| abstract |
The resin particle group is a group of resin particles consisting of a crosslinked vinyl resin having a volume average particle diameter of 0.5 to 10 占 퐉, wherein the number of resin particles having a particle diameter at least twice the volume average particle diameter is 5 or less, The proportion of the resin particles having a circularity of 0.97 or less is 1% or less. The method for producing a resin particle group composed of a crosslinked vinyl resin having a volume average particle diameter of 0.5 to 10 占 퐉 is characterized in that after the generation of the resin particle group, a classifying step is carried out without a descaling step, And air is supplied from the first and second injection nozzles to the upper and lower portions of the classifying cavity, respectively, to classify the air in the classifying cavities. |