Method and device for storing stretchable sheet

A stretchable sheet storing method comprising:

• a first conveying step in which a stretchable sheet is conveyed in a stretched state to an stretchable sheet discharger by using a conveyance roller that defines a conveyance speed of the stretchable sheet;
• and
• a second conveying step in which the stretchable sheet discharger conveys the stretchable sheet from an introduction port to a discharge port of the stretchable sheet discharger while holding both sides of the stretchable sheet in a first direction, and the discharge port of the stretchable sheet discharger reciprocates in the first direction to fold and stack the stretchable sheet discharged from the discharge port of the stretchable sheet discharger,
• wherein the conveyance speed when the stretchable sheet discharger conveys the stretchable sheet while holding the stretchable sheet in the second conveying step is lower than the conveyance speed when the conveyance roller conveys the stretchable sheet in the first conveying step.