Balloon rod (1) made of cardboard and comprising an oblong sheet (2) formed of cardboard comprising, in turn, a rod part (3) and a balloon blocking part (4) disposed at one end of the balloon. rod part (3) and defined, in sequence from one of its free ends (4a), by a first pair of transverse, lateral and collinear notches (6) between them, a first fold line (7 ), a longitudinal opening (8), a second fold line (12) arranged to intersect said longitudinal opening (8), a third fold line (13) and a second pair of transverse, lateral and collinear notches (14) between them. Main figure: figure 1
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