LOCATION HOME > Solution > Plastic Welding Solutions

Plastic welding

Plastics Welding

　　Plastic ultrasonic welding means that all thermoplastic materials are connected to each other in the weld. Under the action of force and energy, longitudinal vibration and torsion welding are introduced into the plastic at a frequency of 20kHz, 30kHz, 35kHz, 40kHz, 50KHZ, and 4μm to 60μm welding head amplitude energy. The ultrasonic vibration is welded together by the structure of the weldment and the mold. People call these special structures in weldments the conduction angle. The direct contact point between the contour of the joint surface and the thermoplastic component is focused by transmitting the high-frequency energy of the fusible wire, and the deformation occurs in a targeted manner. The friction of the contact surface generates heat and melts the material.

solution

Solution

Spot welding: stack the molded parts that need to be welded flush, no need to prepare welding points in advance, and no lead angle. Pass the tip of the welding head through the upper plate to the lower part and plasticize the plastic in the two parts. The resulting melts gather in the dividing seams and form local point connections there.

Ultrasonic flanging: In metal processing, plastic molds can be flanged. In this way, plastic parts and plastic parts and combinations of different types of materials can be linked. According to different tasks, in order to plasticize and form edges, pins and other fixtures, the welding head needs to form the contour of the product on the workbench.

Riveting: Ultrasonic riveting can quickly and cleanly connect thermoplastics and metal or non-weldable parts. This eliminates the need for additional connecting elements. The heat generated during the riveting process can be quickly discharged through the air-cooled welding head. After the basic riveting process, the system will completely solidify the melt under static pressure within the default holding time. This way avoids the occurrence of rebound and realizes seamless connection.

Torsion welding: The structure of this system is still a conventional vertical type, but its process is completely different. This process is a kind of high frequency friction welding. Vibration proceeds along the tangential direction: the welding head causes the upper part to be horizontally displaced relative to the lower part. Under the combined action of high vibration frequency (20 KHz), amplitude and pressure, mutual friction causes a melt between the two workpieces. This method can also be used to combine different plastics.

Embedded metal parts: threaded joints, threaded pins and other metal parts can be embedded in thermoplastics with ultrasonic waves. According to the size and shape of metal parts, its torsional strength and stability can be achieved. The height difference between the embedding levels allows many welding heads to embed multiple parts in one operation. The lower welding head must be adapted to varying degrees of adjustment.

Carton (beverage): Ultrasonic sealing can effectively meet the packaging and sealing needs of all coated carton materials.

Application field

　　Weld various thermoplastic materials according to the polymer compatibility of products such as PP, PVC, PE, PET, ABS, composite materials, textiles, non-woven fabrics or sheets;
　　ultrasonic plastic welding can be used for all thermoplastics. Care must be taken when slitting workpieces made of partially crystalline plastic. The welding method used for this type of plastic is very different from the welding method used for amorphous plastic. In addition to the mature longitudinal welding process, we can also provide a unique torsional ultrasonic welding solution-SONIQTWIST®, which excels due to its extremely low component load. Ultrasonic sealing provides an excellent prerequisite for processing coated cardboard materials. Among them, ultrasonic sealing also has a unique advantage, that is, the ultrasonic itself will be directly transmitted to the (internal) sealing layer through different sheet structures.

Spot welding the insulating material to the plastic part

Diaphragm welded with non-woven fabric

Flanging the silicone parts

Riveting the metal wire into the plastic housing

Carton seal