Inflatable Food Leak Detection Machine

Product Overview

System Performance

Inflatable Food Leak Detection Machine The MT-DZ-XL-S2-01 is an advanced automatic functional inspection system developed for high-speed production environments, capable of inspecting up to 300 packages per minute. The equipment utilizes a contact-type online testing method to directly measure the internal pressure characteristics of packaged products with high precision and consistency. Its detection stability and accuracy exceed many comparable domestic and international solutions.

The system is based on Maotong’s proprietary belt-compression inspection technology, which has been continuously optimized through more than ten years of practical application and technical development. During operation, a flexible belt mechanism applies controlled compression to the product while it travels along the conveyor line. A sensor mounted on the side detects the corresponding internal pressure response, which is converted into digital signals by the controller. These signals are then processed through a DSP-based algorithm to accurately evaluate internal pressure conditions and product integrity.

Applicable Products

· Cartons or pouches containing liquid nitrogen

· Plastic bags filled with gas or steam

· Aluminum-foil stand-up pouches containing liquids

Inspection Functions

· Detection of seal leakage or sealing defects

· Identification of insufficient internal pressure or abnormal swelling

Main Technical Features

· Automatic synchronization with production line speed, including automatic stop during conveyor downtime to prevent package rupture or blockage

· Inspection speed above 300 packs/minute

· Compatible with both high-pressure and low-pressure products

· Pressure measurement accuracy within ±0.02 MPa

· Excellent resistance to vibration and impact during high-speed operation

· Intuitive and easy-to-use HMI interface

· Real-time display and monitoring of rejection statistics

· Visual warning indicator for abnormal impacts or operating conditions

· Fully localized Chinese operating menu

· Proprietary Maotong DSP digital signal processing technology

· 24-hour remote technical assistance capability

· Continuous automatic rejection with protective shutdown function 

Schematic diagram of equipment extrusion

To improve inspection reliability, a guiding and pre-compression mechanism is installed at the front section of the machine to maintain a stable internal pressure before testing. For leaking products, pressure is released as much as possible before the final pressure measurement at the rear section. Products without leakage exhibit minimal pressure variation, whereas leaking or poorly sealed products show significant pressure deviation from the normal reference value. This method enables dependable detection of leakage and sealing defects.

Detection Principle

As a product enters the conveyor system, a positioning sensor detects its arrival and records the product ID together with encoder signals through the control system. At the same time, the sensor activates the force sensor to collect the instantaneous pressure generated between the product and the belt.

The pressure signals are transmitted through the network to the Maotong signal processing board for data analysis and processing. The analyzed results are then sent to both the human-machine interface (HMI) for real-time display and the control system for evaluation. If the detected pressure values fall outside the acceptable range, the controller issues a reject command to the rejection mechanism, which removes the defective product from the production line.

Equipment Installation

Transportation, Handling, and Storage

During transportation, the equipment must be securely fixed and properly packaged. Particular attention should be paid to protecting the sensors from compression or tensile stress. The exterior should be covered with moisture-proof and shock-resistant materials to prevent scratches, deformation, or water damage.

The machine must be firmly secured inside the transport vehicle to minimize vibration damage during transit. During unloading, appropriate lifting and handling equipment should be used, and the machine must be properly stabilized to prevent slipping or accidental impact.

Recommended environmental conditions for storage and operation are as follows:

· Relative humidity: 10%–80%

· Ambient temperature: 0°C–50°C

Installation Conditions

Install the equipment on a level surface, ensuring the clamping conveyor is properly aligned and parallel to the main conveyor line.

Before switching on the power supply, verify all cable connections and confirm that the control cabinet is properly grounded.

Electrical requirements:

· Single-phase AC 220V

· 50Hz

· Total power consumption: 250W

Pneumatic requirements:

· Compressed air pressure: 4–8 bar

· Air quality must comply with industrial standards

For maximum inspection accuracy, products should be tested after cooling. The equipment should be installed on a straight conveyor section with a recommended length of 1.5–2 meters.

Mechanical Structure

Overall dimensions: Refer to the supplied dimensional drawing.

Frame material: Integrated 304 stainless steel construction with conveyor assembly.

Approximate machine weight: 100 kg.

Operational Safety Instructions

Before operating the equipment, observe the following safety requirements:

Only personnel who have received basic operational training are permitted to operate the machine.

Maintenance and repair work must be performed by qualified technicians.

Before operation, ensure that all protective devices and warning labels are present and functioning correctly.

Do not run the equipment with the protective cover open. The cover may only be opened after disconnecting both electrical power and compressed air.

Keep hands away from the reject cylinder linkage during operation.

Do not block or touch the photoelectric sensor while the machine is running, as this may cause false reject actions, equipment malfunction, or personal injury.

Never disconnect electrical wiring while the machine is powered on, as this may damage electronic components.

During maintenance, apply proper lockout/tagout procedures to prevent accidental startup and potential injury.

Before connecting any external equipment, ensure both systems are powered off. Restore power only after all connections have been completed.

Since the electronic components are highly sensitive to electrostatic discharge, proper grounding of both the machine frame and control cabinet is mandatory.