Detailed steps for beginners of bag making machines: master equipment operation and production skills from scratch

Release time：2025-09-13 Classification：Knowledge

As a core piece of equipment in the packaging industry, bag-making machines are crucial for production efficiency and product quality. For beginners, mastering the correct operating procedures and techniques is essential for smooth production. This article will provide a detailed guide to bag-making machine operation, helping you quickly get started and avoid common mistakes.

1. Basic knowledge of bag making machine

Before beginning operation, novices should understand the basic structure and operating principles of a bag-making machine. A bag-making machine primarily consists of a discharge device, heat sealer, cutter, control system, and a material collection device. It uses heat and pressure to seal film material and cut it into bags of the desired size. Common bag-making machine types include T-shirt bags, three-side sealers, and three-dimensional bags. While operating details may differ slightly between different types of equipment, the basic process remains similar.

2. Preparation before operation

  1. Safety first
    Before operating the bag making machine, be sure to be familiar with the safety specifications of the equipment. Wear protective equipment (such as gloves and goggles), make sure there is no debris around the equipment, and the emergency stop button is in an operable state.
  2. Material Preparation:
    Select the appropriate film material (such as PE, PP, or composite film) based on production requirements and check whether the material meets quality requirements. Ensure that the material roll is securely installed to avoid deviation or breakage during production.
  3. Equipment Inspection
    Before starting up, the bag making machine needs to be thoroughly inspected:
  • Check whether the power supply and gas source are normal;
  • Check that the heat sealing knife and cutting knife are clean and undamaged;
  • Check whether the transmission parts are well lubricated;
  • Test whether the various functions of the equipment (such as temperature control, tension control, etc.) are normal.

3. Detailed steps for bag making machine operation

  1. Power on and parameter setting
  • Turn on the power switch to start the device;
  • Set parameters such as temperature, pressure, and speed according to the material type and bag specifications. For example, the heat sealing temperature of PE material is usually set at 120°C-150°C, while PP material may require a higher temperature;
  • Enter the bag's length, width, and edge dimensions.
  1. Material threading and alignment
  • Lead the film material out from the unwinding rack and pass through the guide roller, tension control system and heat sealing device in sequence;
  • Adjust the position of the material to ensure it is on the center line to avoid deviation during production;
  • Use photoelectric sensors or manual methods to align the material to ensure the accurate position of the pattern or cut.
  1. Trial operation and adjustment
  • Conduct a trial run before formal production and produce a small number of samples;
  • Check the bag's sealing strength, cut flatness and dimensional accuracy;
  • Fine-tune the temperature, pressure, or speed parameters based on the sample effect. For example, if the edge seal is not strong, increase the temperature or pressure appropriately.
  1. Official production
  • After confirming that the sample is qualified, start the equipment for batch production;
  • During the production process, the quality of bags needs to be regularly inspected to identify problems and make adjustments in a timely manner;
  • Pay attention to the operating status of the equipment. If there is any abnormal noise or temperature fluctuation, stop the equipment immediately for inspection.
  1. Shutdown and cleanup
  • After production is completed, stop the equipment and turn off the heating system;
  • Cut off the power supply and gas supply;
  • Clean the residual materials on the heat sealing knife, cutting knife and guide roller to keep the equipment clean;
  • Record the day's production data and equipment status for subsequent maintenance.

4. Common Problems and Solutions


  1. Possible causes of loose edge sealing
    : too low temperature, insufficient pressure, or material problems. Solution: Increase the heat sealing temperature or pressure appropriately; check whether the material meets the requirements.
  2. Possible causes of uneven cuts
    : The cutter is worn or improperly installed.
    Solution: Replace or adjust the cutter position; check the stability of the cutter mechanism.
  3. Possible causes of material deviation
    : uneven tension or guide roller position deviation.
    Solution: Adjust the tension control system; recalibrate the guide roller position.

5. Maintenance and care

Regular maintenance is the key to extending the life of your bag making machine:

  • Clean equipment surfaces and key components daily;
  • Check the drivetrain and electrical components weekly;
  • Carry out comprehensive lubrication and precision calibration of equipment every month;
  • Major maintenance is carried out by professional technicians every year.

Operating a bag-making machine requires a combination of theory and practice. Beginners should pay close attention to detail during the initial stages of operation, strictly following specifications at every step, from preparation to production. With continued experience, you'll master bag-making machine techniques, improving production efficiency and product quality. We hope this article provides practical guidance on your journey to bag-making machine operation!