What is the function of vertical form fill seal machine?
1. Forming:
The machine forms a tube of packaging material (usually plastic film) around a hollow, cylindrical forming tube.
2. Sealing vertically:
It creates a vertical seal along the length of the tube, typically using heat sealing.
3. Filling:
The product to be packaged is dispensed into the tube from above.
4. Sealing horizontally:
The machine creates horizontal seals across the tube, forming the top seal of the filled bag and simultaneously the bottom seal of the next bag.
5. Cutting:
It cuts between the horizontal seals to separate individual packages.
6. Printing (optional):
Some VFFS machines can print information like expiration dates or batch numbers on the packages.
7. Gassing (optional):
For some products, the machine can inject inert gas to extend shelf life.
8. Measuring:
Many VFFS machines incorporate weighing systems to ensure accurate product amounts.
This type of machine is widely used in the food, pharmaceutical, and consumer goods industries for packaging a variety of products such as snacks, powders, liquids, and small solid items. VFFS machines are valued for their efficiency, as they can produce a high volume of packages in a short time, and their versatility in handling different package sizes and shapes.
