Method for manufacturing fused sheets

A fusion-bonded sheet article manufacturing device that continuously manufactures a plurality of fusion-bonded sheet articles each having sealed edge sections, by irradiating, with a laser beam, a belt-shaped sheet laminate in which a plurality of sheets are laminated and cutting and separating the sheet laminate, and fusion-bonding cut edge sections created, by the cutting/separation, in the plurality of sheets, the manufacturing device comprising:

• a support member that travels in a predetermined direction in a state where the sheet laminate is arranged on an outer surface of the support member, and that has a light passage section through which a laser beam can pass;
• an irradiation head that is arranged on an inner surface side of the support member and that emits the laser beam toward the support member;
• and a pressurizing means that pressurizes, from a side opposite from the support member, the sheet laminate which is arranged on the outer surface of the support member,
• wherein the support member includes an anterior holding region employed for holding the sheet laminate before being irradiated with the laser beam, a holding region employed for holding the sheet laminate during the laser beam irradiation, and a posterior holding region employed for holding the sheet laminate after being irradiated with the laser beam.