Closure assembly comprising a cap with an integrated tamper-evident ring member

A closure assembly comprises an article (10, 10′, 10″, 10) and a cap (40, 40′, 40″, 40′″, 440) provided with an integrated tamper-evident ring member (50, 50′, 50″, 450). The article further comprises a circumferential flange structure (20) with an annular flange portion and a peripheral protective rim portion (25) so that the top face (21a) of the flange portion and the protective rim define an annular recess (30) around the neck (14). The tamper-evident ring member is integrally formed to the lower edge of the skirt (42) of the cap via one or more breakable bridges (70). The ring member comprises an annular ring member flange portion (51) that has a top face (51a) and a bottom face (51b). Multiple hook members (53) are integrally formed to the bottom of the ring member flange portion, and the annular flange portion on the neck is provided with multiple hook member passages (1S). Each hook member passage is adapted to receive a hook member when the cap with the integrated tamper-evident ring member is axially mounted on the neck by means of an axial securing motion, wherein the hook portion (55) of each hook member snaps underneath the bottom face (21b) of the annular flange portion on the neck of the article. The periphery of the annular flange portion of the ring member is shaped to fit within the protective rim portion and the rim portion obstructs lateral access from outside to the interface between flange portions.