Method, tool and assembly for tightly closing a receptacle, and tightly closed receptacle

An assembly comprising a tool for closing an opening (2) of a receptacle (1), having receptacle side wall inner side (5) comprising a vertically extending portion, and a shaft (21), the tool (10) comprising:

• (a) a rotating tool plate (12) that is adapted to be introduced in an opening (2) of the receptacle (1) to be closed;
• (b) at least one roll (11) having a constant diameter over a height thereof and being arranged on the rotating tool plate (12), wherein from a starting position (13), the at least one roll (11) being deflectable radially outwards to a closing position (14) and returnable to the starting position (13), to provide a radial force to a closure rim (4) of a closure (3) by the at least one roll (11) with the constant diameter of the height for a limited period of time;
• and
• (c) the closure rim (4) being arranged between the at least one roll (11) having the constant diameter and the vertically extending portion of the receptacle side wall inner side (5) and the closure rim contacting the vertically extending portion of the receptacle side wall inner side, when the radial force is applied;
• wherein the shaft (21) is connected to the tool (10) to transmit a torque to the tool (10).

A method of closing an opening (2) of a receptacle (1) having a receptacle side wall inner side (5) with a vertically extending portion and a receptacle interior (6), the method comprising the following steps:

• (a) providing a receptacle (1) having at least one opening (2) to be closed;
• (b) introducing a closure (3) into the opening (2) of the receptacle (1), the closure (3) having a closure rim (4) directed away from the receptacle interior (6), and an axial basic shape of the closure rim (4) corresponds to an axial basic shape of the receptacle (1);
• (c) introducing a rotatable tool (10) into a space, open on one side thereof and delimited by the closure (3);
• (d) deflecting at least one rotatable roll (11) having a constant diameter over a height thereof radially outwards, to-contact engaging the closure rim (4) of the closure (3);
• and
• (e) rotating, about a longitudinal axis, the rotatable tool (10), with the at least one rotatable roll (11) having the constant diameter of the height thereof engaging the closure rim (4), relative to the receptacle (1), or vice versa, and attaching the closure rim (4) to the vertically extending portion of the receptacle side wall inner side (5), to close the opening (2).

A method of closing an opening (2) of a receptacle (1) having a receptacle inner side (5) and a receptacle interior (6) encompassed by the inner side as an inner surface, the method comprising the following steps:

• (a) the receptacle (1) providing at least one opening (2) to be closed;
• (b) introducing a closure (3) into the opening (2) of the receptacle (1), the closure (3) having a closure rim (4) directed away from the receptacle interior (6) and a closure panel (3a), whose circumferential basic shape corresponds to a circumferential basic shape of the receptacle (1) in at least an upper section thereof;
• (c) axially introducing a closure tool (10) into a space open on one side thereof and delimited by the closure panel (3a) on an opposite side thereof;
• (d) outwardly deflecting at least one rotatable roll (11), wherein the at least one rotatable roll has a cylindrical shape with a constant diameter over its entire height, engaging the closure rim (4) of the closure (3) with the cylindrical shape;
• and
• (e) applying a rotating movement of the closure tool (10) and the at least one rotatable roll (11) relative to the receptacle (1), to attach the closure rim (4) to the receptacle inner side (5), tightly closing the opening (2).