Polar One Chamber Vacuum packing How does vacuuming get the job done? Vacuum indicates ‘with no air’. A vacuum chamber machine removes 99.8% of your air within the chamber and package deal. It then seals the packaging airtight. Here's the whole guidebook to sauce canning: filling, sealing, and labeling. https://www.linpack.com/news/why-choose-reliable-food-packaging-machine-manufacturers-for-your-business