| abstract |
A container assembly (40), comprising: a container (41), having a first end (43), a second end (42), and a side wall (45) extending between them and defining an interior of the container (46), the container defining a longitudinal axis (49) of the container; a first closure (48) that seals the first end (43) of the container; and a second closure (60) that seals the second end (42) of the container; characterized in that the package assembly further comprises: a first mixing element (63) projecting inside the container, the first mixing element extending from a portion of the first closure, such that, with the container rotated around of the longitudinal axis of the container, the first mixing element forms at least one vortex (w, x) that effects the mixing of a first substance coated inside the container and a second substance provided inside the container; and a second mixing element (64, 70, 80, 90) projecting into the container, the second mixing element extending from a portion of the second closure, such that, with the container rotated about the longitudinal axis of the container, container, the first mixing element and the second mixing element form the at least one vortex that effects the mixing of the first substance and the second substance within the container assembly. |