Custom machine construction using ultrasonic technology

Custom-built machines

mth Ultraschalltechnologie GmbH was founded in 1993 and has since consistently established itself as a specialist provider in the field of ultrasonic welding of plastics.

The company develops and manufactures bespoke special-purpose machines with integrated ultrasonic technology to meet customer specifications, where the highest levels of precision, efficiency and process reliability are required. The focus is on solutions that are precisely tailored to customers’ production processes, enable near-series production and are designed for long-term use.

Core competencies – from development to service in the field of custom machine construction

We support you throughout all phases of your custom machinery manufacturing project involving integrated ultrasound technology:

  • Consultancy and feasibility study
  • Design and prototyping
  • CNC machining and assembly
  • Commissioning and training
  • Service, on-demand maintenance and spare parts supply
  • Everything from a single source – made in Germany.


All key ultrasound components are manufactured in-house at the company’s premises – a crucial factor in ensuring quality, availability and rapid adaptation.

An overview of the devices, control systems and modules

mth Ultrasound Technology specialises in bespoke custom-built machines that cover the entire ultrasonic welding process. We offer the right solution for a wide range of applications – from flexible workstations to complex automation systems. We combine state-of-the-art ultrasonic components with customised fixtures, control systems and modules.

Below, we present the full range of our specialised machinery in detail:

1. Basic types of machinery

Rotary indexing welding machines: mth manufactures rotary indexing welding machines for high-volume production, in which components are efficiently fed to multiple stations via a rotary table. These systems guarantee fast cycle times and consistently high quality.

Long-stroke welding machines: We design long-stroke welding machines for continuous production processes, such as those involving films or strips. They enable seamless, high-speed processes.

Manual workstations / benchtop machines: For small-batch production, prototyping or flexible manufacturing environments, mth offers compact benchtop machines and manual workstations. These solutions are ideal for manual or semi-automatic applications.
In-line welding stations: Our ultrasonic modules can be seamlessly integrated into existing production lines. This makes welding a reliable step within complex manufacturing processes.
Gantry machines: For larger workpieces, we develop gantry machines that enable flexible machining from various positions and deliver precise results.

Multi-head welding machines: When several welds need to be carried out simultaneously, we build multi-head systems with multiple sonotrodes. This enables high volumes to be produced in a short time.

Rotary welding machines: We process components with a circular cross-section, such as filters or pipes, using specialised rotary welding machines. These machines enable tight, uniform joints.

High-speed automatic sealing machines: mth develops automatic sealing machines for packaging and mass-produced goods that are designed to achieve maximum cycle rates whilst ensuring process reliability.

2. Key ultrasound components

Generators: Our ultrasonic generators supply the energy for the welding process. Operating at frequencies between 20 and 40 kHz, they are designed for maximum efficiency and process reliability.
Converters: mth’s converters convert electrical energy into mechanical vibrations – a key technology for reproducible results.
Boosters: Boosters allow us to precisely adjust the amplitude of the oscillations to suit the specific application. This ensures that the optimal welding energy is always achieved.

Sonotrodes: We manufacture each sonotrode precisely to suit the specific application. The shape and material are custom-designed to ensure reliable welding of components.

Clamping systems / anvils: Our clamping systems hold workpieces securely in place during the welding process, ensuring precise, repeatable results.

Workpiece holders / fixtures: Custom-made fixtures from mth ensure that even complex component geometries can be machined with stability and repeatability.

3. Automation & Additional Modules

Rotary tables / linear indexing units: We equip our specialised machines with automated rotary tables or linear indexing units to ensure a smooth flow of materials and increase throughput.
Robotics integration: mth combines ultrasound technology with robotics. This enables the implementation of highly flexible processes – from workpiece handling to welding by the robot arm.
Vision systems: On request, we can integrate optical inspection systems. These systems identify components, inspect weld seams and ensure that every product meets our quality standards.
Force and displacement monitoring systems: By precisely monitoring force and displacement during the welding process, our machines record every cycle and guarantee the highest level of process reliability.
Data logging & interfaces: Our systems are Industry 4.0-compatible. Welding data is documented and production lines are networked via open interfaces such as OPC UA.

4. Control panel construction and safety engineering

In its own switch cabinet workshop, mth manufactures bespoke switchgear using components from leading manufacturers such as Rittal, Siemens, Eaton, Sick and Pilz.

Project planning is carried out using WS-CAD, whilst PLC programming is done using the Siemens TiA Portal. Pneumatic diagrams are drawn up in our design department using Festo, SMC and Aventics components.

Each control cabinet is designed specifically for the particular special-purpose machine – to ensure maximum flexibility, short lead times and the fulfilment of specific requirements, such as those in cleanroom or pharmaceutical environments.

5. PLC programming

We carry out PLC programming using the latest version of the Siemens TiA Portal. In addition, our in-house design department produces the pneumatic diagrams, for which we use tried-and-tested components from Festo, SMS and Aventics.

6. Application-specific solutions with our custom-built machines

Packaging machines with ultrasonic modules: mth develops systems for the packaging industry that enable clean, energy-efficient and completely hygienically sealed welding – ideal for food and hygiene products.

Filter and membrane welding machines: Our bespoke solutions for filters and membranes guarantee maximum leak-tightness and durability, for example in the medical technology or automotive sectors.

Medical and pharmaceutical equipment: For sterile applications such as masks, catheters and syringes, we implement validated processes that meet the highest safety standards.

Textile and non-woven machinery: We offer solutions for welding, cutting and embossing textiles and non-wovens – for example, for protective clothing or technical textiles.
Automotive component machinery: mth is a partner to the automotive industry. Whether it’s dashboards, sensors or lamp housings – we supply specialised machinery that fits perfectly into the production environment.

Micro-precision systems: We develop micro-precision systems for electronics manufacturing and micro-components that reliably weld the finest structures.

Typical applications and industries using mth’s specialised machinery

  • Automotive industry: Special-purpose machinery for precision plastic joining
  • Medical technology: Process reliability and precision for sensitive products
  • Pharmaceutical industry: Cleanroom-compatible design, validatable processes and comprehensive documentation
  • Industry (general): A wide range of sectors meets vertical integration
  • Electrical and consumer goods industry: Fully automated processes for high-volume production
  • Packaging industry: secure sealing – flexible and efficient


One of our strengths lies in specialised niche solutions, which we implement in a particularly cost-effective manner – flexibly, precisely and tailored to individual needs.

Tailored precisely to the specific production environment

mth stands out for its ability to produce bespoke special-purpose machines:

  • tailored precisely to the specific production environment
  • can be integrated directly into existing systems
  • offer near-volume production solutions
  • take up very little space thanks to their compact design.


Independent and modular: By manufacturing all ultrasonic components in-house at its facility, mth remains independent of suppliers and can respond flexibly and promptly. At the same time, the modular design allows for quick adaptation to customer-specific requirements.

Personalized Support: Instead of rigid standard processes, mth focuses on close collaboration, quick decision-making, and development based on partnership. This results in solutions that are not only technically sound but also deliver measurable economic benefits.

An Overview of the Benefits for Our Clients

Customers benefit in many ways when they partner with mth:

  • High process reliability: achieved through thorough material analysis of the plastics and precisely matched machine components.
  • A full range of services: From consulting and manufacturing to spare parts supply—all from a single source.
  • High flexibility: custom-built special-purpose machines with integrated ultrasonic technology that can be seamlessly integrated into existing production lines.
  • Production solutions tailored to series manufacturing: Future series production requirements are taken into account as early as the development phase.
  • High vertical integration: In-house manufactured ultrasonic components ensure the highest quality and rapid availability.
  • Short implementation time: Thanks to a modular design and efficient processes.
  • Compact design: Minimal space requirements with maximum performance.
  • Long-term efficiency: Robust systems that require little maintenance and reliably handle high volumes.
  • Collaborative partnership: A dedicated contact person will guide you through the entire project.
  • Future-proof: Investments in custom-built machines from mth are sustainable in the long term because they can be flexibly adapted to new requirements.


Customer-focused, innovative, collaborative, and committed to the highest quality

mth stands for technological precision, customized solutions, and collaborative partnerships. With expertise ranging from consulting and development to manufacturing, service, and spare parts supply, the company offers everything under one roof.

Because we manufacture all ultrasonic components in-house at our facility and many components are designed with a modular structure, we can produce custom-built special-purpose machines with integrated ultrasonic technology in a relatively short amount of time.

They are precisely tailored to customer requirements, can be easily integrated into existing systems, enable production solutions close to mass production, and, thanks to their compact design, take up minimal space.

Customers receive not just a custom-built machine, but a comprehensive solution that ensures the efficiency, quality, and future-readiness of their production.

Do you have questions?

We are happy to help you personally:

Continue to our ultrasonic components

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Overview page of all ultrasonic products

On the following page you will find an overview of all our product groups – from accessories to the manual welding machine to the custom-made ultrasonic welding machine.

Discover our product range »

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Ultrasonic converterproduct group

We supply ultrasonic converters for the common frequencies 20 kHz, 30 kHz, 35 kHz and 40 kHz. We are happy to manufacture special versions with individual performance data for you on request.

Discover our ultrasonic converters »

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Ultrasonic boosterproduct group

As a manufacturer, we are able to produce customized components for our customers. With our ultrasonic boosters, we supply the component with which the amplitude of the sonotrodes is additionally amplified if the transmission ratio within the sonotrode cannot be made sufficiently large.

Discover our ultrasonic boosters »

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Ultrasonic generatorsproduct group

We produce ultrasonic generators with frequencies from 20 kHz to 40 kHz – suitable for different applications, devices and machines. We produce our generators in three model ranges, from the lightweight version for manual welding guns to generators with an output of up to 2,000 watts with a Profinet interface for installation in control cabinets.

Discover our ultrasonic generators »

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