At Unified Flex, our Vertical Form Fill Seal (VFFS) machines use reliable sealing technologies designed to produce strong and consistent seals. Depending on the model, sealing jaws may be pneumatically or servo-driven to ensure even heat and pressure during each cycle. Most systems feature digital temperature controllers, which help maintain stable sealing conditions and reduce variation over time.
For specific applications that demand greater precision or compatibility with thinner films, ultrasonic sealing is offered as an optional technology on select models. This method applies controlled vibration rather than heat to bond layers of film, resulting in dependable seals and reduced energy use, particularly when working with recyclable or specialty materials.