PURPOSE: To omit a process for making many slender gut holes and facilitate the gut spreading work by forming size of a gut hole or a gut guide groove larger than the extent that guts of a specific number of pieces can pass through simultaneously.

CONSTITUTION: Size of a gut hole 2 or a guide groove is formed larger than the extent that three pieces or more of guts 3 can pass through simultaneously. Sometimes the diameter of the gut hole and the guide hole is varied like a funnel, and the smallest diamter is constituted so that size of a conventional gut hole can be obtained. Also, the part in which the gut 3 of the gut hole 2 is wound around a frame becomes the gut hole 2 constituted of a continuous curved surface consisting of a frame constituting member, and in the extended and provided gut 3, a bent part scarcely exists in the winding-round part, and in the innermost peripheral part of the frame, the gut 3 is not fixed firmly to one point but becomes movable. Moreover, the gut hole 2 is formed so that the diameter in the longitudinal direction of the frame becomes just size of a gut mesh in the innermost periphery of the frame, and arranged so as to become alternate with each other in the same part of the frame opposed across the gut surface.