Primus Model 643 Vacuum Belt Drive – The model 643 will make side gusseted square bottom bags as well as pillow packs in sizes up to 14 inches (356 mm) wide. It is a rugged and relatively simple machine using a servo motor drive to actuate the sealing jaw movement and pressure.

The Primus 643 is also available as a “stacked” machine for bag in bag packaging of coffee in filter packs and instant cold packs and hot packs.