| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus and a method for stably producing a hardly spinnable filament yarn having excellent uniformity and grade of the yarn. SOLUTION: The apparatus for producing the filament yarn has a spinneret 1 for a molten polymer, a supporting member 3 protruding from a surface in a direction perpendicular to the running path direction to the downstream side in the running path direction of the yarn, and supporting the spinneret so as to surround the outer edge part of the spinneret, an inwardly blowing-annular cooling means provided with an annular air-blowing surface 5 for blowing an air flow from the outer peripheral side of the running path of the yarn in the inward direction, and cooling the yarn. In the apparatus for producing the yarn, the upper end T of the air flow-blowing surface on the upstream side in the running path direction of the yarn is disposed in a region H surrounded by a surface of the spinneret in the direction perpendicular to the running path direction of the yarn on the downstream side in the running path direction of the yarn, an inner peripheral surface of the supporting member surrounding the running path of the yarn, and a surface of the supporting member perpendicular to the running path direction of the yarn passing through the lower end on the downstream side in the running path direction of the yarn. COPYRIGHT: (C)2010,JPO&INPIT
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