Learn about liquid packaging machines from A to Z
16-08-2025 134
Liquid packaging machines have become indispensable tools in many fields such as food, cosmetics, pharmaceuticals and chemicals. With the ability to pack quickly, accurately and ensure hygiene, this device not only helps save time and costs but also increases brand value. Let’s explore the details of liquid packaging machines with intechvietnam in the article below.
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What is a liquid packaging machine?
A liquid packaging machine is a specialized equipment used to package liquids into packaging, helping to preserve the product and ensure aesthetics and hygiene. This type of machine is specially designed to handle products with different viscosity, from light liquid solutions such as water, cooking oil, syrup to thick liquids such as cream, condensed milk, or chemicals.
This equipment works by accurately measuring the liquid as required, then sealing the packaging, ensuring quality and increasing the professionalism of the product.
What are the applications of liquid packaging machines?
Liquid packaging machines are widely used in the food industry, chemical industry, pharmaceutical industry, and agricultural industry.
- Food industry: Liquid packaging machine is widely used in filling and packaging of beverages, dairy products, spices, sauces such as fruit juice, various drinks, soy sauce, vinegar, ketchup, milk, yogurt, etc.
- Chemical industry: Applied in filling and packaging of shampoo, shower gel, hand sanitizer, disinfectant, alcohol, body lotion, conditioner, washing powder, hand cream, glue, etc.
- Pharmaceutical industry: Packaging machine is used in filling and packaging of alcohol, oral medicine, syrup, cooling oil, disinfectant, iodine, children's cold medicine, mouthwash, various sprays, external liquid preparations, ear drops, glycerin, washing medicine, etc.
- Agricultural industry: Commonly used for filling and sealing liquid preparations of various pesticides and insecticides. Such as herbicides, paraquat herbicides, fungicides, insecticides, etc.
Main components of liquid packaging machines
A basic liquid packaging machine line will include two main parts: liquid filling equipment and liquid sealing equipment.
In terms of the structure of the liquid packaging machine, there are seven main parts including: film winding equipment, date printing machine, bag making equipment, rotary head sealing equipment, conveyor output equipment, control system, feeding platform.
- The control system is also known as the touch screen control panel, which is designed to control the start, stop, automatic mode, self-test, self-cleaning, self-maintenance, etc.
- The feeding platform is also known as the feeding hopper, which is designed to feed liquid materials into the packaging.
- The film winding equipment is also known as the automatic film reel, which is designed to control the up and down movement of the film rolls to form the liquid bag.
- Date printer also known as inkjet printer, is designed to print product information such as production date and expiration date on the film roll.
- Liquid packaging machine uses cylinder stroke measurement and the data can be linked to the dispenser.
- Bag making equipment is designed to form roll film into bags such as pouches or bags for filling and sealing liquids.
- Rotary head sealing equipment also known as sealing machine is designed to seal liquid bags and pouches firmly and beautifully and this is the final step of liquid packaging machine.
- Conveyor outlet device also known as outlet hopper, is designed to take the finished product out of the liquid packaging machine.
Classification of liquid packaging machine
Liquid packaging machines are classified as follows:
1 - Classification by machine design
+ Vertical liquid packaging machine
The vertical design of liquid packaging machine has many functions including filling, labeling, sealing, counting, bag making. With the production capacity of 20 bags/min, 40 bags/min, 25 bags/min, 50 bags/min, 30 bags/min, the machine can do pillow sealing, vertical sealing and punching.
Working principle: Liquid and paste will be fed into the feeding hopper. The liquid will be sucked into the cylinder by the piston pump. The film will be formed into a bag and sealed by the bag making machine with vertical sealing device, and the liquid will be weighed and injected into the bag. The bag will be sealed and cut by the horizontal sealing device. The finished product will be conveyed from the outlet.
+ Horizontal Liquid Packing Machine
The horizontal design of the liquid packing machine can fill and seal three or four sides of the liquid bag. With a production capacity of 20 bags/min, 40 bags/min, 25 bags/min, 50 bags/min, 30 bags/min, the machine can pack various liquid, paste and cream products such as water, oil, milk, juice, ketchup, tomato sauce, peanut butter, honey.
Working principle: When the horizontal packaging machine starts working, the machine's weighing control system starts to automatically add materials. This machine has fast and slow filling methods for you to choose from. At this time, the system's bag making device starts to work and the made packaging bags start to be clamped. The weighed liquid material starts to be automatically packed into the prepared bag. After the heat sealing device seals the packaging bag, the packaging bag will automatically fall onto the conveyor belt.
2 - Classification by filling form
+ Liquid sachet packaging machine
This type of packaging machine is specially applied to fill and seal liquid sachets or small bags or small bags. With small volume each time, the sachet type machine is more accurate to weigh and pack liquid materials.
Working principle: The liquid packaging machine mainly relies on monitoring and controlling the flow, pressure, temperature and other parameters of the liquid material itself, and then supplies the packaging material to the packaging station through the automatic centralized supply system to complete the liquid filling and packaging.
+ Doypack Liquid Packaging Machine
The Doypack Liquid Packaging Machine is specially applied to fill and seal liquid bags or standing bags. This machine can produce doypack and complete the filling and sealing process at the same time with high efficiency.
Working principle: The Doypack liquid packaging machine automatically prints the date and batch number information on the film through the printer, and uses heat-sealable packaging materials to automatically complete the bag making. The finished bag is a stand-up bag. Different forms of filling machines are selected to automatically fill liquid materials. The filled material is sealed by a relatively independent sealing system.
3 - Classification by packaging method
In terms of packaging method, there is a rotary liquid packaging machine.
The rotary liquid packaging machine is a machine that can complete the liquid filling process by which the packaging container rotates at a constant speed in the circumferential direction. The rotary liquid packaging machine can complete the filling and sealing of stand-up bags and pre-made bags.
Working principle: The rotary liquid packaging machine uses the method of continuous watering and sealing of liquids and pastes. The bag will be coded in the first step, and then the bag will be opened for filling. During the filling process, the packaging bags rotate at a constant speed in the circumferential direction, and the filling process is completed at the same time during the movement. Then the bag will be sealed by the heat sealing unit. Finally, the bag will be shaped and transferred to the output conveyor.
Advantages of liquid packaging machine in production
- The liquid packaging machine is corrosion-resistant, wear-resistant, and can work continuously.
- The parts of the liquid packaging machine that contact the material are made of 316 stainless steel. Such material design can overcome the influence of machine corrosion when packaging pesticides.
- Using touch screen technology of PLC control system. This design can make it easy for staff to control the machine.
- Designed to be automatic, no need for manual operation, high capacity, average capacity can be up to 60-100 bags/minute.
- Fully automatic filling and packaging, no need for staff participation during the process. This can ensure the hygiene and safety of the material.
Can be used to package food liquids, chemical liquids, pharmaceutical liquids and agricultural liquids
The liquid packaging machine is the perfect solution to optimize production, improve product quality and meet strict hygiene and safety standards. Investing in this modern equipment is not only a way for businesses to improve their competitiveness but also towards sustainable development in the future. If you are looking for an effective packaging solution, consider it now to make a difference for your products!
The liquid packaging machine is the perfect solution to optimize production, improve product quality and meet strict hygiene and safety standards. Investing in this modern equipment is not only a way for businesses to improve their competitiveness but also towards sustainable development in the future. If you are looking for an effective packaging solution, consider it now to make a difference for your products!
