Cokato, Minnesota 55321
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The basic requirement of any ultrasonic joint design is a small, uniform initial contact area.The design varies with each application and depends on factors such as type of plastic resin to be bonded,part geometry and requirements of the weld.
Normally a triangular section on the joint that serves to concentrate ultrasonic energy and rapidly initiates melting of the joining surfaces. Common joints, which incorporate the use of an energy director, include: butt joints, step joints, and tongue and groove joints.
This type of joint is preferred for parts that require a hermetic seal or for plastics that change rapidly from a solid to molten state over a very narrow temperature range.