What is the Maotong Squeeze-type Pressure Inspection Machine?

2026/06/09 11:30



The "Maotong Squeeze-type Pressure Inspection Machine" (commonly referred to as a "tap tester" or "online leak detector") is essentially an "intelligent quality inspector" integrated into beverage or food packaging lines. It is specifically designed to rapidly determine whether the internal pressure of containers is normal, thereby identifying defective products with poor sealing, excessive or insufficient pressure, and automatically rejecting them.

Key Indicators Monitored

This equipment primarily targets filled and sealed gaseous beverage or food packages, such as nitrogen-flushed cans, two-piece/three-piece cans, and PE bottles. During inspection, it focuses on two key data dimensions:

  • Pressure Extremes: Whether the pressure inside the container exceeds safe limits. For instance, low pressure often indicates poor sealing or gas leakage, while high pressure poses risks of can deformation or even damage.

  • Sealing Quality: Even in high-speed production environments, the equipment can keenly detect subtle signs of leakage, ensuring only perfectly sealed products reach the market.

Core Working Principle

Its operation logic resembles a comprehensive, enclosed "physical examination" for each bottle/can, relying on a precise linkage mechanism:

  1. Flexible Squeezing: As products move along the line into the inspection position, the machine uses dual flexible belts to gently and controllably squeeze the moving can or bottle body.

  2. Data Feedback: At this point, built-in high-precision pressure sensors capture real-time pressure changes inside the container caused by the squeeze, converting physical signals into electrical signals.

  3. Central Processing: These pressure data are swiftly sent to the equipment's "brain"—a DSP processor or PLC control system. The system compares and calculates the measured data against preset standard values.

  4. Rejection Execution: Once abnormal pressure (high, low, or indicative of leakage) is detected, the system immediately instructs the rejection device to precisely eject these defective products from the line.

Core Value Provided

Compared to traditional methods like manual tapping/listening or sampling checks, introducing such online inspection equipment directly optimizes the production process:

  • Seamless Line Integration: It can be deployed as a fixed procedure directly after the filler or seamer, automatically inspecting every passing product.

  • Improved Operational Efficiency: Through fully automated identification and sorting, it significantly reduces manual labor pressure and fundamentally enhances overall detection efficiency.

  • Reduced Misjudgment Costs: The equipment not only accurately catches all defects but also minimizes false rejection rates to a certain extent, helping companies effectively control production waste while ensuring ex-factory quality.

If you are considering introducing such equipment, would you like me to compile a comparison of key specifications for popular Maotong models?



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