Bag Leak Detection Machine
1.Using extrusion method and advanced force analysis algorithm, the fastest output can reach 400 bags / min.
2.It is suitable for nitrogen flled and other inflatable bagged food products
I. Product Overview
1. Performance Summary
The Bag Leak Detection Machine is a fully automated functional testing system designed for high-speed production lines, capable of inspecting up to 300 packs per minute. Utilizing a contact-based online testing method, it accurately measures the internal pressure of packaged products, delivering consistent and dependable results. Compared with similar domestic and international solutions, it offers superior measurement precision.
The system’s core technology is its belt-squeeze detection method, developed through over a decade of research and practical application. As products move along the conveyor, a flexible belt applies controlled pressure, while a side-mounted sensor captures the internal pressure response. This signal is digitized and analyzed by the controller to assess internal pressure and sealing quality accurately.
2. Suitable Products
Cartons or pouches containing liquid nitrogen
Plastic bags with gas or vapor contents
Stand-up pouches containing liquid aluminum foil
3. Inspection Capabilities
Detects leaks caused by faulty seals
Identifies under-pressurized or over-bulging packages
4. Key Features and Specifications
Automatically tracks production line speed; stops operation if the line halts to prevent product damage
Testing throughput exceeds 300 packs per minute
Supports both high- and low-pressure products
Pressure measurement precision: ±0.02 MPa
High-speed testing capability
User-friendly Human-Machine Interface (HMI)
Real-time display of multiple rejection data sets
Visual alert system for abnormal events
Full Chinese-language interface
Proprietary Maotong DSP-based digital signal processing
24/7 remote technical support
Automatic continuous rejection shutdown
The system incorporates a front-end guiding mechanism that pre-compresses the product to stabilize pressure before measurement. For defective packages, the system allows maximum pressure release and measures the residual pressure at the outlet. Intact products show minimal pressure variation, whereas faulty or poorly sealed items display significant deviation, ensuring highly reliable detection of leaks and sealing issues.
serial number
| Test contents | Test Description | Rejection rate
| False rejection rate
|
1 | Bag leakage | Improper sealing or leakage caused by material jamming | ≥99.98% | ≤0.05% |
2 | Bag pressure | Bagging pressure after sealing is too low or too high, deviating from the normal value by ±0.02 MPa | ≥99.93% |
II. Equipment Installation
1. Transport, Unloading, and Storage
During transport, the system must be securely packed, with sensors protected from impact and tension. Wrap the machine in moisture-proof and shock-resistant material to prevent scratches, dents, or water damage, and ensure it is firmly secured in the transport vehicle.
For unloading, use appropriate handling equipment and secure the system to prevent slips. During storage or operation, maintain conditions within a relative humidity of 10%–80% and a temperature range of 0°C–50°C.
2. Installation Requirements
Place the machine on a level surface, aligning the clamping conveyor belt with the bottom belt.
Before powering on, verify all cable connections and ensure the control cabinet is grounded.
Power supply: single-phase AC 220V, 50Hz; total power: 250W
Compressed air: 4–8 bar, meeting standard industrial quality requirements
For optimal performance, inspect products after cooling and install the system on a 1.5–2 m straight conveyor section
3. Structure and Technical Data
Dimensions: as shown above
Frame: 304 stainless steel, integrated with conveyor
Weight: approximately 100 kg
