Ultrasonic is widely used in plastics’ fusion. Here are some common fusion methods.
1. Ultrasonic welding
The principle of ultrasonic welding machine: The ultrasonic welder generator generates high pressure and high frequency signal, and pass it to plastic parts through ultrasonic horn. During this process, plastic parts’ internal molecular friction and plastic contact surface and the the workpiece surface produces high temperature to make the plastic joint surface fuse quickly, and after the ultrasonic wave stops, the two plastic parts are welded together after a short pressure-retaining cooling .
The application material of ultrasonic welding machine: ultrasonic welders are generally applicable to some materials lie nylon, polyester, polypropylene, some polyethylene products, improved acrylic resin, some vinyl compounds, carbamate compounds and so on.
The application industry of ultrasonic welding:ultrasonic welders are widely used in electronic appliances, auto parts, plastic toys, cultural articles, handicrafts, cosmetics and other industries.
2. Hot plate welding
The principle of hot plate welding machine: The metal hot plate directly heats the fusion surface of plastic parts to reach a certain melting point, and the hot plate exit, and then apply a certain pressure to two plastic parts to achieve the purpose of fusion.
The application material of hot plate welding machine:Hot plate machine is generally applicable to PE, PP, nylon, ABS and other thermoplastic products.
The application industry of hot plate welding machine: Hot plate machine is widely used in automobile lamp, carburetor, water tank, washing machine balance ring, spray barrel, solar energy inner spray barrel, bumper, vacuum cleaner and other ultrasonic refractory plastic parts and large size special-shaped workpiece welding.
3. Spin welding
The principle of spin welding machine: High speed rotation of the motor makes the plastic workpiece friction and then generate high temperature, which make the plastic workpiece contact surface melt together, Driven by external pressure, the upper and lower workpiece solidify as one.
The application of spin welding machine: Spin welding machine mainly suitable to circular products as blelow:
filter core (household reverse osmosis filter core, industrial filter core, medical filter core, activated carbon filter core…)
plastic cups (double cups, beer mugs, water cups, vases, utensils…)
Garden supplies (sprinkler head, fogger, hose head…)
Ball (hole ball and other practice balls, float balls, toy balls…)
4. High frequency welding
The principle of high frequency welding machine: Produce high frequency electromagnetic field by the electron tube oscillator. The welded sample is placed between the upper and lower electrodes with high frequency electromagnetic field, and the internal molecules are excited and move at high speed to rub against each other and melt, thus achieving the purpose of fusion or embossing under the pressure of the mold.
The application of high frequency welding machine: High frequency welding machine is suitable for: all kinds of PVC based plastic, including shoes, trademarks, stickers, raincoats, rain sails, umbrellas, handbags, handbags, beach bags, stationery, brand name, blowing toys, water bed, car, locomotive cushion, sunshade, car door panel, special hard shell vacuum packaging.
5. Heat staking
The principle of heat staking machine: The heat staking machine adopts electric heating method to transfer heat from the heating plate to the welding surface of the upper and lower plastic parts. Make its surface melt, and then the heating plate exit quickly, the two pieces of upper and lower parts surface fuse and solidify together as a whole. It is driven by pneumatic control.
The application of heat staking machine: Heat staking machine is especially suitable for screw embedding and hot riveting, such as switches, mobile phones, all kinds of electronic products.
Post time: Apr-03-2022