Vertical Form Fill Seal Machine
(VFFS Machine )
VFFS Machines
Vertical Form Fill Seal (VFFS) machines are used to vertically turn the film into a bag. It is used in most industrial productions, including low, medium and high-speed filling applications in the food and non-food industries. It usually installed in the last stage of the production line, behind the weighing machine, which is the packaging stage. Their role is to package the productso n the production line for easy transportation, storage, and sales.
Vffs packaging machine working principle is to use a single-film coil to weld the package in three places, two horizontal fork welding and one vertical vertical welding. It should be mainly used in solid loose products, granular products, liquid beverages, etc., and it can be used everywhere in industrial packaging.
Vertical Form Fill Seal Machine For Sale
A few popular products for your reference,They are suitable for different applications.
Benefits In Details
Quickly adjust or change bags of various sizes with no tools , all processes can be completed in a few minutes.the speed can be adjusted at continuous motion working .
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A variety of functional packaging combinations to create the most suitable packaging style for you, including four-side sealed bags, bottom gusseted bags, standard pillow-shaped bags etc.
Easily integrated into existing production line , simple installation operations can be added to the current combination scales, conveyor belts, and checkweighers.
Durable stainless steel body, not only suitable for industrial products, but especially suitable for food with strict hygienic cleaning conditions
How do Vertical Form Fill Seal Machine Wrok?
The VFFS is vertical packaging machine consists of the following parts: filling area, forming area, film pulling and alignment area, sealing and cutting area, Vertical form fill seal machine diagram as shown in the picture.
The working principle of the general vertical packaging machine is as follows:Prepare to pull the film. The packaging material is generally PE, PP and other materials. It is prefabricated into a roll-shaped film according to the size and pattern you specify. The film is pulled and tensioned thanks to rollers and a weighed pivot arm. It Usually placed at the back of the machine.
The bag is formed.The packaging film is laid flat and tensioned onto the former, the film is wrapped around the forming tube and pulled along the tube, just after forming, some pull down straps are installed to move the film and let it pull into a tube shaped film bag.
Vertical Sealing.When the packaging material is well wrapped on the molding and enough length , side sealing can be performed. When calculating the width of film, an extra part of the film width have inclued so that the width of the bag when it is formed is If there is overlap, use sealing pliers or sealing strips to weld the overlapping part of the overlapping materials to form a side sealing.
Bottom sealing.before the product is injected after the side sealing is completed, the bottom sealing is done by another pair of sealing rods, which can weld the material by pressure and heat.
Product filling.The product falls through the forming tube and falls inside the bag.
Top seal & cut.Once the product is dropped, the performing bottom sealing jaws are activated again, creating the top seal and when closing the bag it is cut and dropped, usually with a conveyor belt, to the next packaging step.
Purpose Of The VFFS Machine
The VFFS machine is suitable for packaging a specific quantity or weight of products in bags, suitable for solid loose materials, powders and granular products, because it uses a drop method to put the product into the bag from the tube, so it is not It is very suitable for products that are too viscous and difficult to flow, or products that are extremely deformed or broken.
Products packed by VFFS machines are wide use, such as: nuts, biscuits, candy, chocolate, potato chips, cheese, etc.
Powdered products: salt, brown sugar, cocoa powder, coffee powder, seasoning, etc.
Frozen food: frozen meat, frozen chicken nuggets, frozen fish, frozen dumplings, etc.,
There are also most fruits and vegetables, salad, hardware and so on
The performance and type of VFFS vary with different products, and our professional team will give suitable solutions for different products.
VFFS Main Models & Features
| Model | Application Range | Features |
|---|---|---|
| Small Vertical Packaging Machine | Small packages of particulates, powders or liquids (e.g. coffee powder, seasonings, pharmaceuticals) | Compact structure and small footprint; supports back seal, three‑side seal and other bag types; ideal for start‑ups or pilot lines |
| High‑Speed Vertical Packaging Machine | Medium‑ to high‑volume production lines for foods, snacks and small granulated products | Speeds of over 100 bags per minute; automatic film tracking and edge correction; optional printing devices (date codes, barcodes, etc.) |
| Heavy‑Duty Vertical Packaging Machine | Heavy or bulky products such as pet food, hardware parts and frozen foods | Reinforced frame and powerful servo drive; capable of packaging 5–20 kg bags; supports gas flushing for extended shelf life |
How to Choose the Right VFFS Machine?
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Product characteristics: Consider the product’s shape, size, weight, texture and viscosity, since these factors influence the dosing method and whether a VFFS machine is suitable. Products that are very large or highly viscous may require alternative solutions.
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Bag type & material: Determine whether you need a pillow‑style (back center seal), three‑sided seal, block bottom, gusseted bag or other format. Choose appropriate packaging materials—such as polyethylene, polypropylene, laminate films, foil or paper—to ensure a secure seal and product protection.
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Production capacity & speed: Assess your throughput requirements and target production speed, then select a VFFS model that meets or exceeds these demands.
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Reliability & maintenance: Opt for a machine that is reliable, requires minimal maintenance and is easy to repair. This helps maintain continuous, stable production.
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Cost & budget: Weigh your budget constraints and long‑term operating costs against the machine’s capabilities to identify the most cost‑effective option.
Yes. An optional gas‑flushing system can be installed. By injecting an inert gas such as nitrogen or carbon dioxide to displace oxygen inside the package, the shelf life of the food can be extended.
The machine can be fitted with a coder or thermal‑transfer printer, which supports printing dates, batch numbers, barcodes and other traceability information.
VFFS (Vertical Form Fill Seal) machines seal bags through a process called heat sealing. Heat sealing is a common technique used in packaging machines to join two materials together using heat and pressure. The VFFS machine uses heat sealing to seal the edges of the bag after it has been filled with the product.
Regularly clean the sealing components and conveyor system, and check and replace wear parts as needed. Lubricate and service the machine according to the operating instructions, and remove product residues promptly to prevent them from affecting seal quality.