Manufacturing systems List of machines (alphabetical, machine classes ascending) https://www.pfaff-industrial.com/en/portfolio/manufacturing-systems https://www.pfaff-industrial.com/@@site-logo/pfaff_industrial_start_229_90p.jpg Manufacturing systems List of machines (alphabetical, machine classes ascending) PFAFF 4504 Ultrasonic or hot-air welding unit Ultrasonic or hot-air welding unit Typical field of application: Filter tubes, supporting shells and pre filters --> Tubes with length seams PFAFF 4507 Hot wedge or hot-air welding unit Hot wedge or hot-air welding unit Typical field of applicationFilter tubes - Tubes with length seams PFAFF 4508 Filter sleeve system featuring hot-air and ultrasonic welding units for liquid filtration Typical field of applicationProcessing filter sleeves with programmable sleeve lengths for the liquid filtration