Home-How does vertical form fill seal machine (VFFS) work?

How does vertical form fill seal machine (VFFS) work?

(Last Updated On: November 18, 2020)


With industrial technology development, vertical form fill seal machine is becoming more and more popular for industrial packaging.

Why so many people use the vertical form fill seal machine nowadays? Economical and Time-saving for packaging needs release.

However, there’s still a lot of people who want to know about the vertical form fill seal machine.

Therefore, Synda Pack will write a know-how article and let more people use the vertical form fill seal machine soon or later.

Download PDF saving the reading time > How does VFFS machine work? 

What is a vertical form fill seal machine (VFFS)?

At the very beginning, we need to know what is the vertical form fill seal machine.

A vertical form fill seal machine is a kind of pouch making and filling machine with a vertical structure. It’s mainly used for industrial packaging and processing which provides a more convenient and effective way of automatic packaging, saving a lot of time and cost.  With more than 20 years of experience in this field, Synda Pack can give you the most advanced and high-speed vertical form fill seal machine (VFFS).

There are many types of vertical packaging machines. VFFS is one of them which integrated multi-function of pouch making, filling, data printing, and accounting. With servo motor film pulling and automatically bias-correction during film pulling, it guarantees the VFFS machine smoothly running. Both horizontal and vertical sealing use the pneumatic cylinder with reliable moving.

With the compact design and advanced electrical control, VFFS is a wonderful multi-function packaging machine for different industries, such as snacks food, sugar, shampoo, pet food, coffee, tea, yeast, feedstuff, fertilizer, etc.

In order to meet different pouch styles, the VFFS machine has been improved to adapt it. With new gadget devices added, it can make a lot of kinds of pouches. For example, there are a pillow pouch, gusset sachet, perforated with hang-out for shelf stick showing, and quad seal. Synda Pack can give you the best VFFS machine with the most wanted pouch styles.

Furthermore, VFFS has a great partner that is the filler, also known as a filling device. Weigh filler, volumetric cup filler, auger filler, pump filler, etc. Synda Pack will choose the most suitable filler for your raw product.


What are the main components of Vertical form-fill-seal Machine?

The main components of the vertical form-fill-seal machine are as below:

  1. Film Pulling System 
  2. Printer (Optional)
  3. Pouch Former
  4. Filling & Sealing Machine
  5. Pouch Cut
  6. Control Cabinet

To know the main components of the VFFS machine will be better to know the structure of the machine. Then it will be easier to know how does the vertical form fill seal machine works. Let’s dive into this topic directly now.




How does vertical form fill seal machine (VFFS) work?

Are you still curious about the VFFS machine now?  Generally, we just need to know how does the VFFS makes the roll of film into the pouch on the shelf. From the very beginning, the vertical packaging machine a large roll of plastic film usually compounds plastic film, then makes it be formed pouch, fill the bulk product into it, seal it, that’s it. All this processing is vertical action with speed up to 40 bags per minute.

1. Film Pulling System

This system consists of an unwinding roller and tensioner. There’s a long long film that rolled as a roll that we called the roll of film.


This film is usually laminated PE (polyethylene), PET, Paper, and Aluminium foil. The rollstock film will be placed on the unwinding roller back of the VFFS machine.


There are servo motors that drive and pull the film on the reels of the film pulling system. It perfectly co-works with each other and continuous motion pulling smoothly and reliably.



Film drawing device of vertical form fill seal machine


2. Printer (Optional)

After the film drawing to the position that the printer (optional), the photo-eye will catch the deep color tag printed on the rollstock of the film. Then it will print the date, production batch code on the film. The printer has usually two types: one is normal that uses a black color ribbon; the other is TTO (Thermo Transfer Overprint).


3. Pouch Former

After the printing of the film, it moves to the bag former. It’s like a collar of human clothes.

The bags or pouches are made via this bag former with a wide range. Different sizes of bags can be made with different sizes of bag formers.

It needs to change over the forming cube if needs to package different size of bags. It only needs several minutes to change over it.

Besides having the function of bag forming, the bag former has also a function of filling. The bulk material will be filled into the pouch through it.

The bag former is made of stainless steel and makes sure suitable for foodstuff.



VFFS machine pouch former


4. Filling and Sealing of bags

There are 2 sets of sealing devices. One is a vertical sealer, and the other is a horizontal sealer. With dual vertical sealing jaws, it can make the vertical pattern.

If you use a single vertical sealer and press on the bag former, it will make a falt or net pattern. Different types of sealers can do variable sealing patterns.

After the bags sealing, the weighed bulk products fill into the bag sealing.


5. Pouch Cut

There is a cut inside the horizontal sealers. It cuts the edge of the pouch on the flat bottom after sealing. Now let’s move to the next action of the vertical bagging machine.


6. Control Cabinet

On the side of the VFFS Machine, there attaches to a control cabinet. It contains all the electrical parts inside. PLC, contactor, servo motors, pneumatic cylinder, solenoid valves, PLC expand mode, low-pressure electrical parts. HMI(Human-Machine Interface is at the outside of the cabinet control panel.






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