A continuous body folding device for folding a belt-shaped continuous body along a line of the continuous body that extends in a longitudinal direction of the continuous body so as to divide the continuous body into a first region and a second region, comprising:
- a conveying part that has a moving surface suction-holding a portion of the first region of the continuous body so as to cause the moving surface to come into contact with a first main surface of the continuous body, the moving surface moving so as to convey the continuous body in the longitudinal direction thereof;
- a first folding reference part that includes a first endless belt moving through a first circulation path, the first circulation path extending adjacent to the moving surface, the first circulation path including a first reference segment that extends in a direction parallel to a moving direction of the moving surface, from the first reference segment, the first endless belt coming into contact with a second main surface of the continuous body along the line of the continuous body, the first endless belt moving, in the first reference segment, in a direction identical to the moving direction of the moving surface at a speed identical to a moving speed of the movement of the moving surface;
- a first guide member that is disposed along the first reference segment so as to, when viewed in a direction parallel to the moving direction of the moving surface, form an acute angle between the first guide member and the moving surface, the first guide member being disposed so as to cause the first reference segment to be disposed in the acute angle adjacent to an apex of the acute angle, the first guide member being disposed so as to come into contact with the first main surface of the second region of the continuous body, thereby the second region of the continuous body moving toward the suction-held portion of the first region of the continuous body while being conveyed;
- a second folding reference part that includes a second endless belt moving through a second circulation path, the second circulation path being positioned before the first folding reference part with regards to the moving direction of the moving surface, the second circulation path extending along a plane that is parallel to the moving direction of the moving surface and is perpendicular to the moving surface, the second circulation path including a second reference segment, the second reference segment extending in the direction parallel to the moving direction of the moving surface, from the second reference segment the second endless belt coming into contact with the second main surface of the continuous body along the line of the continuous body, the second endless belt moving, in the second reference segment, in the direction identical to the moving direction of the moving surface at the speed identical to the moving speed of the movement of the moving surface;
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- a second guide member that is disposed along the second reference segment so as to, when viewed in the direction parallel to the moving direction of the moving surface, form an obtuse angle between the second guide member and the moving surface, the second guide member being disposed so as to cause the second reference segment to be disposed in the obtuse angle adjacent to an apex of the obtuse angle, the second guide member being disposed so as to come into contact with the first main surface of the second region of the continuous body, thereby the second region of the continuous body moving toward the suction-held portion of the first region of the continuous body while being conveyed.