These three are often compared as if they were interchangeable. They are not. Each solves a different problem.
The comparison.
| Method | What it does | Best for | What it does not do |
|---|---|---|---|
| Induction foil | Heat bonds a foil to the neck | Tamper evidence and a barrier | It needs an induction sealer and a foil-compatible bottle |
| Pressure-sensitive | Cap torque activates the seal | Lines without induction, small runs | It is not a foil barrier; the adhesive must suit the contents |
| Vented | Lets gas or pressure equalise | Products that build pressure | It is not a universal leak-proof seal |
How to choose.
Start with the contents and the line. If the product builds pressure, a vented structure is a candidate. If the line has no induction, pressure-sensitive is a candidate. If the buyer needs tamper evidence and a barrier, induction is a candidate — and then the bottle and the cap have to allow it.
In every case, the candidate is confirmed by a sample and a trial. The table is a map, not a decision.