FIELD: containers for liquids of polygonal cross-section formed by folding or erecting one or more blanks made of paper, particularly ones having spouts.
SUBSTANCE: method is adapted to connect opening device to sheet material having a number of fold lines for sheet material folding to obtain package for liquid food product. The opening device comprises body defining pouring orifice and movable lid, which closes above pouring orifice. Method involves connecting the body to packing material in position in which body is extended beyond one fold line, which forms package end, wherein the body is connected to edge of the pouring orifice made in packing material and crossing above fold line.
EFFECT: increased efficiency of opening material connection to sheet material.
18 cl, 11 dwg
