Child-resistant closure and container package

A closure that includes an integrally molded one-piece plastic body having:

• (a) a base wall, (b) a peripheral skirt with at least one continuous internal thread and plural lugs on an upper surface of said thread, each said lugs having an angulated surface sloping toward an end of said thread remote from said base wall and a circumferentially facing radially extending abutment surface on an end of said lugs facing an opposing end of said thread, (c) a spring element for engagement with a container finish to bias said lugs into opposing pockets on the container finish, and (d) a liner captured between said thread and said spring element, said liner including sequential layers of cellulose, wax, metal and plastic, with said wax layer evaporating and said plastic layer melting upon application of induction current to said metal layer.

A child-resistant closure and container package that includes:

• a container having a finish with at least one continuous external thread and pockets on an undersurface of said external thread that do not extend axially through said thread such that an upper surface of said external thread is continuous throughout said external thread,
• a closure of one-piece molded plastic construction having a base wall, a peripheral skirt with at least one continuous internal thread and lugs on said internal thread for receipt in said pockets, and a spring element for engagement with said finish to bias said closure away from said finish and urge said lugs into said pockets, and
• a liner disk loosely captured by said at least one internal thread within said closure adjacent to said base wall and adapted to be urged by said spring element into engagement with said finish, said liner disk including a base with metal and plastic layers adapted for induction sealing securement to said finish such that, upon removal of said closure, said metal and plastic layers remain secured to said finish and said liner base is removed with said closure.