Developing Ultrasonic Welding Technology for Multilayer Polymeric Films

The paper discusses some properties of multilayer polymer films, as well as their welding methods. The choice of method for ultrasonic welding of multilayer polymer films is justified, and the advantages of the method are listed. Strength, thermal, chemical and other characteristics of multilayer polymer films were determined as the result of ultrasonic welding experiments. The authors developed and manufactured ultrasonic welding devices and waveguides, which provided good strength properties and appearance of the products. Optimal modes of ultrasonic welding of multilayer polymer films were developed and tested. The mechanism of welding three-layer material was determined. The quality of the welded joints was dependent upon spatial interaction between macromolecules of the welded films. As the result of this work, the efficiency of the process of ultrasonic welding of multilayer films was increased while providing the necessary strength of the welded joints.

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