SPINNERET

• Main Authors: FUKUHARA MOTOTADA, NAKAMURA SHUSEI, TANIGUCHI MASAHARU
• Format: Patent
• Language: English
• Published: 01.02.1994
• Edition: 5
• Subjects: MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS; NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING; TEXTILES

PURPOSE:To obtain a spinneret capable of providing polyethylene terephthalate yarn, suppressing occurrence and deposit of stain around the circumference of delivery holes of the spinneret to stabilize a production process of spun yarn, having stable yarn quality in melt spinning of polyethylene terephthalate yarn. CONSTITUTION:A spinneret comprises polymer delivery holes consisting of an inflow part facing an inlet of a polymer, a throttling part and a delivery part facing an outlet of the polymer wherein the inflow part has a diameter continuously decreasing at an angle of 0.2-3 deg. from the central shaft of the delivery hole, the throttling part is composed of a part having a diameter continuously decreasing in the direction of delivery at an angle of 20-50 deg. from the central shaft of the delivery hole, the delivery part has a diameter continuously decreasing in the direction of delivery at an angle of 3-20 deg. from the central shaft of the delivery hole, the ratio L/D of the length L of the delivery part and the diameter D of an outlet part of the delivery hole is 1-10 and the diameter D of the outlet part of the delivery hole is 0.1-0.5mm.