Dual-seal liner and non-removable closure assembly

A dual-seal liner (70) configured to form a non-removable closure assembly between the liner (70), a cap (20) and a container (10), the dual seal liner (70) comprising:

• a disc-shaped body (70) having opposing top and bottom surfaces (73, 74) and a peripheral edge (72) extending in a thickness direction between the top and bottom surfaces (73, 74);
• wherein the top and bottom surfaces (73, 74) have respective inductive heat seal bonding areas (A, C) which are aligned in the thickness direction (LT) for forming a non-removable closure assembly by inductive heat seal bonding to cap (20) and container (10) respectively;
• the dual-seal liner (70) further comprising an upper liner component (90) stacked, in the thickness direction (LT), above a lower liner component (80):
• the upper liner component (90) having an upper liner component ULC dispensing aperture (93) disposed in a central area of the liner (70), and a first inductive heat seal bonding area (A) disposed on a top surface (92) of the upper liner component (90) between the central area and the peripheral edge (72) of the liner (70) for bonding to a further mating inductive heat seal bonding area (A′) on an inner top wall (27) of the cap (20);
• the upper liner component (90) having a second inductive heat seal bonding area (B) disposed on a bottom surface (91) of the upper liner component (90) and lying below the first inductive heat seal bonding area (A) in the thickness direction (LT), for bonding to a mating inductive heat seal bonding area (B′) on a top surface (81) of the lower liner component (80);
• the lower liner component (80) having a dispensing aperture (83) disposed in the central area and a fourth inductive heat seal bonding area (C) disposed on a bottom surface (82) of the lower liner component and lying below the third inductive heat seal bonding area (B′) in the thickness direction (LT), for bonding to a further mating inductive heat seal bonding area (C′) on a top sealing surface (38) surrounding a mouth (M) of container (10);
• the upper liner component (90) having an inductive heating layer (94) for heating one or more of the first, second, third and fourth inductive heat seal bonding areas (A, B, B′, C);
• and further
• a top surface (81) of the lower liner component (80) having a conductive heat bonding area (D), disposed between the lower liner component dispensing aperture (83) and the third inductive heat seal bonding area (B′) for bonding to a mating conductive heat bonding area (D′) on inner top wall (27) of cap (20).