Ring pull closure liner

Abstract

A ring pull closure liner (50; 100; 100’; 100’’; 100’’’) includes: a functional layer (1; 1’), a release layer (2) and a strong adhesion layer (6), an electromagnetic induction heating layer (3) and a sealing layer (4). The functional layer (1; 1’) of the ring pull closure liner (50; 100; 100’; 100’’; 100’’’) is provided with a main cutting line (9a) and a tearing line (1122a0). The main cutting line (9a) divides the ring pull closure liner (50; 100; 100’; 100’’; 100’’’) into an outer ring (111) and an inner ring (112). The inner ring (112) includes a lifting part (1122), a lifting neck (1123) and a hollow-out area (1121). The lifting neck (1123) is connected with the bottom end of the lifting part (1122). The hollow-out area (1121) is formed by cutting a secondary cutting line (9b), the hollow-out area (1121) is located at a periphery of the lifting part (1122), and the hollow-out area (1121) is connected with two sides of the lifting neck (1123).