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Paste filling machines are suitable for filling paste, jellies and jams, especially highly viscous paste. This filler employs a volumetric method to measure and adjust the paste quantity at a time. Therefore, it’s also a piston filling machine. This machine is with a self-priming cylinder where a piston exists and runs. The piston is playing within the cylinder at a moderate speed. The diameter of the piston and the way it runs from head to foot determines filling material quantity and volume. So that volume remains constant and stable every time. The piston moves back and forth and paste will be filled into containers.