FIELD: medicine.
SUBSTANCE: bag for liquid content contains a soft shell with a hole at one end, a safety valve located inside the shell and preventing exit of shell contents through the hole. Valve comprises a first pair of sheets, each first pair of sheets having a proximal end attached to the wall of the shell near the opening, and a distal end opposite to the proximal end in the longitudinal direction of the shell, a second pair of sheets, each sheet of which is located inside first pair of sheets and has proximal end located near hole, and a distal end closer to the opening in the longitudinal direction than the distal end of the first pair of sheets, and a third pair of sheets, each sheet of which is located inside the second pair of sheets and has a proximal end near the opening of the shell and a distal end closer to the opening of the shell in the longitudinal direction than the distal end of the second pair of sheets. Sheets of the first pair and the second pair are locally connected to each other near the distal end of sheets of the second pair in a plurality of primary connecting points spaced apart along the transverse direction of the shell and not joining sheets of the third pair of sheets with sheets of the first or second pairs of sheets. Sheets of all pairs of sheets are locally interconnected in multiple secondary connecting points spaced from each other. Primary connecting points are located at different distances from the distal end of sheets of the second pair of sheets.
EFFECT: invention ensures hygiene and prevents the shell content output.
7 cl, 5 dwg
