Welding packaging

Welding is becoming increasingly important in the packaging industry as well. Flexible (e.g. films) or firm (e.g. drinks cartons) packaging types can be joined in this way. Ultrasonic sealing is a special kind of welding. The heat is generated only inside of the materials to be welded. This means that the contents of the packaging are only exposed to a very minimal thermal load. Anvils also focus the energy and ensure slim and tight seals. This saves energy and packaging material, and is therefore more environmentally friendly than other sealing methods.

FOOD

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 sealing

Visually appealing, long shelf life and 100% tight – this is what the ultrasonic sealing of packaging can achieve.

application engineering

Ultrasonic sealing is suitable for various applications

Cardboard packaging with thermoplastic coating

Valves-and-vents-on-films-filter-materials — Screw caps on coated cardboard packaging/films

Especially suited to welding films

Film packaging in particular benefits from ultrasonic sealing. Here, product residues in the weld seal area are displaced. 100% tight seams are the result. The low thermal load means that the film does not shrink – this is important for a good product appearance.

Film

Ultrasonic welding of film is an efficient process for joining films and is particularly common in the packaging industry.

Perfect product

Ultrasonic sealing technology for packaging technology

Tight packaging with high process speeds, even with contaminated seal areas – that’s what the sealing technology from Herrmann stands for. After the packaging machine has been switched on, the ultrasonic tools are immediately ready for use. Short sealing times and cold tools allow the packaging material and product to be handled with a particularly high level of care. Herrmann offers ultrasonic solutions for many different forms of packaging and applications that can be integrated quickly and easily into new and existing packaging systems.

TSM Top seal modules

The focus is on the intermittent sealing of top seals, of stand-up pouches, for example. The TSM is used for the packing of liquid, powder or paste feed materials. The ultrasonic vibration results in a reliable joint quality, also with product residues in the seal area.

LSM Longitudinal seal modules

The LSM Fin longitudinal seal module stands for high quality, continuously manufactured sealing lines on bags (horizontal and vertical) and on chained bags. Easily exchangeable sealing tools allow for an individual and material-saving seal design.

VSM Valve seal modules

The vent applicator from Herrmann Ultraschall is a compact module which is used for the sealing of aroma protection and degassing vents in an exceptional variety of packaging machines.

Components