Closure liners
Foam + Foil Liners
Induction-sealed tamper evidence over a resilient foam cushion — for products that need a barrier and a compressible backing.
Representative liner. The exact structure and dimensions are confirmed against your bottle, cap and contents.
Material and structure
A foil sealing layer bonded to a PE foam backing, die-cut to the cap. The foil faces the neck; the foam sits against the cap.
How it seals
Induction heating melts the foil adhesive layer onto the neck finish. The foam stays in the cap as a cushion after the seal is peeled.
Application conditions and limits
For dry and semi-dry products, cosmetics and pharmaceuticals where tamper evidence and a barrier are both wanted. The foil must match the bottle material and the induction equipment; not for metal caps or metal bottles.
Specifications
| Parameter | Value | Unit | Condition or scope |
|---|---|---|---|
| Disc diameter | Cut to the cap and neck finish | mm | From a drawing or a physical sample |
| Foil layer | Selected for the contents | Per the approved specification | |
| Foam backing | PE foam | Thickness confirmed by the trial | |
| Seal type | Induction | Requires an induction sealer |
Customization
Diameter
Cut to the cap — Confirmed from a drawing or sample.
Foil and foam combination
Foil weight and foam thickness — Selected for the contents and the cap torque.
Tab
Half tab or full tab — A handling feature; it does not change the barrier.
Supply scope
Die-cut in our factory from foil and foam roll stock. The foil and foam are checked on arrival and recorded by lot.
Validation
Tell us the bottle material, the cap and the induction equipment. We will send candidate structures for a trial; the seal is confirmed on your line, not from the datasheet.
Your next step
Have a bottle or sealing question in mind?
Start with the application. You do not need to identify the final liner before contacting us. A submitted inquiry is a project inquiry, not a quotation or an order.