What Kind of Liquid Filling Machines You Must Know

Ever wonder how all your juice bottles, shampoo bottles and ketchup bottles are filled? Well, liquid filling machines do it!

Today we are going to talk about liquid fillers, and all the various liquids manufacturers stuff to contain all types of fun liquids. When you know how these machines work, you’ll know how your drink, sauce, soap and the rest get condensed into a glob. Let’s dive in!

What Is A Liquid Filling Machine?

A liquid filling machine is just that! It’s the part that adds liquids to bottles, jars, jugs, and so on.

Liquids are everywhere. Some are heavy and runny, such as honey, ketchup, shampoo and lotion. Others are thin and watery, such as soda, water, juice. Regardless of the thickness, liquid filling machines are made to handle them all!

The machines fill loads of boxes very fast and precisely. They are mostly there to push liquids into bottles in sufficient amounts. Pretty neat, right?

Varieties of Liquid Fillers based on Automation Cost

There is a way to group liquid filling machines by their automation. Others require an operator to run them. Other can do most things themselves with very little human interference!

There are three levels of automation:
Manual Liquid Filling Machines

These are the basic liquid fillers. They’re not powered by electricity, or have machine parts. A human has to be in charge and run the filling operation from beginning to end.

It’s very easy to fill by hand using filling machines. Just dial in the filling volume by moving a screw dial. And pull a lever to fill each bottle one by one. Only one container can they fill at a time.

Manual fillers are also a great cheap option for extremely small companies that produce a little. But filling speed is all up to the person who fills it. It can be slower than the machines.

Semi-Automatic Liquid Filling Machines

Then there are semi-automatic liquid filling machines. These are electricity-powered, and they come with a bit of filling automation built in. But someone still has to activate the machine and supervise filling.

Semi-automatic fillers pump/sparkle the bottles and tins to get it full quicker than the manual fillers. Many have two settings – manual and auto. Auto-filling: The filling is done by holding down a foot pedal switch. Super easy!

These fillers are great for low to medium volume production. They are more accurate and filling faster than regular manual fillers.

Fully Automatic Liquid Fillers

The final are complete-automatic liquid filling systems. These premium fillers don’t require any human help at all. They can be used for very small production runs or very large runs at extremely high filling rates.There are essentially two primary types of 100% automatic fillers:

• Inline Fillers: Fill bottles in an even line. Bottles pass through the filling station and the cap-stapling station on a conveyor belt.
• Monobloc fillers: These are machines that do a number of packing operations together, like filling, capping, labeling, etc. They work at light speed.

Large manufacturers who make massive amounts of liquids use full automatic fillers. They’re lightning-fast and need little human supervision.

Types of Fillers based on Filling Process

Another way to group liquid filling machines is by the method of filling. Both ways of carrying fluids from the tank to the waiting bottles or containers have their own way.

Gravity Filling

Gravity filling machines are gravity filled equipment that lifts fluid from a top tank into the bottles. A filling volume is managed by regulating the period of time when a valve remains open. It’s used for water, juices, soda, etc.

Piston Filling

Piston fillers have a mechanical piston that pumps and regulates how much liquid is pumped into each bottle. This is ideal for creamy liquids such as creams, gels, sauces and pastes.

Pump Filling

Pump filling machines pump fluids from a tank to containers. Examples of pumps are: Peristaltic pumps, Rotary pumps, Diaphragm pumps and so on. They let precise volumes be continuously pumped. We do it for shampoos, lotions, oils and liquid soaps.

Overflow Filling

Overflow filling machines fill every bottle at the same level from extra fluid. The filling nozzles get into each bottle and press down on the opening. After the default liquid level is reached, excess liquid overflows into the tank. It is usually for drinks, juices, and other drinks with very stable fill rates.

Vacuum Filling

Vacuum fillers vacuum suction on the bottle or a canister that’s being filled. This vacuum pulls the liquid into the bottle as quickly as it’s pumped out of the tank. It seals tough, sticky or delicate items softly and cleanly. Jams, preserves, thick sauces use vacuum fillers.

Net Weight Filling

Net weight fillers fill containers by weight, not volume or level. They’re outfitted with super sensitive scales to monitor weight at filling point for accurate and consistent fills corresponding to desired product weight. It is most common for foods, chemicals, therapeutic solutions, and other products in which volume counts more than weight.

Comparison of Liquid Filling Machines

Here’s a quick comparison chart that shows some of the most prominent characteristics and differences between the main liquid fillers:

Final Thoughts

All you have to do is decide which one will fit your production size, liquid density, precision needs, filling rate and budget. It will get your fluids bottled up correctly and effectively!

So I hope you found this article informative as to how your juice pouches, shampoo bottles, ketchup containers, and much more are filled up by these cool liquid fillers!

FAQs

What are the main parts of a liquid filling machine?

The components of a liquid filler are:

• Tank/reservoir – Contain liquid product during filling. Could be a giant tank, airy drum, etc.
• Feed system– Pumps liquid from tank to filling nozzles. Uses gravity, pumps, pistons, etc.
• Filling nozzles– Fine gap where liquid comes in to bottles.
• Metering system– Controls and readouts the volume released by nozzles. Works with valves, flow meters, scales etc.
• Bottle work – Assembles bottles, puts them in the bottle position, etc. Uses conveyors, guides, rotary tables.
• Capping– Apply cap/closure on filled bottles. Could be a separate unit.
• Control panel– Operates operator can supervise, set, and adjust filling process. : Manual, semi or automatic.

How are foamy liquids filled accurately?

Foamy Shampoos, Lotions etc. can be hard to fill correctly. Foaming is controlled by specific nozzles and tank designs.

Nozzles sometimes reach the bottom of bottles to spill under the cap which decreases air consumption and foaming. In tanks there are special foam suppression systems. Even vacuum and net weight filling that fills slowly and slowly reduces foaming.

What are the safety measures with liquid fillers?

Liquid fillers are safety packed with emergency stop buttons, safety interlocked guards, leak detection, overflow prevention, etc.

Advanced fillers, such as sensors, catch problems before they get started and stop filling so that accidents and spills do not happen. It also needs the proper warnings, procedures and PPE.

When are filling machines cleaned and sterilized?

Clean and sterilize properly between batches of products. Machines have CIP (Clean-in-Place) systems to flush, rinse and clean the internal surfaces.

Tanks, pipes, nozzles are made for easy draining and opening. Fillers that are automatically clean themselves, with only soap and hot water. Still requires manual cleaning in the difficult to access spots.

Is the same filler applicable to different liquids?

It depends. With some swap over, the same filler can sometimes be used for multiple liquid viscosities, container/sizes, and production amounts.

But for big liquid-property changes, such as from creamy cream to soda, would demand big machine modifications or a new filler. One machine per product is ideal to make the most of it.

Recommend Readings:

• What is Liquid Filling Machine?. (2024, Oct 29). Tamceki. https://www.tamceki.com/en/what-is-liquid-filling-machine/
• How does a liquid filling machine work?.(2024,SEP 11). Asset Packaging Machines. https://assetpackaging.com.au/articles/how-does-a-liquid-filling-machine-work/