The term “liquid filling machine” covers a wide range of machines that vary in their applications. As often happens when it comes to machinery, explanations can be overly complicated and use confusing jargon. This is why the team here at KBW Packaging has broken down how a liquid filling machine works for everyone to understand.

What are they used for?

Liquid filling machines are often used in the cosmetics and pharmaceutical industries for lotions, perfumes, bath oils, handwashes, medicines and so on. They can also be used for hand sanitiser, detergent, disinfectant, bleach and other household or industrial products. The manufacture of food products such as mayonnaise, salad dressing, fruit juices and cordials also routinely involves the use of liquid filling machines.

What is a liquid filling machine?

A liquid filling machine is a piece of equipment that can fill containers with liquids of various viscosities.  Our choice here at KBW Packaging ranges from automatic liquid filling machines or semi-automatic liquid filling machines, with multiple options for numbers of heads. 

These machines can be programmed with the necessary settings for your operation to maximise efficiency and production output rates. 

How do liquid filling machines work?

Liquid filling machines can be split into various categories, including level filling machines, weight filling machines and volumetric filling machines.

Level filling machines work by using vacuum, pressure or gravity. A level is pre-determined and set on the machine, and then the mechanism fills containers or bottles to this level. 

A vacuum might be used to initiate the flow of liquid or powdered products at low or medium speed, such as wine or milk powder. Pressure, on the other hand, is more suitable for medium and high speeds and carbonated liquids. Gravity is the more traditional way to fill non-carbonated drinks and can be used at all levels of speed. 

Weight filling machines work by setting a required weight, so that the machines can fill a set weight into the containers. This is used for anything from huge drums of industrial chemicals, to jars of instant coffee. 

Volumetric filling machines, meanwhile, work on the basis of volume. More specifically, a flow meter is used to measure the amount of liquid that goes into the containers. 

In general, our liquid filling machines are operated using a user-friendly control panel, which controls the flow rate of the product. Nozzles can then be mechanically adjusted to set the fill level for the filling operation. Empty bottles are subsequently placed underneath the nozzles, with the liquid filling then taking place based on one of the methods mentioned above. 

How do I know which machine I need?

Now that you know the basics of how a liquid filling machine works, why not begin browsing our range of liquid filling machines to see whether we stock the right machine for your desired application?

As a UK Packaging Machine Manufacturer, the range we have is as wide as it is high in standard. If you are unsure which liquid filling machine would best suit your requirements, we are always happy to help. We have compiled a list of frequently asked questions on liquid filling machines, or you can get in touch with us directly.