Packaging blank for forming a package and package formed from a packaging blank

Packaging blank for forming a package filled with a pourable product comprising:

• two longitudinal boundary edges spaced apart from one another along a first direction transversal to a longitudinal axis of the packaging blank;
• and
• two transversal boundary edges spaced apart from one another along a second direction parallel to the longitudinal axis;
• and
• a top crease pattern configured to form a top portion of the package;
• wherein the top crease pattern comprises at least a first transversal crease line and a second transversal crease line extending transversally to the longitudinal axis of the packaging blank, the first transversal crease line being interposed between one respective transversal boundary edge and the second transversal crease line;
• wherein the second transversal crease line comprises at least two lateral portions opposed to one another and transversal to the longitudinal axis, at least a central portion and at least two inclined portions inclined with respect to the longitudinal axis and each one extending between one respective lateral portion and the central portion;
• wherein the top crease pattern comprises one or more main inclined crease lines being inclined with respect to the longitudinal axis and one or more auxiliary crease lines extending transversally to the main inclined crease line and/or parallel to the longitudinal axis and/or parallel to the longitudinal boundary edges and being interposed between one respective main inclined crease line and one respective longitudinal boundary edge;
• wherein each lateral portion defines a respective imaginary endless line comprising the respective lateral portion and the respective inclined portion defines an imaginary inclined endless line comprising the respective inclined portion and intersecting the respective imaginary endless line at an intersection point;
• wherein each main inclined crease line extends between the first transversal crease line and the second transversal crease line intersecting the respective intersection point;
• wherein each auxiliary crease line extends between the first transversal crease line and the second transversal crease line without intersecting the second transversal crease line, the imaginary endless line, the respective intersection point and the respective main inclined crease line.