FIELD: storage.
SUBSTANCE: present invention relates to topper (2) for container (1) having upper surface (10), wherein topper (2) including: a body adapted to engage upper surface (10) of container (1), and movable perforation platform (3) having at least, one protruding perforating element (4a, 4b), the perforation platform (3) being pushable with respect to the body from a resting position to a working position, in which the perforating element (4a, 4b) perforates the upper surface (10) of the container (1), wherein the perforation platform (3) presents in resting position a first orientation and presents in working position a second orientation, the first and the second orientation differing by an angle of less than 30°.
EFFECT: present invention also proposes an assembly, and a method of using the assembly.
14 cl, 15 dwg
