How To Operate Packing Machine

The usual operation process is roughly as follows:

• Start-up and security check (ensure that the shield is in place and clean up sundries);
• Feeding (put the film on the reel and fill the hopper);
• Parameter configuration (set the gram weight, bag length and sealing temperature through the touch screen – be sure to wait for the indicator light to turn green here);
• Automatic operation (turn on the “automatic mode”, the machine will complete the one-stop action of film pulling, detection, filling, inflation and sealing);
• Monitoring and fine-tuning (keeping an eye on the running film and fine-tuning the gram weight);
• Shutdown and cleaning (cleaning materials after production).

Of course, for specific security protocols, please be sure to refer to the manual you have on hand.

Step1: Power Up & Safety Check

Before moving any mechanical part, the operator must put safety and machine readiness first.

• Safety shield: Check that all plexiglass shields, cabinet doors and interlocks are closed. Today’s packaging machines are very “smart”. If the safety circuit is disconnected (for example, a door is not closed), the system will not let you start at all.
• Cleaning up debris: Check the cross-sealing tongs, the former (trunk) and the conveyor belt. Clean up any debris, dust or tools left over from the previous shift.
• Electrical start: close the main power isolation switch. Before pressing the main control power button, be sure to take a look at the emergency stop button (E-Stop) – make sure it is in the reset state (unplugged state). If the emergency stop is pressed, you will not respond if you press it again and again.

Step2: Material Loading

Whether the packaging materials are packed well or not directly determines whether the materials will be stuck and whether the bags are beautiful or not.

• Hanging film: install the roll film on the spindle. Pass the film through the stack of dancing rollers (dancer rollers) and formers according to the film-through diagram (usually attached to the side of the machine frame). The point is: make sure the membrane is right. If the membrane is not centered, it will definitely deviate when running, and it will be very troublesome to adjust.
• Filling hopper: The product (whether granular, powder or liquid) is fed into the feed hopper. By the way, take a look at whether the material level sensor is clean. If the sensor is covered, the machine will mistakenly think that the material is full and will not send a signal to the upper feeder to ask for the material.

Step3: Parameter Configuration

Now the packaging machine is basically equipped with HMI touch screen as standard, and the settings are completed here. The accuracy of this step directly determines the quality of the finished package.

• Specifications: Enter the target gram weight, the desired bag length, and the speed (BPM).
• Temperature control: Set the temperature of horizontal seal and vertical seal according to your film type (for example, the temperature of polyethylene PE film and aluminum foil composite film is completely different).
• Waiting to “turn green”: This is a common mistake for beginners – don’t turn on the machine immediately after setting the temperature. Look at the temperature indicator on the HMI and wait for it to reach the set point (it usually turns green). If you are too impatient, the sealing pliers are not hot enough, and the sealed bag will not only leak air, but also waste film.

Step4: Automatic Cycle Execution

After the machine has warmed up, production can begin.

• Start the automatic mode: Tap the “Start” or “Run” button on the screen.
• Action sequence: The machine starts to pull the film. At this time, the photo-eye (Photo-eye sensors) will grab the color mark (registration marks) on the film, which is to ensure that the position of the cut bag is accurate.
• Filling and sealing: The system will throw a specific weight of product into the formed bag. If your machine is equipped with a gas replacement function (Gas Flush/MAP), nitrogen will be seamlessly injected immediately before the sealing pliers close, ensuring the preservation effect.

Step5: Monitoring & Adjusting

Pressing the “start” button does not mean that the operator can go to tea. Continuous monitoring is the key to ensuring yield.

• Run film correction: stare at the movement of the film on the former. If the film is found to drift to the left or right, quickly use the correction knob or the settings on the screen to pull the film back to the center position.
• Online fine-tuning: every once in a while, take the package of finished products and check the weight on the electronic scale. If the grammage is found to drift, fine-tune the blanking time or vibration amplitude directly on the HMI. This kind of adjustment does not need to stop, while running while adjusting the highest efficiency.

Step6: Stop & Clean

The correct shutdown process can extend the life of the equipment, but also to meet health standards.

• End run: Press the Stop button. If you have the “End of Run” (empty run) function on your machine, it is best to use this, it can seal the last half of the bag and cut it off before stopping the machine, leaving no mess.
• Clean up materials: remove the remaining roll film and put it back in the warehouse. Be sure to empty the material in the hopper to prevent cross contamination or material deterioration.
• Hygienic cleaning: Wipe the former, sealing pliers and all food contact surfaces.
• Special reminder: Make sure that there is no residue on the sensor. I have repaired too many “false faults” caused by dirty sensors on site. Don’t let such trivial matters affect your next startup.

Note: Although this guide covers the general operating logic, be sure to consult the corresponding OEM manual for your specific vertical machine (VFFS), bag feeder (Rotary) or vacuum packaging machine, the specific maintenance plan and error code definition.

Author：Gill

With over 10 years of experience in the packaging machinery industry, I specialize in the installation and operation of VFFS and rotary packing systems. I write practical guides to help operators maximize machine efficiency while prioritizing safety and maintenance.