What are the advantages of ultrasonic and laser welding in plastic welding process?

Traditional plastic welding uses ultrasonic welding, but ultrasonic welding has certain limitations, such as contact welding is not conducive to mass automated production, contact welding makes the product have a certain probability of mechanical wear, and the mechanical will cause residual stress inside the product, reducing the mechanical properties of the product itself. With the development and popularization of laser and laser welding technology, laser has also developed and promoted plastic stress welding. Compared with ultrasonic welding, the advantages of laser welding in plastic parts welding include: welding accuracy, firmness, sealing, sealing, airtightness, no water leakage, and less resin degradation during welding.

锛?lt;span style="font-size: 10px; text-align: center;">Principle of Ultrasonic Welding锛?lt;/span>

Easy to control and weld workpieces with small size or complex shape and structure. Because laser is easy to control computer software, laser output can flexibly reach every tiny part of the parts. Laser welding can weld areas that are difficult to reach by ultrasonic welding methods, and weld products with complex shapes or even complex three-dimensional geometric shapes;

(Principle of Laser Welding)

Compared with ultrasonic welding methods, laser welding greatly reduces the vibration stress and thermal stress of the product. This means that the aging speed of the internal parts of the product or equipment is slower, and it can be used for products that are easily damaged. A variety of different materials can be welded. For example, through near-infrared laser polycarbonate and glass fiber reinforced black polybutylene terephthalate can be joined together, which is impossible with ultrasonic welding methods.

Among many plastic parts or products, there is a coaxial small plastic product that is difficult to achieve, or has low yield and efficiency, whether it is traditional ultrasonic welding or laser plastic welding.