The present invention relates to a single use, non-expandable, disposable container for holding a liquid, in particular a body liquid, the container comprising: —a bottom wall, —a circumferential side wall which extends in an upward direction from the bottom wall, wherein the circumferential side wall defines an upper opening ( ) at an upper end ( ) of the container, —a first folding flap and a second folding flap which are connected via a respective first folding line and a second folding line to opposed sections of an upper edge of the circumferential side wall, wherein the first and second folding flaps are foldable between an open position and a closed position, wherein in the open position of the folding flaps the circumferential side wall and the folding flaps taper outwardly in an upward direction, allowing the container to be nested, and wherein the folding flaps have a varying flap width, wherein the flap width reaches a maximum at a central portion of the folding flaps, and wherein said maximum flap width is smaller than a bottom width of the bottom wall, wherein during the folding of the folding flaps the folding flaps are deformed, wherein when seen in front view, during the folding of the folding flaps from the open position to the closed position, the circumferential side wall deforms from the outwardly tapering form to an inwardly tapering form.

A pouch (10) comprises a flexible bag (12) having an opening (12a) at one end, and a safety valve arranged inside the bag (12) to substantially prevent the content of the bag (12) leaving through the opening (12a). The valve comprises a first pair of sheets (22) and a second pair of sheets (24) that are bonded together locally at a plurality of spaced-apart primary bonding points (25), and a third pair of sheets (26), the first, second, and third pairs of sheets (22, 24, and 26) being bonded together locally at a plurality of spaced-apart secondary bonding points (27). The distance between the primary bonding points (25) and the distal end of the sheets of the second pair of sheets (24) varies along a transverse axis (Dt) of the bag (12).

A pouch (10) comprises a flexible bag (12) having an opening (12a) at one end, and a safety valve arranged inside the bag (12) to substantially prevent the content of the bag (12) leaving through the opening (12a). The valve comprises a first pair of sheets (22) and a second pair of sheets (24) that are bonded together locally at a plurality of spaced-apart primary bonding points (25), and a third pair of sheets (26), the first, second, and third pairs of sheets (22, 24, and 26) being bonded together locally at a plurality of spaced-apart secondary bonding points (27). The distance between the primary bonding points (25) and the distal end of the sheets of the second pair of sheets (24) varies along a transverse axis (Dt) of the bag (12).

A pouch (10) comprises a flexible bag (12) having an opening (12a) at one end, and a safety valve arranged inside the bag (12) to substantially prevent the content of the bag (12) leaving through the opening (12a). The valve comprises a first pair of sheets (22) and a second pair of sheets (24) that are bonded together locally at a plurality of spaced-apart primary bonding points (25), and a third pair of sheets (26), the first, second, and third pairs of sheets (22, 24, and 26) being bonded together locally at a plurality of spaced-apart secondary bonding points (27). The distance between the primary bonding points (25) and the distal end of the sheets of the second pair of sheets (24) varies along a transverse axis (Dt) of the bag (12).

A pouch (10) comprises a flexible bag (12) having an opening (12a) at one end, and a safety valve arranged inside the bag (12) to substantially prevent the content of the bag (12) leaving through the opening (12a). The valve comprises a first pair of sheets (22) and a second pair of sheets (24) that are bonded together locally at a plurality of spaced-apart primary bonding points (25), and a third pair of sheets (26), the first, second, and third pairs of sheets (22, 24, and 26) being bonded together locally at a plurality of spaced-apart secondary bonding points (27). The distance between the primary bonding points (25) and the distal end of the sheets of the second pair of sheets (24) varies along a transverse axis (Dt) of the bag (12).