Glass Bottle Induction Seal Liners
Induction foil liners engineered for glass — wax-bond hot-melt structures that weld to the glass rim for a tamper-evident, freshness-sealing membrane.
How it seals
Induction sealing is usually associated with plastic bottles, but glass packs take a dedicated structure. Polymers seal with a matched heat-seal layer; glass needs a wax-bond (hot-melt) build: an aluminium-foil membrane laminated to a paperboard backing, where the induction field melts the wax layer and bonds the foil to the glass rim.
The build behaves like a two-piece liner: on first opening the foil membrane peels off the glass, leaving a clean, visible tamper-evidence line, while the paperboard backing ring stays inside the cap and keeps resealing the jar between uses. Food-contact grades are standard for this family.
Because glass rims vary — thread finishes, moulding seams, rim width and cap torque all differ between jars — we cut the liner to your exact mouth diameter and validate the wax bond on your own jars before volume runs. Send us a jar and cap and we return sealed samples.
Specification
| Sealing method | Induction heat sealing — wax-bond (hot-melt) structure for glass |
|---|---|
| Build | Paperboard-backed aluminium-foil membrane (two-piece behaviour) |
| Container | Glass bottles and jars |
| Diameter | 9–182 mm, custom die-cut shapes |
| Branding | Surface printing, steel-stamp embossing |
| Best for | Food and condiments — sauces, honey, jam, spices and other glass-packed products |
| Food contact | Food-contact grades standard |
| MOQ | Varies with diameter and structure — send your container size for exact minimums |
| Packaging | PE bag inner, thickened corrugated carton outer (export packing) |
| Storage | −20 °C to 50 °C, away from direct sunlight |
| Lead time | Typically 7 days after order confirmation |
Wax-bond build — foil welds to the glass rim, paperboard stays in the cap
Typical applications
Where this family is specified
| Condiments & sauces | Tamper-evident foil seals for glass sauce and condiment bottles |
|---|---|
| Honey & jam | Freshness sealing with a clean peel and a resealing board backing |
| Spices & seasonings | Moisture and aroma protection for glass spice jars |
| Dry & powdered foods | Food-contact foil membranes for glass packs |
| Other glass-packed foods | Any glass jar or bottle mouth from 9 to 182 mm |
Choosing the right build
Glass sealing lives and dies by the rim: moulding seams, rim width and cap torque change how the wax bond wets the surface. Send us your jar and cap (or a rim drawing with the neck finish) and we cut samples in your diameter for a seal test on your own line.
Vinegar-based, acidic or oily fills can interact with the wax layer over time — as with all our structures, aggressive contents are validated by test against your actual product before we confirm the build-up.
Other liner families
Not sure which family fits your pack?
Tell us what you fill, what it goes into and how you seal it today. Our engineers will come back with a matched structure, a datasheet and sample liners.