Vacuum Filling Machines

Inside the machine, a feeder in the hopper draws the mass into a double screw or a rotary vane pump. Both are positive-displacement pumps that move a fixed volume for each turn, so the controller can meter every portion precisely. What happens at the outlet depends on what is fitted to it: the same filler can stuff casings, link sausages, form burgers and balls, deposit into cans and trays, or divide dough.

Vacuum fillers sit at the centre of sausage, meat, bakery, pet food, prepared food and alternative-protein lines. Butchers and smaller producers usually run a compact machine with a smaller hopper, while industrial plants use larger fillers that drive complete lines, often through multi-lane attachments that split the flow to several outlets. Some also have an inline grinder, so the mass is ground and portioned in one pass.