Polar Single Chamber Vacuum packing How can vacuuming work? Vacuum signifies ‘with out air’. A vacuum chamber machine eliminates ninety nine.eight% from the air through the chamber and offer. It then seals the packaging airtight. Include oil to the pump until eventually it reaches halfway up the sight glass. https://www.linpack.com/news/top-food-packaging-machine-manufacturers-ensuring-quality-and-efficiency