SONOTRONIC GmbH

SONOTRONIC GmbH. Linked with success.

With innovative strength and quality awareness, SONOTRONIC develop and produce special machines, standard machines, assemblies and components for the processing of plastics. Our experience in joining plastics makes us your specialist for ultrasonic welding, but also punching, riveting, embossing and cutting with ultrasonic – and this since 1974. Alternatively and also as a hybrid solution, the processes hot plate, infrared or hot air are used.

Specialist in the construction of special machines for ultrasonic welding

We are market leader in mechanical engineering for special machines in the automotive industry. Our machines are used worldwide for joining and punching plastic parts in automotive exteriors and interiors at well-known OEMs. We realize concepts for one-man operation up to automated production lines. In addition, we develop and produce for all plastic processing industries, the packaging industry, the food industry, for the textile industry and the environmental industry.

News

03/30/2026

TV-Premiere: GreenTech aus Karlsbad – SONOTRONIC bei „Welt der Wunder“

GreenTech made in Germany: wie SONOTRONIC mit Ultraschall die Industrie nachhaltiger macht. Ob sichere Verpackungen, hochpräzise Automotive-Bauteile oder nahtlose Funktionskleidung – Ultraschalltechnologie ist längst Teil unseres Alltags, ohne dass wir es bewusst wahrnehmen. Die neue Dokumentation auf Welt der Wunder TV zeigt, wie die SONOTRONIC GmbH diese Technologie „Made in Germany“ entwickelt und damit industrielle Prozesse nachhaltiger gestaltet. Welt der Wunder Dokumentation: Ausstrahlung am 31.03.2026 um 20:00 Uhr

01/07/2026

Change in management at SONOTRONIC GmbH as of 01 January 2026

Experience, continuity and international orientation. SONOTRONIC GmbH, a specialist in ultrasonic technology for standard and special-purpose machinery based in Karlsbad, has restructured its management as of 1 January 2026. Marc Hägele, a long-standing sales and technology expert within the company, and Yongwu Chen, who brings extensive international management experience, have jointly assumed responsibility for the strategic development of the company.

11/18/2025

Neighbors become partners – Ultrasonic meets 3D-Printing

Only a few streets separate the two high-tech companies in the Karlsbad-Ittersbach industrial area – now they share more than just physical proximity: SONOTRONIC, a specialist in ultrasonic technology, and PartsToGo GmbH, a certified dealer and service provider for industrial 3D printing solutions, are entering into a strategic partnership.

Our industry solutions

Automotive exteriors

For automotive manufacturers and suppliers, we design and produce equipment for the processing of particularly high-quality plastics, such as those frequently found in the automotive industry. Did you know that? The best result when placing and welding holders for sensors in the inside of painted bumpers is achieved with ultrasonic. The paint is not damaged in the process. Click here for more info!

Automotive Exterieur Ultraschall Bearbeitung, Schweißen, Nieten, Stanzen, Kunststoffe Stoßfänger, Scheinwerfer, Spoiler, Radlaufverkleidung, Türseitenverkleidung, Unterbodenverkleidung

Automotive interiors

With our machines and automated production lines, almost all series of automotive interior equipment can be produced. Combined with tool change concepts, parts with similar shapes can be produced cost-effectively. Our production lines with robots and linear conveyor systems are particularly economical, as various processing steps are realized in one cycle. Click here for more information!

Höchste Schweißqualität für Automobil-Interieur: Verkleidungen, Mittelkonsole, Zierblenden, Filter, Leuchten, Instrumente, Akustikabsorber, Hochtoener, Lautsprecher, Gepaecknetze, Instrumententafel

Plastics

Wherever injection molded parts and extruded plastic parts are used, the innovative ultrasonic technology, also combined with our alternative joining techniques, offers absolute process reliability. To ensure that the requirements for tightness and strength can be met in the series production process, we focus our attention on the design of the parts as well as the design of the joining zone. Click here for more info!

Packaging & Food

The high demands in the packaging industry must also be met in the joining and cutting technology: convenience, sustainability, flexibility, but also efficiency and cost savings. Our systems and solutions for sealing, cutting and punching different types of packaging are based on highly developed ultrasonic technology. Click here for more info!

Blister, Beutel, Tuben, Flachbeutel, Getraenkekarton, Standbodenbeutel, Schlauchbeutel, Lebensmittel Ultraschall schneiden, Trennschweißen, Medikamente, Hygieneartikel, elektronische Konsumgüter

Technical Textiles

Our technologies for welding, roll seam welding, cutting, punching and embossing textile materials with ultrasonic have already established themselves on the market. Our customers include manufacturers and users of technical fibers and textiles, e.g. the nonwovens industry, vehicle construction, technical textile manufacture, mechanical engineering and many others. Click here for more information!

Ultraschall-Maschinen, -Systemen und -Komponenten für Prozesse und Anwendungen in der Textilindustrie.

Environmental

For the environmental sector, SONOTRONIC develops and manufactures high-performance ultrasonic systems for water and environmental technology to optimize the efficiency of sewage treatment and biogas plants as well as industrial applications. In addition, we offer preliminary tests and feasibility studies in this field. Click here for more information!

Innovative Hochleistungs-Ultraschallsysteme für die Wasser- und Umwelttechnik