The working principle of a fully automatic vacuum packaging machine can be summarized as: automatic vacuuming, heat sealing, and continuous production. The core principle is to isolate air through vacuuming and high-temperature sealing, extending the shelf life of the product.
Core Workflow
Automatic Feeding and Positioning: After the packaged item (such as food) is placed in the packaging bag, it is automatically fed into the packaging station by a conveyor belt or robotic arm, with the bag opening precisely positioned below the heat sealing head.
Vacuuming: The vacuum pump is activated, drawing air through the bag opening to create a low-pressure or vacuum environment inside the bag, inhibiting microbial growth.
Heat Sealing: The bag opening is heated at high temperature by a heating strip while pressure is applied, causing the bag film to melt and adhere, forming a strong seal.
Cooling and Output: The sealed area cools and solidifies, and the finished product is conveyed out by the conveyor belt, entering the next cycle.
Key Technical Features
High Degree of Automation: PLC and touchscreen control enable automatic feeding, vacuuming, sealing, cooling, and output, reducing manual intervention.
Strong Sealing: Sealing is ensured through gas pressure difference and thermo-sealing. Some models utilize stretch film forming technology for a better product fit.
High Efficiency and Continuity: Continuous models use chain drive for continuous output of packaged products, resulting in high efficiency.