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In almost all branches of industry, parts made of plastic are used, if metal parts have to be embedded in plastic, a secure connection by welding or riveting of thermoplastics is required. It's good to be able to rely on the performance and innovative strength of a specialized partner in this area.


Our employees are our most valuable asset. With an average length of service of 15 years, they have an impressive wealth of experience. In recent years, we have not only celebrated numerous 10-year anniversaries, but also some 50-year anniversaries. Our younger team members are supported by experienced experts, resulting in mutual enrichment.

Only together we achieve our goal!

Product areas

KLN's plastic welding machines offer solutions for virtually all common plastic joining techniques.

The focus is on ultrasonic, vibration, hot plate, infrared and rotation welding. We also offer laser welding and thermal processes such as hot air and hot riveting. We also offer complete system solutions. This ranges from the welding of prototypes to large special systems including robots and feeding technologies.

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We offer customized solutions in the form of environmentally friendly cleaning systems for almost all industrial cleaning tasks.

From high-frequency generators, immersible transducers and transducer plates to table-top and stand-alone units and customized, modular system solutions for aqueous and solvent-based cleaning media. Extensive accessories, such as mechanical oscillation and lifting devices, cleaning agents tailored to your application, automatic transport systems and more, complete the program.

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For almost 75 years, KLN has been using ultrasonic technology for industrial cleaning of a wide variety of parts. Through permanent development at the highest level, a wide range of environmentally friendly cleaning systems is thus available.

Do you have any questions regarding our products or solutions?

For regular enquiries please call us on +49 6252 14 - 0 or write us a message to