Abstract: The invention relates to a cigarette tube (1) comprising a shell (2) with an inhalation end (8), a lighting end (9) and an internal channel (3) with a center line (Q), wherein the shell (2) comprises a cigarette paper (5) around the center line (Q), wherein the cigarette paper (5) has meeting overlapping edges that form a seam (4) of the shell (2), wherein the seam (4) has in the direction of the center line (Q) between its opposite ends a helicoid curvature around the center line (Q).

Abstract: The invention relates to a roof forming element for a roof, comprising a roof plate, a beam integral with the roof plate, such that the integral combination of the roof plate and the beam has an L-shaped cross-section, a cover, and coupling means for coupling the roof forming element to a further, neighbouring element. The roof forming element, at least in a mounted condition of a plurality of such elements, is configured such that the second longitudinal side of the element is arranged to be supported by the first longitudinal side of a further, neighbouring one of said elements, so that the beam of the further roof forming element also supports the roof plate of the roof forming element, and so that the respective roof plate elements of said roof forming element and further roof forming element are flush with respect to each other.

Abstract: The invention relates to a roof forming element for a roof, comprising a roof plate, a beam integral with the roof plate, such that the integral combination of the roof plate and the beam has an L-shaped cross-section, a cover, and coupling means for coupling the roof forming element to a further, neighbouring element. The roof forming element, at least in a mounted condition of a plurality of such elements, is configured such that the second longitudinal side of the element is arranged to be supported by the first longitudinal side of a further, neighbouring one of said elements, so that the beam of the further roof forming element also supports the roof plate of the roof forming element, and so that the respective roof plate elements of said roof forming element and further roof forming element are flush with respect to each other.

Abstract: The invention relates to a filter for application in a cigarette tube. The invention also relates to an assembly of a cigarette tube and at least one filter according to the invention received in the cigarette tube. The invention further relates to a cigarette, in particular a “joint”, based on such an assembly. The invention also relates to a blank for the purpose of manufacturing a filter according to the invention. The invention moreover relates to a method for manufacturing a filter according to the invention.

Abstract: The invention relates to a filter for application in a cigarette tube. The invention also relates to an assembly of a cigarette tube and at least one filter according to the invention received in the cigarette tube. The invention further relates to a cigarette, in particular a “joint”, based on such an assembly. The invention also relates to a blank for the purpose of manufacturing a filter according to the invention. The invention moreover relates to a method for manufacturing a filter according to the invention.