The ultrasonic welding process is a summary of our systematic research into ultrasonic plastic welding. Ultrasonic welding is almost applicable to all thermoplastic plastic products, featuring high welding strength, fast production efficiency, excellent product quality, environmental friendliness, aesthetic appearance, and compact production space. This process systematically discusses the compatibility, reliability, strength of commonly used structural materials after welding, the relationship between plastic properties and welding, welding methods, and welding requirements. The ultrasonic plastic welding machine boasts unique advantages:
Ultrasound plastic welding has become an indispensable process in the manufacturing of plastic products, due to its non-use of organic adhesives, making it safe and clean.
This advanced technology, introduced and promoted from abroad, significantly enhances fusion quality, thereby resulting in exceptionally high strength.
High production efficiency, reduced product weight, alleviating labor intensity, cost reduction, and accelerated production turnover.
The difficulty of ultrasonic plastic welding is related to the characteristics of the plastic material being welded. The term "difficulty" refers to the amount of energy required during welding. Plastics with a higher coefficient of friction and poorer thermal conductivity tend to form a molten state more easily at the interface, indicating better ultrasonic welding properties. The harder the plastic, the easier the ultrasonic welding during flat welding, as the vibration transmission loss is smaller (larger for softer materials). Of course, soft plastics can also be welded using a 40kHz ultrasonic welding machine, which offers a significant improvement over using a 20kHz ultrasonic welding machine.
Crystalline plastics have poorer welding properties compared to amorphous materials due to their narrow temperature range for transitioning from solid to molten state, which is also very rapid. Soft plastics exhibit better ultrasonic welding performance during riveting and insert welding than hard plastics.
Ultrasonic Welding Performance of Common Plastics: ABS, HIPS, PMMA, MPPO; these rigid, non-crystalline materials are highly conductive to 20kHz ultrasonic frequencies, making them particularly suitable for ultrasonic welding. Both long-distance and short-distance welding yield excellent results. Typically, a conductive triangular rib, or welding line design, is added to the product's welding surface.
Wuxi Nice Ultrasonic Equipment Manufacturer has been specializing in the field of ultrasonic plastic welding since 2004. If you have any needs, feel free to contact us at any time. We offer professional welding analysis and support free samples.