Case Study: X-ray Inspection for Aluminum Foil Packaged Products

Ensuring product safety under aluminum foil packaging has always been a challenge for many food manufacturers. Traditional metal detectors cannot penetrate aluminum foil, making it difficult to detect metal fragments or other foreign bodies inside sealed packages.
Recently, Guangdong Shan’an Technology successfully completed an inspection test using our X-ray Inspection System for a customer’s aluminum-foil packaged food products. The results demonstrated clear advantages in accuracy, stability, and adaptability.

Background

The customer produces snack items sealed in aluminum foil film. Due to the packaging material, their existing metal detector could not identify contaminants such as stainless steel, iron, or non-metallic foreign bodies. To ensure production safety, they required a detection solution that works regardless of packaging type.

Inspection Process

During the test, samples were placed directly onto the conveyor without any special preparation. The Shan’an X-ray system automatically analyzed internal structures of each package and detected multiple types of contaminants, including:

• Stainless steel

• Ferrous metals

• Glass fragments

• Hard plastic

• Stones and other dense materials

Even under high-speed production conditions, the system maintained a stable rejection accuracy and clear imaging.

Test Results

• Packaging type: Fully sealed aluminum foil

• Inspection speed: Suitable for continuous mass production

• Detection performance: Foreign bodies as small as 0.3–0.5 mm

• Reject system: Automatic, with real-time image storage

The customer confirmed that X-ray inspection provides a more reliable solution for their packaging line compared to traditional metal detection.

Why X-ray for Aluminum Foil Packaging?

• Detects foreign objects even through thick aluminum foil

• Identifies more than just metal

• Works with high-moisture, high-salt, or conductive products

• Provides real-time imaging for traceability

• Reduces product risks during audits and export inspections

Conclusion

Shan’an’s X-ray Inspection System offers an effective and stable solution for aluminum foil packaged products. With clear imaging, high precision, and compatibility with fast production lines, it helps manufacturers meet domestic and international food safety standards with confidence.

If you would like to arrange a similar test or learn more about our inspection systems, our technical team is ready to assist.