Pharmaceutical overwrapping applies film around a finished carton or group of cartons. Its specification may address handling, bundle retention, appearance or a visible opening feature. The required function determines the film, closure design and inspection method.
Place the film in the complete packaging system
The medicine remains inside its primary package, such as a blister or bottle, with the carton and overwrap outside it. An outer component can still contribute to product protection when it has a specified protective function. FDA’s container-closure guidance recognises that the complete system can include such secondary components.
| Intended function | What to specify | What to examine |
|---|---|---|
| Carton handling | Fit, folds and closure | Loose film, scuffing and handling damage |
| Bundle retention | Pack count and arrangement | Bundle stability through the handling route |
| Opening feature | Tear strip or opening method | Accessibility and repeatable opening |
| Tamper-evident feature, where applicable | Indicator, identifying characteristic and labeling | Visible evidence after access or feature removal |
Assess tamper evidence as a designed feature
For US retail OTC human drug products covered by 21 CFR 211.132, the rule addresses indicators or barriers that show visible evidence of interference, their durability during normal handling, and labeling identifying the feature. Its scope includes specific exceptions, so applicability must be checked for the product.
A transparent film wrap by itself does not demonstrate those properties. The assessment should examine what a user sees after the feature is breached or removed and whether the required identifying statement remains available. Keep child-resistance requirements separate from this tamper-evidence assessment.
Connect machine settings with finished-pack checks
Record the carton dimensions, film specification, closure method and operating settings used in a trial. Examine the completed pack for the agreed fit, closure and opening characteristics. Include downstream handling so that a pack passing directly at the machine can also be assessed after movement through the line.
Qualification of packaging equipment is addressed in EU GMP Annex 15, section 7. Use the approved product and pack requirements to choose the critical settings and acceptance criteria for the operation.
See the packaging-layer guide for component roles and the cartoning guide for checks before film is applied.
