Milk Filling Machine

Your Ultimate Guide to Understanding Milk Filling Machine

A milk filling machine plays an important role in the modern dairy processing industry. How does it work? What does a filling machine compose of? How does it ensure safety? What are its different types? What are its benefits and features? What are the factors that you should consider before buying these machines? All these questions and other great information about milk filling machines will be answered in this article. So, keep reading and learn more!

What is a Milk Filling Machine?

This equipment is used to package milk and other dairy products into different containers. It includes flavored milk, raw milk, lassi, milkshakes, and more.

Using an automatic filling machine helps in dosing and filling of milk-based liquid becomes easy. Usually, these machines are specifically designed to meet the diverse and increasing requirements of the milk industry.

Milk filling machines are made from certified materials such as stainless steel 304 to ensure the quality and safety of the final product.

What is a Milk Filling Machine


Milk filling machines are widely used by different industries including:

Food Industry. These machines are widely used in the food industry for packaging both powdered and liquid milk products.

Dairy Industry. This industry is a sub-type of food industry that uses milk filling machine to dispense yogurt, fresh creams, and flavored milks into different containers.

Pharmaceutical Industry. Pharmaceutical industry also uses milk filling machine for packaging milks with calcium, vitamins, and other contents needed for body health.

Safety Measures

The containers such as bottles are placed on the machine’s conveyor system. Then, these containers are transferred into the filling chamber where the nozzles fill them up. The filling operation is regulated and time to ensure less milk wastage.

The safety measures included in a milk filling machine is its sensor. With this sensor, these machines can detect irregularities. The machine will automatically stop its operation when it senses any irregularity.

Safety Measures

Working Principle of a Milk Filling Machine

Working Principle
Working Principle

Although it has a complex structure, a milk filling machine operates in a simple manner. Below are the common ways a milk filler works:

  1. Before the operation, the machine’s hoppers and containers are cleaned thoroughly. This step helps in preventing contamination.
  2. After the containers such as jars, cans, and bottles are cleaned, they are manually put on the machine’s conveyor. The conveyor will transfer them under the filling nozzle.
  3. Once the machine detected the containers using its sensors, the machine will automatically start the milk outflow process.
  4. Then, the filling nozzle valves will open and allows milk continuous flow.
  5. If the bottles are all filled will milk products, the machine will automatically stops the flow.
  6. After accurately filling all the containers, they are transferred by the machine for further processing such as capping, labeling, or coding.
  7. The conveyor will move all the finished products to the end processing.

Different Types of Milk Filling Machine


These machines are capable of filling each container with a precise milk volume. Therefore, assuring that every container has a uniform amount of product.


Overflow filling machines fill each container with the same amount of milk. This machine ensures a consistent filling on each container.


Gravity milk fillers have feed system on its top where the milk product is placed before the operation. The milk product will be dispensed to the container downward using a gravitation pull.


This machine is widely used for filling containers with yogurt or cream. It works by using a certain force to push the product into the container.

Fully Automatic
Fully Automatic

These types of milk-filling machines have fully automated processes. It doesn’t involve any human operators. The machine will work all the processes from picking containers, and filling, to final packaging. Fully automatic milk-filling machines are ideal for high-volume production.


Milk filling machine with semi-automatic function involves human-machine interface. The human operator will place the milk into the machine and will pick the final product after the process. The center process such as filling is performed by the machine.

Weight Milk Filling Machine

These machines are primarily used for filling containers with milk in accurate manner without tolerance. It is capable of weighing the milk product and increase or decrease the amount based on set level. Weight milk filling machine is widely used for filling high-level containers.

Rotary Milk Filling Machine

Milk filling machine with rotary function is designed with rotational turret or carousel to move the containers. The machine dispenses a specific milk product volume to the container  when the rotation cycle passes through the filling nozzle.

Pneumatic Milk Filling Machine

This type of milk filling machine fills the container with milk using air pressure rather than electric signals. It dispenses milk products to the containers while moving the shaft cylinder backward and forward.

Main Components of a Milk Filling Machine

Monitoring System

A milk filling machine is integrated with an intelligent monitoring system. It helps the operator to see all the machine’s operation stages. This is where you can set the machine’s filling parameters including:

  • Conveyor speed
  • Volume
  • Pressure

It will also display the machine’s unusual activities, irregularities, and abnormalities. This will also display the machine’s affected area.

Feeding Hopper
Feeding Hopper

This is where the milks to packaged are filled into the machine. It can carry all kinds of milks such as:

  • Pasteurized
  • Raw
  • Flavored or mixed

Smaller filling machine also has a smaller feeding hopper system.


Sensors are commonly built-in in a milk filling machine as a main security feature. These sensors are capable of identifying containers and bottles in the conveyor system. It also identifies whether the containers are placed properly and aligned with the filling nozzle. Once the sensors confirm the containers, the machine will allow the filling nozzle to dispense the milk from the feeding hopper.

Filling Head
Filling Head

This is where the milk is dispensed into bottles carried by the conveyors. The filling heads of a milk filling machine is commonly constructed using stainless steel materials. Thus, it is resistant against corrosion and rusting. Filling heads are removable for cleaning and maintenance. It is designed with a variety of sizes depending on the bottle or container.

Mechanical Drive
Mechanical Drive System

This system controls the movement of the machine’s parts and components to ensure proper functioning. It also helps in smooth operation during the filling process. The mechanical drive system includes:

  • Motors
  • Actuators
  • Gears

All the milk packaging such as bottles, cans, or jars are placed on the machine’s conveyor system. The conveyor will move all the containers to the filling chamber. An efficient conveyor system of a filling machine can contribute to the synchronization of all the systems. This system also includes offloading and loading of the finished products.

Control System
Control System

The control system is responsible for the efficient operation of the milk filling machine. It can be found at the back or front of the machine. This is where the energy switch is located. The control system carries the following:

  • Relays
  • Circuits
  • Programmable controllers

Ideal for Filling Milk into Different Containers

Benefits of Milk Filling Machines to Milk Producers

Maintains product integrity. These machines are capable of handling milk in a controlled and gentle manner. This helps in eliminating agitation. Thus, preserving the milk integrity. It means that the milk’s nutritional value, flavor, and freshness are maintained for the consumers.

Improving the milk’s shelf life. Most milk filling machines uses vacuum sealing or nitrogen flushing. These features allow the milk to extend its shelf life.

Branding. These machines are mostly customizable. It allows businesses to have an outstanding brand identities and packaging design. Customization options of milk filling machines include promotional materials, printing batch codes, and labeling. It can also be used for creating innovative packaging formats.

Hygienic filling. Since milk filling machines are easy to clean, rest assured that milk products are free from contamination.

Consistent filling. These machines are integrated with pneumatic and photo sensors to ensure that the containers are filled with milk in an accurate amount. Thus, ensuring consistent filling throughout the process.

Increased productivity. Whether you are dealing with bulk quantity milk production, milk filling machines can be a great help to increase your production efficiency. These machines can fill large batches of containers while maintaining accuracy.

Saves energy and time. Using a milk filling machine can help eliminate the need for manpower. This ensures a significant time saving. These machines also minimize the use of utilities during the filling process, therefore, ensuring a less power consumption.

Milk Filling Machine

Features that Helps in Maintaining the Filling Level

A milk filler is equipped with different advanced features to maintain the filling level. It includes:

Photoelectric Sensors

Photoelectric sensors are integrated in a milk filling machine to detect jars, bottles, and other containers. When sensed the containers, the machine will fill them up with milk. If the desired level is reached, it will automatically close the filling nozzle to stop the process.


Timers are one of the feature that helps the machine to maintain the fill level. You can set a specific time length to dispense the milk into the bottles. When the time duration is reached, the machine’s filling nozzle will automatically open and release the product.

Volume controller

The volume controller equipped in the milk filling machine allows it to release a specific amount of milk volume into the container.

Overflow Gauge

This feature helps the machine to detect whether the bottles are filled with exceeded amount of product.

Shut-off Valve

Shut-off valves are connected directly in the filling nozzle’s solenoid. It helps in controlling the nozzle’s open and close mechanism.

Milk Filling Machine

Semi and Fully Automatic Milk Filling Machine Differences

Automation level. Semi-automatic milk filling machines still requires human operator to fully function. On the other hand, fully automated machines eliminates the use of human effort and all the working process is completely done using the machine.

Application. In terms of application, semi-automatic machines can be used for small to medium scale productions. It can fill bottles that ranges from 20 to 50 pieces per minute. However, fully automated machines are used for high-level production and can fill bottles from 70 to 120 pieces per minute.

Controls. The parameters of the semi-automatic milk filling machine will be adjusted manually by the operator such as pressure, temperature, speed, and more. Whereas automated milk filling machine, you just need to select the container type and all the other functions will be done by the machine.

Factors to Consider Before Purchasing a Milk Filling Machine

Before you purchase a milk filling machine, you should consider the following factors:

Machine Type

Determine what type of milk filling machine suitable to your production setup.

Bottle Size

If you want an economical choice, choose a milk filling machine that will be compatible to the different shapes and sizes of bottles.


Since milk products are perishable goods and can be easily contaminated, you need to choose a filling machine with excellent sanitation feature to ensure the freshness of the product.

Production Volume

Identify your production volume. If you have small to medium production volume, you can choose smaller milk filling machine. If you have large-scale production, choose a machine with greater filling capabilities.


Generally, industries such as food, dairy, and pharmaceutical have an increased demand for milk filling machines. These machines can greatly affect the production efficiency and accuracy. Milk filling machines have different types and functions but share common working principle. It also has a variety of components for smooth operation and features to maintain the filling level. Understanding its benefits and factors that you should consider will help you choose the right milk filling machine for your industry.

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