Define the fault
Agree the pack, line speed, critical seal area and pass/fail tolerance.
Seal inspection systems UK
Stop seal faults leaving your production line.
Inspect heat seals, tray film, pouch seals, tamper features and closures—then reject failed packs automatically against your programmed criteria.
100% in-line inspectionVision + sensing selected by applicationVerified reject integration
Heat sealsTray lidding filmPouches & sachetsInduction sealsCaps & closuresAutomatic reject
Inspect what matters
One missed seal fault can become a costly downstream problem.
Inline seal integrity inspection can check every presented pack at production speed, reducing the gaps left by periodic manual sampling.
Oxford Vision Systems combines product handling, visible-light cameras, thermal imaging or other suitable sensing, software and reject controls into one production-ready inspection point. The system is designed around your real packs, expected defects and acceptable process variation.
Vision, thermal inspection and leak testing answer different quality questions. We help define which method—or combination—provides evidence for the failure modes you need to control.
Read the seal inspection method guide
Every packRepeatable inspection against programmed criteria
Designed around the real defect
See more than simple pack presence.
Purpose-designed lighting reveals the critical seal edge. Image processing separates true faults from film texture, artwork movement and acceptable production variation.
- Contamination in the seal path
- Folded, wrinkled or incomplete seals
- Missing or displaced lidding film
- Cap, closure and tamper-feature faults
Inspection capabilities
Seal and closure checks built for production
Choose a focused station or combine several inspections where line access, resolution and cycle time permit.
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Heat-seal inspection
Detect incomplete, inconsistent and visibly failed seal regions.
Explore systemTray-seal inspection
Check lidding-film presence, position, folds and perimeter defects.
Explore systemPouch-seal inspection
Inspect top, side and end seals on flexible packs and sachets.
Explore systemSeal contamination
Identify visible product, powder, liquid or particles in the seal path.
Explore systemTamper-evident seals
Verify bands, membranes and required tamper features are present.
Explore systemInduction-seal presence
Use suitable vision, sensing or thermal methods to confirm foil presence.
Explore systemCap & closure integrity
Find missing, high, skewed, damaged or incorrect closures.
Explore systemAutomatic rejection
Track and remove failed packs with confirmation and fail-safe monitoring.
Explore systemA 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.
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.
Complete line integrationExplore failed-pack rejection
The camera is only one part of a dependable system.
Inspection performance depends on stable product presentation, controlled lighting, precise tracking and a reject sequence designed for the pack.
InputGood packs, known failures and edge cases
DecisionRecipe-controlled acceptance criteria
ActionReject, confirm, alarm and record
Built for your production environment
Flexible inspection across packaging sectors
Hygienic, guarded and line-integrated solutions for food, beverage, pharmaceutical, healthcare, cosmetics, chemical and general manufacturing applications.
New buyer resource
Choose the inspection method before choosing the camera
Our practical guide compares machine vision, thermal seal inspection and leak testing. It maps common packaging faults to suitable methods and covers MAP/CAP packs, 100% inspection, retrofit surveys, validation, data and reject verification.
Read the seal inspection guideCompareVision vs thermal imaging vs leak testing
DefineDetectable defects, pack formats and acceptance criteria
IntegrateSpeed, lanes, PLC, tracking and automatic rejection
ValidateRepresentative samples, FAT, SAT and production records
Practical decision guide
Build a seal challenge library that keeps the method boundaries clear
Label each trial pack with the question it is intended to test. A visible fold, an abnormal thermal pattern and a known integrity failure are useful examples for different purposes; do not assume that every method should respond to every example in the same way.
Keep the reference decision alongside the sample
Record format, film or tray identity, product condition, fault location and the responsible team’s classification. Include accepted packs close to the visual boundary as well as clear faults. Where a separate test establishes a property, retain that result and its method with the sample record instead of inferring it from appearance.
Consider whether the challenge changes with time
A reference image remains a record of one observation, while a physical pack may change as it cools, dries, deforms or is handled. State the condition and inspection timing used for the comparison. Replace or reclassify an altered sample through the agreed quality process rather than treating it as an unchanged reference indefinitely.
Cross the sample library with real line conditions
Include the permitted pack orientation, spacing and speed changes. Test a required seal region that is hidden or outside the view, and record an unavailable inspection separately from a passed check. Keep the pack reference associated with the downstream reject or hold action.
Use the library to review a proposed adjustment
After a change to lighting, recipe or presentation, challenge both the known faults and the accepted boundary samples. Record which result improved and whether another result worsened. The seal defect guide and acceptance checklist provide routes for agreeing the sample classes and production evidence.
Practical answers
Seal inspection questions
Clear answers before you invest in an in-line inspection project.
What types of seal can you inspect?
Systems can be engineered for heat seals, tray lidding film, pouch and sachet seals, tamper-evident features, induction-foil presence and cap or closure integrity.
Can the system reject failed products automatically?
Yes. We can integrate a reject mechanism, product tracking, confirmation sensing and fail-safe monitoring around the pack and line requirements.
Will it work with our existing packaging line?
Most projects can be integrated with an existing conveyor or packaging machine, subject to a site survey covering access, presentation, line controls, guarding and available space.
How do you prove the inspection will work?
We start with representative good packs, known failures and normal production variation. Trials establish the sensing method, image quality and realistic acceptance criteria before final engineering.
Can the system save inspection images and data?
Yes, where specified. Options include fault images, production counts, fault categories, recipe records and connections to line or factory data systems.
When is AI vision useful for seal inspection?
AI can help when acceptable packs and genuine defects vary in appearance or fixed rules become too complex. It should be selected only when representative trials show a practical improvement.
What affects the price of an inline seal inspection system?
Cost is shaped by the defect, pack range, line speed, lanes, sensing method, handling, reject controls, data, guarding, installation and acceptance requirements.
Which seal-inspection method answers your quality question?
A visible seal fault, an abnormal temperature pattern and a leaking finished pack are different observations. Choose the method from the required decision and prove its limits on the actual packaging.
Visible folds, position and contamination
Assess camera access and contrast for the specific seal region. A transparent film, printed film and reflective pack may need different imaging arrangements. Use the defect guide to organise labelled samples, including acceptable variation and marginal faults.
Thermal evidence after sealing
A thermal inspection examines the heat pattern under the agreed process conditions. Trial the timing and presentation with real packs and production variation. The thermal inspection guide explains why this evidence must not automatically be described as a leak or seal-strength result.
A requirement about finished-pack leakage
Specify the leak-test question and acceptance method separately from appearance checks. Some projects need complementary methods. Use the seal-integrity testing guide with the responsible packaging team to define what each result can establish.
Every presented pack still needs a valid result
Define the response when a pack is missing from the expected view, a region is obscured or the inspection cannot decide. Treat invalid results explicitly and prove that the correct pack follows the required reject or hold route.
Agree evidence before the trial
Record sample identity, fault category, format, speed, viewing coverage and result. Separate missed faults from rejected good packs and include the complete reject sequence. The acceptance checklist helps turn an attractive demonstration into a documented project decision.