Eco-designed closing device with high opening force

摘要

The present invention relates to a female closure element (6) comprising a support web (7) and a female section (10) connected to the support web (7), - the female section (10) having a U-shaped section comprising a base ( 11) connected to the support web (7) and two arms (13) extending from the base (11), - at least one of the arms (13) of the female profile (10) comprising an extra thickness (20) at the level of its external face (15) so that a ratio between the maximum width (Lmax) and the minimum width (Lmin) of the female profile (10) is greater than or equal to 1.10, preferably between 1.20 and 1.50. Figure for the abstract: Fig. 2