SPIN nozzle for spinning bicomponent fibers with core-core structure

摘要

A sheath-core type composite spinneret assembly comprises in combination: (1) an annular array of multiple spinning holes provided in at least in one row, (2) a spinning-stock-solutions-combining-passage being in the form of an endless annulus per the annular array of one row of the spinning holes and on which inlets of the spinning holes are open, (3) a single core-component-stock-solution-distributing-passage in the annular form; core-component-stock-solution-outlet-passages provided from the core-distributing-passage to the solutions-combining-passage; two sheath-component-stock-solution-distributing-passages, both in the annular form, sandwiching the core-distributing-passage; and sheath-component-stock-solution-outlet-passages provided from the sheath-distributing-passages to the solutions-combining-passage and open on both side edges of the solutions-combining-passage at positions located substantially in the middle of the adjacent inlets of the holes, and (4) a core-component-stock-solution-feeding-passage provided to individually feed and core- and sheath-component-stock-solutions to the core- and sheath-distributing-passage, respectively. d