Method for manufacturing synthetic fiber

Abstract

There is provided a dry-wet spinning device for an acrylic precursor fiber bundle for manufacturing carbon fibers, the device enabling stable spinning by making the coagulability of spun yarn () uniform by suppressing the vibration of the coagulating liquid surface to make the spun yarn () spun downward from a spinneret () without the liquid surface being in contact with the spinning surface of the spinneret less susceptible to an accompanying flow reflected by the bottom surface of a spinning bath. To this end, in the present invention, a horizontal flow straightening plate () produced from a porous plate or a plate material extending in the direction approximately perpendicular to the direction in which the spun yarn () is spun is disposed in a coagulation bath so as to surround the circumference of the yarn spun downward from the spinneret (). Further, a vertical flow straightening plate () extending vertically across part or all of the outer periphery of the horizontal flow straightening plate () can be provided.