Ultrasonic Welding Nonwovens Material

Can polypropylene be ultrasonic welded?

    The chemical and physical properties of polypropylene plastic parts are that they are semi - crystalline, harder and have a higher melting point than PE. Typical application industries of polypropylene plastic parts are: automotive industry ( mainly using PP containing metal additives: fenders, ventilation pipes, fans, etc.), equipment ( dryer ventilation pipes, washing machine frames and covers, refrigerator door gaskets) etc., consumer goods ( lawn and garden equipment such as lawnmowers and sprinklers, etc. ).

    At present, the most environmentally friendly bags are non woven felt for bags, and the ultrasonic welding non woven fabric is currently the most used. Its working principle: It uses high - frequency oscillation to transmit the sound wave to the welding surface of the workpiece by the welding head, and instantly causes the friction of the workpiece molecules to reach the melting point of the plastic, so as to complete the rapid dissolution of the solid material and complete the welding. The joint strength is close to that of a single piece of continuous material, and as long as the joint surface of the product is designed to match, there is absolutely no problem with complete sealing.

    Compared with traditional needle stitching, ultrasonic Welding Nonwoven has the following advantages:

    1. It uses ultrasonic welding, eliminating the need for needles and threads, saving the trouble of frequently changing needles and threads. Ultrasonic welding nonwovens does not have the broken splices of traditional thread stitching, and also provides a neat partial cut and seal of textiles. The stitching also plays a role in decoration. It has strong adhesion and can achieve waterproof effect. The embossing is clear, and the surface has a three - dimensional relief effect. The working speed is fast, the product effect is good, and the quality is guaranteed.

    2. It is processed by ultrasonic wave and special steel wheel. The sealed edge does not crack or damage the edge of the cloth. It has no burrs and curling.
    3. Ultrasonic welding fabric does not need to be preheated during manufacture and can be operated continuously.
    4. It is easy to operate. It is not much different from the traditional sewing machine operation method, and ordinary sewing workers can operate it.
    5. Its cost is low, 5 to 6 times faster than traditional machines. That is high efficiency.