Shutter piece and shutter set for molding food dough

A shutter piece of a shutter device used for enclosing an inner material supplied on a center of a disk-like outer skin material by the outer skin material and sealing a peripheral portion of the outer skin material above the inner material,

• the shutter device having an opening defined by a plurality of shutter pieces, the opening being capable of opening and closing by swinging the plurality of shutter pieces,
• the shutter piece having an opening-side surface which faces the opening and includes an upper portion and a lower portion disposed below the upper portion,
• the upper portion having an upper edge and an intermediate edge disposed below the upper edge, and is configured to close a front end of the intermediate edge after a front end of the upper edge is closed when the plurality of shutter pieces is swung to close the opening, the intermediate edge being disposed to be recessed from the upper edge,
• the lower portion including a protruding edge disposed between the upper edge and the intermediate edge in the plan view,
• the shutter piece being configured to define a ceiling space for receiving the peripheral portion of the outer skin material when the front end of the upper edge is closed, the ceiling space including an upper space defined by the upper portion, a lower space defined by the lower portion and reduced more in diameter than the upper space, and
• the shutter piece being configured to reduce the upper space while the outer skin material in the ceiling space is held by the lower portion until the front end of the intermediate edge is closed.