Plastic spout and pouch packaging

A spout adapted to be heat sealed in a non-bonded region between opposed first and second walls of a pouch, comprising a plastic spout body that has a passage for filling and/or discharging a substance into or out of the pouch,

• wherein the spout body comprises:
• an attachment portion having a first vertical plane of symmetry, a vertical first sealing wall, and an opposed vertical second sealing wall, and with a transverse wall which is integral with an upper edge of the first and second sealing walls, wherein the first sealing wall and the second sealing wall each depend from said transverse wall and each have a bottom edge remote from the upper edge,
• wherein each sealing wall has an outer sealing surface, wherein the outer sealing surfaces of the sealing walls are to be heat-sealed to one of the respective walls of the pouch,
• wherein each sealing wall is, seen in a bottom view of the attachment portion, composed of a first rectilinear portion, a central curved portion, and a second rectilinear portion,
• wherein the second rectilinear portion of the first sealing wall is integrally connected to the first rectilinear portion of the second sealing wall at a first pointed end of the attachment portion to define an acute angle between the two portions,
• wherein the second rectilinear portion of the second sealing wall is integrally connected to the first rectilinear portion of the first sealing wall at a second pointed end of the attachment portion to define an acute angle between the two portions,
• wherein the transverse wall has an opening therein,
• wherein the spout body further comprises:
• a tubular neck having a bore that adjoins the opening in the transverse wall, which tubular neck is integral with and extends upwards from the transverse wall, which tubular neck together with the opening in the transverse wall forms the passage,
• wherein the attachment portion further comprises:
• at least one first stabilizing rib extending between connection points to the second rectilinear portion of the first sealing wall and to the first rectilinear portion of the second sealing wall, and
• at least one second stabilizing rib between connection points to the first rectilinear portion of the first sealing wall and to the second rectilinear portion of the second sealing wall,
• wherein, seen in a bottom view of the attachment portion,
• the at least one first stabilizing rib is, between respective connection points, curved toward the first pointed end, and
• the at least one second stabilizing rib is, between respective connection points, curved toward the second pointed end.