Welcome to Package This — your guide to packaging machinery and materials. The focus of today’s episode will be liquid filling equipment, the machines that fill up your favorite beverages and foods as well as non-consumable liquids.

Today, we’ll look at the main types of liquid fillers. Choosing the right liquid filler depends on factors including product viscosity, the type of container, the speed of your operation, and other considerations.

Aerosol & Specialty Fillers

Aerosol filling is a unique process used for products like air fresheners, hair spray, deodorant, insecticides, sunscreen, shaving cream, and more. Here we see some various aerosol filling equipment from R.A. Jones in action.

Aerosol filling traditionally consists of several core functions – such as product filling, valve inserting, valve crimping, and propellant filling. Also shown here are popular variations such as bag-on-valve and gasser/shaker filling. The exact process and equipment will depend on the specific product and propellants used as well as production line speed requirements.

With over 2,500 machines installed worldwide and 60 years of proven performance, R.A. Jones offers full aerosol production line expertise. They offer both rotary and linear machine platforms covering the complete speed range spectrum.

Flow Meters

Flow meter fillers, like the 18-head Exacta Ronchi America, dispense product at a consistent rate. While some flow meters come in an inline configuration, this is a rotary flow meter filler.

Product is measured by a flow meter and the valve is opened or closed to maintain the desired flow rate. This type of filler is well-suited for products that have a predictable flow rate, including water or oil. Ronchi’s filler is precise, with a filling accuracy of .2 percent or better.

Ronchi’s filler is easily integrated into new and existing lines and is capable of running at speeds of up to 300 bottles per minute. The Exacta is available with a twelve-week lead time, and Ronchi America provides service support, spare parts, and training out of its Dallas, Georgia, facility.

Net Weight Fillers

Net weight fillers employ load cells – a unit that converts force or weight into an electrical signal – that are placed directly beneath the filler.

Because of their precision, net weight fillers can be a good option for any product that needs to be filled to a precise weight, from pharmaceuticals and cosmetics, or in this case, industrial chemicals.

Here we see Specialty Equipment’s net weight machine filling liquid product into large pails. The machine doses or dispenses liquid product by weight, ensuring that each container is filled with the exact amount of liquid. Specialty Equipment’s machine can fill sixteen, five-gallon open-top pails per minute, or four pails simultaneously. After filling, the machine automatically places the lid onto the pail.

Specialty Equipment can provide this unit with optional pail de-nesting and palletizing features.

Piston Fillers

Piston fillers fill liquids via a cylinder within a tube that moves up and down to draw liquid from the hopper or tank. This piston is then pushed through a nozzle to fill the container.

Piston fillers are highly versatile: they can handle highly viscous foods such as chunky sauces, glue, and cosmetics, as well as for water-thin liquids and juices, making them a great investment.

Gravity fillers

Gravity fillers use the simple law of gravity. In this time-based, fill-by-volume approach to filling, containers are positioned below an overhead chamber filled with liquid. Gravity fillers can be a good choice for water-thin or low viscosity liquids, such as soda and water.

If you are looking for a simple, accurate, and cost-effective way to fill containers with liquids, a gravity filler is a good option.

Pressure Fillers

Pressure fillers use displacement pumps, which are pumps that move a fixed volume of product through the machine on a repeated cycle, to create pressure in the liquid, thereby forcing it into the container.

The amount of pressure and the speed of the pump can be adjusted to control the amount of liquid that is dispensed.

Vacuum Fillers

Vacuum fillers use a rotary valve pump to create a vacuum that sucks product down into a chamber above the container. This type of filler is typically used for medium viscosity products such as jelly, sauces, and gravy.

Vacuum fillers are also used to fill free-flowing, caustic, and foamy non-foods such as cosmetic products like perfumes, nail polish and colognes into glass and other containers.

And there you have it, an overview of the main types of liquid filling technology! We hope you found it fulfilling!

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