Welding incompatible plastics

Henkel Adhesive Technologies has developed a novel technique for welding incompatible plastics with welding machines available on the market.

As the leading solution provider for adhesives, sealants and functional coatings worldwide, Henkel is constantly developing sustainable innovations and leading technologies that offer more value for our customers and drive profitable growth. The development of a novel technology for welding incompatible plastics enables our customers from various plastics processing industries to create a variety of new plastic combinations with our tailor-made product solutions. As a result, customers can use market-based welding techniques on a much larger scale while simultaneously benefiting from a shorter process time and many more advantages of this established joining technology. This new technology can also be applied to the welding of compatible plastics and contributes to the optimization of processes and quality.

Plastic Welding

The application of the new Henkel technology enables the welding of incompatible plastics and there is no need for any special pretreatment. Subsequently, the component can either be welded immediately or at a later time with the customary welding processes. 

The new technology enables welding with common joining techniques such as ultrasonic welding. This technology also contributes to the improvement of current compatible plastic combinations.


Henkel has longstanding experience in the areas of developing dosing systems and automation. We also use this expertise for our application in the area of plastic welding.


Henkel is constantly working on the expansion of the compatibilizer portfolio in order to further enhance the range of plastic combinations.


Henkel applies all common welding techniques and as a result, the further advancement of the product development is customized and in line with market requirements. 

Our expert teams constantly work on the improvement and expansion of the new technology of joining thermoplastic polymers. In collaboration with our customers Henkel optimizes this technology for various applications.

The technological foundation for welding incompatible plastics generates efficient product innovations for various materials. A wide-ranging portfolio of innovative compatibilizers meet the multilateral needs of materials and components. The application of bonding agents, that make the welding of incompatible plastics possible, are done by a special dosing technique. As the products do not have any surface adhesion at all, after application the coated components can immediately be welded or even easily transported as well as joined with market-based techniques without any time constraints.

“Welding of incompatible plastics” – a new technology from Henkel

In the process of welding plastics, various joining techniques such as hot plate welding, ultrasonic welding, vibration welding, infrared welding or laser welding are applied. Until now, these welding techniques were only applicable to plastics that were compatible. With the novel technology and in close collaboration with customers from the plastics processing industry, many incompatible plastics such as polypropylene (PP) with acryl butadiene styrene (ABS), polyamide (PA), polycarbonate (PC) or polymethamethacrylate (PMMA) can be welded.
The technology offers high potentials for improving processes and production methods, in particular within the automotive industry, the medical industry or for home appliances.

Henkel is already working with lead customers from various industries on launching the first marketable applications of this new technology.