Spinneret plate for producing polyester filament yarns

Disclosed is a spinneret plate for producing polyester filament yarns. The spinneret plate for producing the polyester filament yarns is characterized in that the spinneret plate is composed of 12 to 144 spinneret orifices which are circularly distributed and staggered layer by layer. Each dumbbell-shaped spinneret orifice is composed of two small circular holes with the same diameter, the distance between each two small circular holes is 0.04+/-0.005mm, centers of each two small circular holes are parallel and direct to the center of the spinneret plate, the diameter of each small circular hole is 0.13+/-0.01mm, the spinneret plate is made of aluminum, iron or aluminum iron alloy, and the Rockwell hardness (HRC) of the spinneret plate is in a range from 30 to 56. The spinneret plate has the advantages that the processing precision is high, the spinnability is good, the cross section of a fiber is dumbbell-shaped, the rigidity of the fiber is improved, the lodging resistance is excellent, the breathable moist