Confirm presence
Remove containers missing a required tamper or induction component.
Tamper-evident & induction seals
Verify tamper-evident features and induction-seal presence
Confirm that the expected closure feature is present and correctly positioned before products move to final packing or dispatch.
The inspection challenge
Turn closure presence into a positive, recorded check
Cap colour alone cannot confirm every tamper or induction feature. The inspection method is selected around what can be seen, sensed or measured at the required line speed and where the feature sits within the closure assembly.
- Tamper-band presence and continuity
- Induction-foil presence detection
- Missing or displaced membrane checks
- Cap-to-container alignment
- Correct closure type or colour
- Reject confirmation and bin monitoring
Production outcomes
Designed to make every decision useful
Avoid false assurance
Choose a sensing method that sees the actual feature—not just the outer cap.
Integrate cleanly
Fit the station around existing capper, sealer, conveyor and line-control signals.
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 detailsContainer typesBottles, jars, tubs and rigid containers
Possible methodsMachine vision, contrast sensing, thermal signature or foil-capable sensor
Typical checksPresence, position, continuity, colour, height and closure match
PlacementAfter capping/induction sealing and before labelling or case packing where practical
Through-cap induction inspection
Check the actual foil or heat signature—not only the cap
A correctly fitted outer cap does not prove that an induction liner is present or that the sealing process created the intended bond. Depending on cap material and line position, the application may use a foil-capable sensor, thermal imaging through the closure, or a visible check before the cap obscures the liner.
The chosen method must be trialled against missing, displaced, partial and known failed seals at the required line speed. Where hidden bond integrity has no detectable signal, a complementary physical test may still be required.
Review your bottle and cap samplesBefore cappingVisible liner or membrane presence and position where accessible
After cappingFoil-capable sensing or through-cap thermal signature where proven
Closure checksCap height, skew, type, ring and tamper-band features
Line responseReject, confirm, alarm, stop and record
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.
Can a camera see an induction foil through a cap?
Not always. Depending on cap material and line layout, a dedicated foil-presence sensor or thermal method may be more appropriate than visible imaging.
Can you inspect tamper bands on different bottle sizes?
Yes, if the mechanical design and field of view cover the format range. Product recipes set the expected band position and tolerances.
Can the system stop the line as well as reject?
Yes. Controls can be configured to reject single failures, stop after a defined sequence, or alarm on reject-bin and confirmation faults.
Application guidance
Choose the sensing method around the hidden foil
Cap material, foil position, thermal timing and line layout determine whether vision, thermal or a dedicated sensor is appropriate.
Cost and scopeWhat changes an engineered quotation