Rotary vane vacuum pumps are the 1st option for vacuum packaging. Dry screw vacuum pumps, vacuum boosters, liquid ring vacuum pumps, claw vacuum pumps and rotary lobe blowers also have particular roles in packaging. Every single of these provides its very own unique benefit according to the distinct software. https://foodpackagingmachinemanuf62660.plpwiki.com/6626143/vacuum_packaging_machine_fundamentals_explained