CAPPING METHOD AND CORRESPONDING STOPPER CAP

摘要

Method for capping a container (4) wherein: a) said container is provided fitted with a neck (40) including at least one screwing thread (410) on its outer annular part (411) and a lip (42); b) said stopper cap (1) is provided having an axial direction (10) and fitted with a sealing means (5), said stopper cap (1) including a metal shell (2) fitted with a metal head (20) and a metal skirt (21) and an insert (3) made of a plastic material fitted with an inner head (30) and an unthreaded inner skirt (31); c) said cap (1) is placed on said neck (40); d) said metal skirt (21) is compressed against said bush (41) exerting a radial compression on said metal skirt (21), such that said metal skirt (21) is swaged and a permanent inner groove (320) is formed on the swaged inner skirt (32); said capping method is characterized in that an axial compression is also exerted during step d) on said cap (1) in such a way that said means (5) for sealing said cap is pinned against said lip (42).