A Vertical Form Fill Seal machine (VFFS) efficiently automates the packaging process through the following streamlined steps:
9-Step VFFS Packaging Process
The VFFS process is fast, efficient, and precise, running multiple cycles per second to create sealed pouches. Here’s a breakdown of how it works:
1. Film Unwinding (Rollstock Loading)
A roll of flexible packaging film (plastic, laminated film, or foil) is loaded onto the mandrel and unrolled through the carriage assembly. Different machines have varied methods for film transportation.
2. Tension Control (Dancer Arm Movement)
A dancer arm moves up and down to maintain consistent tension as the film is fed through the machine, preventing wrinkles and misalignment.
3. Printing (Optional)
An integrated printer applies lot codes, expiration dates, barcodes, or branding as the film moves through the system.
4. Film Registration (Eye Mark Detection)
A photoelectric sensor detects eye marks (registration marks) printed on the film to ensure accurate positioning for precise cutting and sealing.
5. Film Alignment (Tracking & Adjustment)
A film tracking sensor confirms proper positioning. If misalignment occurs, an actuator automatically corrects the film’s path to maintain accuracy.
6. Forming the Bag
The film is then fed around a forming collar, shaping it into a cylindrical tube. A vertical seal is then created using heat sealing or ultrasonic sealing, forming either a lap seal or fin seal.
7. Bag Size Configuration
The width of the pouch is determined by the forming collar size. The length of the pouch can be adjusted anytime using machine settings. Intermittent motion machines have small pauses between each cycle, while continuous motion machines run non-stop at higher speeds.
8. Product Filling
The bag remains open at the top while the product is dispensed through a filling system, which varies based on the product type:
- Auger filler – for powders (e.g., coffee, flour).
- Volumetric cup filler – for granules (e.g., rice, beans).
- Piston pump – for liquids and pastes (e.g., sauces, gels).
- Multi-head weigher – for precision weighing (e.g., snacks, candies).
9. Sealing & Cutting (Final Step)
- A horizontal seal is applied to close the top of the pouch. A cutting mechanism separates individual bags or keeps them in strips.
This automated, high-speed process ensures consistent, hygienic, and efficient packaging, making VFFS machines ideal for food, pharmaceuticals, cosmetics, and other industries.
Looking for an efficient packaging solution? Contact us today to explore how our VFFS machines can optimize your production process!
