METHOD OF CLASSIFYING ETHYLENE OXIDE-BUTYLENE OXIDE COPOLYMER RESIN PELLET AND ETHYLENE OXIDE-BUTYLENE OXIDE COPOLYMER RESIN PELLET OBTAINED THEREBY

摘要

PROBLEM TO BE SOLVED: To provide a method of classifying with a good efficiency by which lightweight articles such as fine resin powders, scuffed wastes being more lightweight than that of an ethylene oxide-butylene oxide copolymer resin pellet are eliminated from this resin pellet, there is no increase in water content of the resin caused by water content in air, and the resin can be prevented from fusing.;SOLUTION: The resin pellet is introduced into a classifying machine from the upper part of the classifying machine 10 equipped with an opening part and having an inclined plate 12, and when it is passed through above the plate 12 equipped with the opening part, the resin pellet and the lightweight articles are separated with a wind force of a dried gas jetted from the opening part.;COPYRIGHT: (C)2006,JPO&NCIPI