At FachPack, Herrmann Ultraschall will be presenting the ZSM zipper sealing module, a modular system for the continuous sealing of zippers in plastic bags - also made from recyclable mono-material. A new type of process control for longitudinal sealing processes will also be on show.
Reclosable packaging - especially made from sustainable packaging materials - is becoming increasingly popular. Herrmann Ultraschall has now developed a module that utilises the advantages of ultrasonic sealing for mono-materials and paper-based materials for stand-up pouches and tubular bags with an integrated zipper. The ZSM zipper sealing module takes up little space, is hygienic and delivers consistent sealing results, even at varying processing speeds.
This is made possible by an optimised combination of ultrasonic generator and the ZSM. The ULTRAPACK generator used is specially designed for high-speed packaging applications and enables reproducible control of the sealing process. This allows the system to be adjusted to new material properties in a matter of seconds.
The Zipper sealing module ZSM enables a continuous sealing process with two sonotrodes arranged opposite each other. The material to be welded is fed between the two sonotrodes and heated and fused by their action. Stopping and restarting is not necessary, but is possible if required. The system can be operated at variable speeds, thus increasing flexibility in production. The process is particularly gentle on the material as the heat is only generated directly in the seal seam and allows the continuous sealing of zippers in sustainable packaging made of mono-material and paper laminates.
Source: Herrmann Ultrasound
