Fundamentals of Ultrasonics - PACKAGING

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Ultrasonic Sealing Systems for Packaging Applications

Plastic laminated materials such as coated metal foils, cartons and fiber boards can be bonded cost efficiently, using the Ultrasonic Packaging Sealing Technique. The same principles utilized to weld injection molded products apply, but in this type of application, the stack is typically mounted as an integral part of the packaging machine and an anvil is needed opposite of the weld horn.

Typically, the weld horn or the anvil require some type of profile structure to serve as an energy director. The profile will accelerate the welding process and provide for a more repeatable, consistent welding application. Typical applications for the ultrasonic welding of package applications are drink cartons, microwave packages and cartons, cans and cups, plastic tubes, bags and pour spouts.