Cigarette tube, piano for a cigarette tube, method for forming a cigarette tube, and packaging for multiple cigarette tubes

Cigarette tube comprising a shell with an inhalation end, a lighting end and an internal channel with a center line, wherein the shell comprises a cigarette paper around the center line, wherein the cigarette paper has, in an unrolled configuration:

• a first edge that corresponds to the inhalation end and corresponds to a section of a circumference of a notional first circle having a first center point,
• a second edge opposite to the first edge that corresponds to the lighting end and corresponds to a section of circumference of a notional second circle having a second center point that coincides with the first center point,
• a longitudinal curved third edge between the first edge and the second edge, and
• a longitudinal fourth curved edge between the first edge and the second edge, and
• wherein the cigarette paper has, when in a rolled configuration, meeting edges that overlap longitudinally and form a seam of the shell to provide overlapping edges, wherein the seam has in the direction of the center line between its opposite ends a helicoid curvature around the center line, and the overlapping edges overlap each other over a distance transverse to the overlapping edges of at least 2 millimeters and no more than 3 millimeters.