Application Case | From “Vague Judgment” to “Precise Quantification”: Thermal Imaging Technology in Aluminum Foil Sealing Defect Detection
Aluminum foil sealing, with its advantages in barrier protection, sealing integrity, and safety, is widely used in daily chemical, food, and pharmaceutical industries, serving as a critical defense for product quality. The quality of a seal is not determined by surface smoothness alone; a perfect seal and a fatal “false seal” appear nearly identical after cooling.
Advantages of Infrared Detection:
Thermal imaging technology shifts inspection standards from relying on visual appearance to quantitative analysis of temperature. A perfect heat seal leaves behind a uniformly heated, sharply defined, and consistently wide melt mark, where any defect disrupts this uniformity. Thermal imagers visualize and precisely read the temperature distribution across the sealing area, enabling direct assessment of seal quality.
MindVision's independently developed MV-GF120 thermal imaging industrial camera precisely captures the temperature distribution of aluminum foil seals without any contact, identifies defects, and addresses the pain points of “difficult to detect and prone to missed inspections” at the source.
Precise capture of hot-melt temperature
Precise Temperature Measurement: With ±1°C measurement accuracy combined with ≤55mK thermal sensitivity, it can detect minute temperature differences between defects such as “false seals” and “micro-leaks” and qualified products, providing reliable basis for quality assessment.
Instantaneous Response: Thermal response time of <15ms matches production line speeds, enabling millisecond-level risk alerts.
High-definition, high-speed imaging
High-Detail Clarity: With 400×300 resolution and 17μm pixel size, it generates richly detailed thermal images. Temperature variations are clearly translated into distinct color zones, enabling instant defect identification.
No Motion Blur at 50Hz Frame Rate: The high 50Hz frame rate captures sharp thermal images of objects in real time—no frame loss or motion blur—preventing missed inspections.
Ensure the reliability of testing
Full Data Output: Supports outputting temperature values, grayscale values, and pseudo-color data for each pixel point, retaining detection records to enable root cause analysis;
Intelligent Diagnosis: Allows setting a qualified sealing temperature range with automatic alarm upon exceeding limits; ensures absolute accuracy of temperature measurement results in complex scenarios by configuring material emissivity and environmental compensation.
Application Cases
By analyzing the thermal distribution patterns formed after aluminum foil sealing, the integrity of the seal can be assessed non-destructively and rapidly, thereby effectively ensuring the quality of product packaging.
▲Sealed and intact
▲nominal title
Camera Specifications
MV-GF120 | |
Sensor | GST417M |
Camera Type | Thermal imaging |
Pixel size | 17umx17um |
Image Display | Black Heat/White Heat/Rainbow Colors |
Resolution@Frame Rate | 400X300 50Hz |
Exposure method | Automatic |
Sensitivity | NETD≤55mK |
Data Interface | Gigabit Ethernet |
Application Industries
Semiconductor
Power Monitoring
Metallurgy
Medical
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