Plastic Welding with two different methods

1. Ultrasonic Welding 20, 30, 35 kHz, Linear and Torsional

Welding dissimilar thermoplastic materials according to their polymer compatibility, such as PP, PVC, PE, PET, ABS, composites, tissues, fleece or films. Ultrasonic plastic welding is suitable for virtually all thermoplastics. When planning welds between semi-crystalline plastic work pieces, it is important to remember that the welding behavior of these plastics differs considerably from that of amorphous plastics. The longitudinal and torsional methods produce very different welds. In addition to the proven longitudinal welding processes we offer exclusively offer the torsional ultrasonic welding SONIQTWIST®, which is characterized by minimal component stress.

Ultrasonic sealing meets all the requirements for processing coated carton materials. The special advantage here is that the ultrasonic energy is directly transferred through the most diverse laminate constructions to the (inner) sealing layer. SONIQTWIST® is the new ultrasonic sealing technology for e. g. containers and cans. The Torsional-method developed and patented by us redefines ultrasonic sealing and welding.

process description Ultrasonic Welding

2. Vibration Welding 95-260 Hz, Linear Welding

Vibration welding is ideal for joining large parts, hard-to-reach areas, multi-level objects, and curved surfaces. The process is used in the automotive industry for joining large components with different shapes.

Weldable plastics are semi-crystalline, non-reinforced or reinforced materials, polyamides, including those containing glass fiber and other reinforcing components, polyethylene that is non-reinforced or with proportionate reinforcing components. Production of molded parts from ABS, SAN, PC, PMMA, PBT and blends, such as PP/EPDM, PC + PBT, PPE and PA. The vibration welding technology is therefore suitable for almost every material, except for strongly elastomer-modified materials. 

Description of the vibration welding procedure

more details on Vibration Welding

Areas of Application:


Spotwelding, rivet and crimping connections on e.g. inside linings, instrument panels, seats and bumpers

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Torsional Welding

This method is a type of high-frequency friction welding. The vibrations are applied tangentially.

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Boxes (for beverages)

Ultrasonic sealing meets all the requirements for processing coated carton materials.

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As in metal working, moulded parts made of plastic can also be flanged.

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Embedding of Metal Parts

Threaded inserts, grub screws orother metal parts can be ultrasonically embedded in thermoplastics.

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Cups, bowls, trays and blisters

The opening behaviour of packagings plays an increasingly important role in the customer’s product acceptance.

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The function of the energy director is to initiate rapidly plastisation of the joining surface by the concentration of energy.

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Ultrasonic spotwelding is used predominantly where for instance flat mouldings without weld preparation (ED) have to be welded.

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Pouches with addtl. Functions

Great variety of additional possibilities to realize special features on pouches: spouts, valves, header, etc.

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