Within a housing (11), a rotating shaft (12) extends horizontally, and curved unbinding rods are secured to the rotating shaft at diagonally opposed positions to extend in radial directions. Within the housing, an inner wall surface (14) is arranged along a circular arc whose center is aligned with an axis of the rotating shaft and whose diameter is slightly larger than a diameter of a circle drawn by rotating tips of the unbinding rods (13). A portion of the inner wall surface is formed as an unbinding surface (17) having a circular arc cross sectional shape facing the unbinding rods with a small clearance. A mass of noodles for one meal charged into the housing from the inlet (17a) is sent in the counter-clockwise direction by the unbinding rods rotated at a high speed and is hit by the unbinding rods repeatedly to perform an effective unbinding function.