Mechanism
Define the visible sign of disturbance: a torn seal, a mark or a changed opening condition. Review the label, adhesive, surface, placement and closure together to assess that response.
Surface
Apply a representative sample to the real finished surface, including any coating or texture. Review application, first opening and the appearance after disturbance. Describe how the end user should interpret the visible indicator.
Boundary
Keep tamper evidence separate from child resistance, theft prevention and other protection requirements. One visible-opening feature does not prove all of these. Record the intended mechanism and agreed checks so the claim remains tied to the actual design.
Related specification support
Closures & Handles
Select opening and carrying details around real handling needs.
Define the visible sign of first opening
For a label crossing a carton opening, describe what should happen when the carton opens: tearing, delamination or another agreed visible response. Then test the actual label and coated carton together.
Opening indication and surface response
| Check | What to do | Why it matters |
|---|---|---|
| Mechanism | State the expected evidence. | A seal label without a defined response is an incomplete brief. |
| Surface | Use the actual pack material and finish. | Adhesion changes with the application surface. |
| Opening | Try the intended customer action. | Evidence of opening is different from preventing access. |
Record the actual product, material or file version used for the comparison. Identify what remains undecided and which sample or document can resolve it.
Discuss tamper-evidence review
Describe the product, proposed closure and specifications. Include a sample or file showing the intended evidence of opening.
Tamper Evidence in Packaging FAQ
No. Those are different requirements. A tamper-evident feature should not be described as a child-resistant closure without separate applicable evidence.
Apply a representative seal to the actual finished packaging surface, including its coating or texture. Check application, first opening and the visible result after disturbance against the agreed indicator.
Evidence of opening and prevention of access are different requirements. Define the visible response the label should produce; do not treat that feature alone as proof of theft prevention or other protection.