Toilet paper roll manufacturing method

A toilet paper roll manufacturing method comprising:

• a first step of pulling out base paper from each of multiple base paper rolls;
• a second step of introducing multiple sheets of the base paper to a lamination unit, laminating the multiple sheets of the base paper, and forming 4-ply toilet paper;
• a third step of drying the 4-ply toilet paper;
• and
• a fourth step of rolling up the 4-ply toilet paper and manufacturing a 4-ply toilet paper roll,
• wherein the second step comprises:
• a fifth step of separating the multiple sheets of the base paper introduced to the lamination unit into multiple sheets of 1-ply base paper;
• a sixth step of operating a first sprayer to spray a bonding liquid between first base paper and second base paper among the multiple sheets of 1-ply base paper and forming first laminated paper made up of the first base paper and the second base paper;
• a seventh step of operating a second sprayer to spray the bonding liquid between third base paper and fourth base paper among the multiple sheets of 1-ply base paper and forming second laminated paper made up of the third base paper and the fourth base paper;
• and
• an eighth step of operating a third sprayer to spray the bonding liquid between the first laminated paper and the second laminated paper, and operating a first pressure roller to stack and press the first laminated paper and the second laminated paper and to form the 4-ply toilet paper,
• the sixth step and the seventh step being performed simultaneously.