Base paper roll supply device, base paper roll supply method, and device for manufacturing cardboard sheet

A paper roll handling method that includes

• a first mill roll stand that rotatably supports a paper roll for top liner and a paper roll for top liner replacement,
• a second mill roll stand that rotatably supports a paper roll for medium paper and a paper roll for medium paper replacement, and
• a third mill roll stand that rotatably supports a paper roll for bottom liner and a paper roll for bottom liner replacement,
• in which the first mill roll stand, the second mill roll stand, and the third mill roll stand are disposed in order along a supply direction of supplying a top liner, a medium, and a bottom liner,
• the method comprising:
• moving the paper roll for top liner replacement along the supply direction to supply the paper roll for top liner replacement to a position adjacent to the paper roll for top liner;
• and
• moving the paper roll for bottom liner replacement along a direction opposite to the supply direction to supply the paper roll for bottom liner replacement to a position adjacent to the paper roll for bottom liner,
• wherein the first mill roll stand is capable of moving the paper roll for top liner and the paper roll for top liner replacement toward the supply direction, and
• the third mill roll stand is capable of moving the paper roll for bottom liner and the paper roll for bottom liner replacement toward a direction opposite to the supply direction.