What is an energy director in ultrasonic welding? | Trinetics Group

What is an energy director in ultrasonic welding?

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  4. What is an energy director in ultrasonic welding?
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  4. What is an energy director in ultrasonic welding?

An energy director in ultrasonic welding is a triangular shaped ridge of plastic molded into a part. It is typically running around the entire perimeter of a joint. When ultrasonic energy passes through the ridge, it concentrates the energy at the director’s apex. This results in rapid heat buildup, melting, and subsequent welding of the parts.

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