The Vacuum Liquid Filling Machine can perform the fill operation in two ways.
If the container is rigid, a Vacuum Induced Filling Process is more appropriate since it will not collapse when performing as part of the vacuum system. In this type, the bottle opening is sealed air-tight by the nozzle assembly which simultaneously opens the vacuum port of the nozzle. The filling liquid is then induced into the bottle due to the vacuum. After the appropriate filling time and level has been reached, the nozzle assembly is automatically raised.
If the container is collapsible which is typical of thin-walled PET bottles, then a Positive and Vacuum Pressure Filling Process is appropriate. The difference of this process is that the filling liquid is pumped into the bottle and not filled through the suctioning of a vacuum. The vacuum cannot be used because the bottle will collapse as air is suctioned out from it. The vacuum operation only begins when the bottles are already filled with the product with the purpose of returning the excess product back to the source tank.
This machine can be supplied with 12 to 20 filling nozzles based on the customer’s output requirement and container specifications.