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The VFFS process involves creating a bag from a roll of flat film, filling it with the product, and then sealing the bag. The film is pulled downward by a set of rollers, creating a tube that is formed around a forming collar. The product is then deposited into the bag through a filling tube, and the bag is sealed by heat or ultrasonic sealing. The bag is then cut and discharged. VFFS Packaging machines can be equipped with different options such as gas flushing to create a modified atmosphere, coding devices to print batch codes, and label applicators to apply labels onto the packaging.