Food is better protected by good packaging and kept fresh longer which is more sustainable. Ultrasonic sealing technology has become an established and economic alternative of heat sealing.

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For packaging with thermoplastic sealing layers, such as capsules, pouches, drink cartons, cups and trays, ultrasonic sealing provides a large number of options: above all, high cycle rates and tight seals despite potential product residues in the seal area.

Ultrasonic technology fulfills all criteria of process optimization and validation crucial to food packaging companies.

Application Engineering

Successful ultrasonic solutions

Flexible packaging

With ultrasonics it is possible to safely push product residues out of the seal area, which ensures absolutely tight sealing. This significantly reduces the number of leaking packaging and shelf life of the products in the supermarkets is increased. Ultrasonics provides this advantage for stand-up pouches, chained bags and bags, both at longitudinal and transverse joints, in intermittent and continuous applications.

Capsules and tea bags

Sealing of lid films, welding of seal rings and embedding of filters are the most important applications for which ultrasonic welding provides a solution. The weld tools hold the film in place by means of vacuum. Shelf life and product protection are ensured due to the tools being cold.

Spouts, valves and zippers

With ultrasonics, fast and safe welding of injection molded degassing valves or spouts on films of any type is possible. Film shrinkage is prevented and the barrier properties are not jeopardized since ultrasonics only excites the molecules in the actual sealing layer. Moreover, ultrasonics allows for safe integration of zippers for re-sealable pouches and welding of the zipper ends (zipper-crushing).

Cups, blister packs and trays

On PET applications in particular, ultrasonics quickly reaches the high melting point and therefore results in an increase in production output. Sealing and separating blister packs is easily possible, also integration of tear out sections and tamper-evident seals.

Carton packaging

Ultrasonic welding is very well suited for coated carton packaging material. Despite wetting with filled products, tight seals are ensured with or without aluminum barrier. Integration of spouts is easily possible. High output due to short sealing times. Repeatable parameters ensure consistently high sealing quality.


Clean cuts without deforming the product: this is easily possible with ultrasonic. The sonotrode precisely separates the food without leaving any remains on the welding tool. This also prevents any smearing, resulting in a optically perfect result. As a result, you not only increases the quality of your products, but also reduce waste and therefore your costs. 

Sealing through contamination

  • With ultrasonic sealing, packages are sealed 100 % tightly even if there are residues of the contents in the seam area.
  • In the sealing process, the vibrations of the ultrasonics displace these residues reliably from the sealing zone – regardless of whether the contents are solid, moist or liquid.
  • This significantly reduces rejects and at the same time extends the shelf life of the products.


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perfect product

Ultrasonic packaging technology

We work with you to develop customized solutions which correspond to your demands precisely. As experts in our field, we develop applications which make your project a success. Here, we rely on long-standing technology partnerships and the results from over 40 high-tech laboratories around the world.
We offer a premium product portfolio with the highest quality standards – Made in Germany. We stand for top weld results, professional integration and durability of all ultrasonic components and modules for an economical overall solution.
We guarantee reliability, safety and a quick on-site service as part of our concept, and immediate support in over 20 countries. For you, this means quick help when you really need it – at any time and in your local language.
A simple route to more sustainability: not a problem with our efficient ultrasonic technology! The ability to do without joining materials and the low energy consumption mean that your production process will automatically become more sustainable. Reliable bonding will also reduce your rejects and prevent you from generating unnecessary waste.
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