CLASSIFYING AND PURIFYING APPARATUS OF SOLID BLOWING AGENTS AND METHODS OF CLASSIFYING AND PURIFYING SOLID BLOWING AGENTS

摘要

A classifying and purifying apparatus of a solid blowing agent includes a classifier which classifies a supplied solid blowing agent into first microspheres and second microspheres, a storage connected to the classifier, in which the classified first microspheres flow in to be stored and emitted, and a filter arranged on the moving route of the solid blowing agent or the first microspheres which separates metallic substance from the object of filtering comprising the solid blowing agent or the first microspheres.