A liquid filling machine fills bottles, jars and containers with liquid products such as beverages, chemicals, cosmetics, pharmaceuticals, and food. These machines dispense a precise amount of liquid into each container, which ensures consistent product quality and reduces waste.

Filling machines are available in fully automatic models, as well as semi-automatic and manual.

Automatic Liquid Filling Machines

Automatic liquid filling machines operate quickly without constant human intervention. With the help of sensors and controls, this type of filler is able to detect empty containers and dispense precise amounts of liquid into them.

Automatic liquid filling machines are recommended for companies that require both fast and accurate fills for a wide range of liquid and molten products. They’re ideal for production lines where efficiency and throughput are critical to meeting production targets and maintaining product quality.

Semi-Automatic Liquid Filling Machines

Semi-automatic liquid filling machines require some manual intervention during the filling process. An operator manually places containers in position for filling, then initiates and stops the filing process with the help of digital controls and removes the containers once the filling process is completed.

They’re typically less expensive than automatic filling machines, making them a popular choice for companies with moderate or smaller production volumes. Semi-automatic liquid filling machines come in various configurations, including benchtop models and standalone units, and can handle different types of liquids with varying viscosities and product considerations.

Manual Liquid Fill Machines

Manual liquid fill machines require an operator to manually fill containers with low-viscosity products, such as oils, syrups, or solutions. These machines are designed for small-scale production or laboratory settings with low production volume.

They’re less expensive compared to automatic filling machines, but they’re also slower and less precise, which can lead to inconsistencies in product quality and quantity.

Choosing the right liquid filling system depends on the product you’re dispensing, how quickly you need to dispense it, and how accurate you need to be during the dispensing process.

Net Weight

Net weight filling machines dispense a precise amount of liquid into containers based on weight.

Here are just a few benefits of net-weight liquid-filling machines:

• Highly accurate
• Reduces overfills and underfills
• Minimizes waste and saves on raw materials
• Suitable for high-volume production lines
• Compatible with a variety of container shapes and sizes
• Works with products of varying densities or viscosities
• Recommended for industries where regulatory compliance is important, such as food and beverage, pharmaceuticals, and chemicals

There are different types of net weight fillers—rotary, and in-line, and mass-flow.

Rotary filling machines use a rotating turntable or carousel to move containers through the filling process and fill multiple containers simultaneously with continuous movement, weighing the containers as they are filled. In-line fillers stage containers on scales, stop the containers, fill them to weight, then advance them out to the stage of the process. Mass flow meter filling involves metering liquid to each nozzle as it fills a container with high-viscosity or foamy liquids, stopping when it reaches the desired mass.

Volumetric

Volumetric filling machines dispense a precise volume of liquid into containers based on volume.

Here are just a few benefits of volumetric filling machines:

• Highly accurate
• Reduces overfills and underfills
• Minimizes waste and saves on raw materials
• Suitable for high-volume production lines
• Compatible with a variety of container shapes and sizes
• Works with low- to medium-viscosity liquids, such as oil, juice or soap
• More cost-effective than net weight

Volumetric filling machines may use pumps, a combination of pistons and pumps or fluid dynamics to dispense products.

Overflow filling machines use a unique method to achieve accurate volume measurements by filling the containers to a specific level, and then any excess product is displaced back into the supply tank through an overflow outlet. The level of the liquid inside the container is determined by the size of the container and the speed at which the product is dispensed. This type of volumetric filling machine is ideal for non-viscous, foamy or frothy liquids.

Gravity

Gravity filling machines use gravity to fill containers.

Here are just a few benefits of gravity filling machines:

• Suitable for small- to medium-sized production lines
• Compatible with a variety of container shapes and sizes
• Works with low-viscosity liquids, such as water, milk, juice and other non-carbonated beverages
• Most cost-effective option

RMH offers a wide range of configurations for liquid fill machines, including:

• Liquid pouch filling machines—fills and seals flexible pouches with food, beverages, pharmaceuticals, or cosmetics.
• Corrosive and chemical liquid filling machines—fills drums, plastic jugs or bottles with chemicals used in agriculture, cleaning or other industries.
• Hot liquid filling machines—fills glass jars, plastic bottles or metal cans with sauces, syrups, or other viscous liquids that require heating during the filling process.
• Molten filling machines—fills products such as wax or chocolate that are a liquid at high temperatures.
• Aseptic bottle filling machines—fills and packages containers in a sterile environment to prevent microbial contamination.
• Hot fill bottling machines—fills juice, tea and other beverages into hot bottles, which then cool and create a vacuum seal to prevent contamination.
• Oil bottle filling machines—fills bottles with oil-based products, such as cooking oils, lubricants and essential oils.
• Cosmetic bottle filling machines—fills bottles, jars and tubes with liquid and semi-liquid cosmetic products, such as lotions, shampoo, perfume and creams.

In addition to bottles, liquid packaging machines can be used with a variety of containers, including:

• Jars
• Vials
• Pouches
• Tubes
• Bag-in-Box
• Ampoules
• Cans
• Cartridges
• Cups

We understand no two businesses are the same, so ask our engineers how we can design a custom solution that fits your needs.

This is just a sample of the industries we’ve partnered with for liquid fill projects. Don’t see yours listed?

Contact us for more information >

RMH is a trusted partner for manufacturers, producers and companies of all sizes across the United States. Learn more about the liquid fill and end-of-line packaging projects that we’ve completed.

Projects

• Bottle descrambler
  • Eliminates labor-intensive process of placing empty bottles on a line
• Liquid filling machine
• Bottle capper machine
  • Accurately and securely places lids, snaps or caps on containers or bottles
• Induction sealing machine
  • Creates an airtight foil seal on containers or bottles
• Automatic labeling machine
  • Improves the labeling process by ensuring uniformity, precision and speed
• Case packer machine
  • Boosts productivity by packing products more quickly and efficiently