Vaassen Flexible Packaging’s (VFP) new induction seal liners challenge the traditional foil-based four layer laminate seal, which is comprised of PET, foamed PE, aluminium and a seal layer, by replacing PET and PE with a single layer of PET 50.
The foil acts as an inlay to the screw cap of sauce bottles to ensure pack integrity, tamper evidence and product freshness. Once the bottle is filled, the screw cap is applied and by induction sealing, the aluminium foil-based liner is sealed to the bottle.
The PET 50 provides sufficient isolation to avoid melting of the screw cap and provides rigidity – similar to that of the foam layer of traditional liners.
VFP’s three-ply PET50, aluminium, and seal layer membrane cuts out one step in the production line to speed up the product to market process, making it a more efficient alternative to sauce and condiment packaging.