A closure device for a paper or paperboard-based package, the closure device comprising a pour spout and a cap, the pour spout having a longitudinal centre axis (A L) defining an axial direction (z), a circumferential direction (c) and a radial direction (r) of the pour spout, the pour spout comprising: - an annular longitudinal neck portion extending along the axial direction (z) from a first axial end to a second axial end in a dispensing opening, the neck portion further comprising a plurality of external threads, occupying, in the axial direction (z) a region extending between a first plane (P 1) and a second plane (P 2), wherein the second plane (P 2) is arranged between the first plane (P 1) and the second axial end, - an annular flange portion for attaching the closure device to the package, the annular flange portion extending in the radial direction (r) outwardly from the first axial end of the neck portion; the cap comprising: - a lid portion comprising an annular longitudinal skirt having a plurality of internal threads configured to releasably interact with said external threads; - a retainment portion being rotatably retained around said neck portion; - a hinge portion permanently connecting the lid portion to the retainment portion, the hinge portion having a pivot axis (A P) about which the lid portion is pivotally movable, the lid portion being operable between a first position in which the lid portion sealingly covers said opening of the pour spout, a second position in which the lid portion non-sealingly covers the opening, and a third position in which the lid portion is located at least partly at a side of the opening, characterized by the pivot axis (A P) being located between the first plane (P 1) and the second axial end of the neck portion. the closure device comprising a pour spout and a cap, the pour spout having a longitudinal centre axis (A L) defining an axial direction (z), a circumferential direction (c) and a radial direction (r) of the pour spout, the pour spout comprising: - an annular longitudinal neck portion extending along the axial direction (z) from a first axial end to a second axial end in a dispensing opening, the neck portion further comprising a plurality of external threads, occupying, in the axial direction (z) a region extending between a first plane (P 1) and a second plane (P 2), wherein the second plane (P 2) is arranged between the first plane (P 1) and the second axial end, - an annular flange portion for attaching the closure device to the package, the annular flange portion extending in the radial direction (r) outwardly from the first axial end of the neck portion; - an annular longitudinal neck portion extending along the axial direction (z) from a first axial end to a second axial end in a dispensing opening, the neck portion further comprising a plurality of external threads, occupying, in the axial direction (z) a region extending between a first plane (P 1) and a second plane (P 2), wherein the second plane (P 2) is arranged between the first plane (P 1) and the second axial end, - an annular flange portion for attaching the closure device to the package, the annular flange portion extending in the radial direction (r) outwardly from the first axial end of the neck portion; the cap comprising: - a lid portion comprising an annular longitudinal skirt having a plurality of internal threads configured to releasably interact with said external threads; - a retainment portion being rotatably retained around said neck portion; - a hinge portion permanently connecting the lid portion to the retainment portion, the hinge portion having a pivot axis (A P) about which the lid portion is pivotally movable, - a lid portion comprising an annular longitudinal skirt having a plurality of internal threads configured to releasably interact with said external threads; - a retainment portion being rotatably retained around said neck portion; - a hinge portion permanently connecting the lid portion to the retainment portion, the hinge portion having a pivot axis (A P) about which the lid portion is pivotally movable, the lid portion being operable between a first position in which the lid portion sealingly covers said opening of the pour spout, a second position in which the lid portion non-sealingly covers the opening, and a third position in which the lid portion is located at least partly at a side of the opening, characterized by the pivot axis (A P) being located between the first plane (P 1) and the second axial end of the neck portion.