layer. The aluminum layer acts as a susceptor, heating to about 125-150°C in the electromagnetic field produced by the induction coil. It then heats the wax and PE layer sufficiently to produce a hermetic seal between the cap and container. Heating times are in the order of 100 milliseconds, supporting a high-speed automated process.

Typical RF power supplies for cap sealing range from 1 to 20 kW, depending on the parts and application requirements.

Induction Cap-sealing

Run time: 1.39 mins

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