Container with a cross-section which changes between a square contour and a rectangular contour

Container (1) made of plastic material, comprising a body (2) that extends along a main axis (X), a shoulder (3) that forms an extension of the body (2) from an upper side, and a bottom (5) that forms an extension of the body (2) from a lower side, with the body comprising four faces (9, 10), namely a first pair of faces (9) that, in cross-section, are parallel to one another, and a second pair of faces (10) that, in cross-section, are parallel to one another and perpendicular to the faces (9) of the first pair, with the faces (9) of the first pair being separated, in the cross-section in the vicinity of the shoulder (3) as well as in the vicinity of the bottom (5), by a distance D, and the faces (10) of the second pair being separated, in the cross-section in the vicinity of the shoulder (3) as well as in the vicinity of the bottom (5), by a distance D′ that is equal or approximately equal to the distance D, with the values of D and D′ being such that:

• 0.95
• <
• D
• ′
• D
• <
• 1.05
• with this container (1) being characterized in that in the cross-section in a median zone of the body (2), the faces (9) of the first pair are separated by a first distance D1 and the faces of the second pair (10) are separated by a second distance D2 that is different from the distance D1.