Define detection limits
Agree realistic minimum defect sizes and contrast using controlled trials.
Seal contamination detection
Stop visible contamination passing through the seal area
Inspect the defined sealing path for product, moisture, particles and other anomalies that can interrupt a reliable seal.
The inspection challenge
Make the critical seal zone measurable
Contamination can vary in colour, size, position and contrast. We use representative samples to define the detectable defect range and select the camera, illumination and processing method around the real pack—not a generic laboratory image.
- Particles and crumbs in the seal path
- Sauce, liquid or moisture contamination
- Powder deposits and product smears
- Foreign material with visible contrast
- Seal-zone width and location monitoring
- Fault image capture for review
Production outcomes
Designed to make every decision useful
Separate defect from variation
Teach acceptable film, print and product variation into the inspection.
Act at the right point
Reject or stop before more packaging value is added downstream.
Application framework
What the system can include
Final scope follows trials and a line survey. The table shows the main engineering considerations for this inspection type.
Send us your pack detailsPossible sensingVisible, monochrome, colour, near-infrared or thermal depending on the application
Trial inputsGood packs, known defects, normal extremes, films, trays and product variants
Acceptance criteriaDefined defect size, location, contrast and repeatability by product recipe
DataFault type, timestamp, counts and saved images where specified
A controlled route to production
From sample pack to validated inspection point
Reliable inspection begins with realistic defects and finishes with the line proving that the correct failed pack was removed.
Define the fault
Agree the pack, line speed, critical seal area and pass/fail tolerance.
Prove the image
Trial representative good packs, known failures and normal production variation.
Engineer the station
Specify handling, optics, lighting, controls, guarding and reject method.
Integrate & validate
Install, commission and test the complete inspection and rejection sequence.
Practical answers
Seal inspection questions
Clear answers before you invest in an in-line inspection project.
What is the smallest contamination you can detect?
It depends on camera resolution, field of view, line speed, contrast and presentation. We establish a practical threshold through trials with representative defects.
Can you detect contamination under printed film?
Sometimes, but print can obscure visible features. Alternative wavelengths, lighting or thermal methods may improve separation; sample testing is essential.
Does this prove the seal is leak-tight?
No. Vision confirms defined visible or thermal features; it does not automatically replace leak, burst or seal-strength testing unless a validated correlation has been established.
Application guidance
Prove that the contamination is visible at production speed
Contrast, film print, residue type and access to the complete seal path set the realistic detection boundary.
Defect libraryProduct, powder, liquid, fibre and wrinkle faults
Food applicationsTray, pouch and flow-wrap examples