Patent ID: 7776995

Claim:
A process for producing polyester particles, comprising: (1) discharging a molten polyester having a melt viscosity of from 0.5 Pa·s to 50 Pa·s from a die hole thereby creating polyester strands; (2) bringing the polyester strands into contact with a liquefied fluid for cooling to lead the strands to a cutter together with the liquefied fluid; and (3) cutting the polyester strands led to the cutter; wherein steps (1) to (3) are carried out sequentially and the drawing rate ratio of the polyester strands is from 1.5 to 100 and represented by the formula: drawing rate ratio=(linear velocity of strands immediately before cut ( v 2 (m/s)))/(linear velocity of molten polyester when discharged from die hole ( v 1 (m/s))); and wherein the pore diameter of the die hole through which the molten polyester is discharged into polyester strands is from 0.7 to 3.0 mm.