| 摘要 |
PROBLEM TO BE SOLVED: To provide a dry-wet spinning apparatus decreasing occurrence frequency of single fiber breakage to improve productivity and for spinning fiber having stable, excellent performance and free from quality dispersion between single fiber groups constituting a yarn, in the dry-wet spinning in which a spinning liquid (dope) is once spun out from a many spinning holes-bored spinneret into gaseous atmosphere such as air, and introduced into a coagulation bath charged with a coagulation liquid so as to be fiberized. SOLUTION: The dry-wet spinning apparatus includes: a coagulating bath for filling a coagulation liquid coagulating the spinning liquid spun out from a many spinning holes-bored spinneret and through an air gap; a flow tube (1) which has openings on the both ends thereof, (2) whose one end side opening has funnel shape and set under the liquid surface of the coagulation liquid, (3) whose other end side opening is set lower side than the mounted position of the one end side opening and opened to the air, (4) wherein a first straight pipe part almost vertically extending from the one end side opening to the lower side, a second straight pipe part set to form an angle of 10°-120°against the first straight pipe and a bend pipe part connecting the first straight pipe part and the second straight pipe part with a bend pipe having a predetermined radius of curvature are formed toward the opening of the other end side, and (5) which is formed to flow out the coagulation liquid, flown from the one end side opening to the inner side, from the other end side opening through the first straight pipe part, the bend pipe part and the second straight part; and a coagulation liquid supplying means set at the bend pipe part and/or the second straight pipe part of the flow tube and supplying the coagulation liquids of different density and/or temperature to the flow tube. COPYRIGHT: (C)2009,JPO&INPIT
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