Patent ID: 9517210
Filing Date: 2016-12-13
CPC Classification: A61J,A61K,B04C,F04C

Claim Text:
1. A method for producing a microcapsule powder, comprising a concentration step of supplying an aqueous dispersion of a microcapsule produced by in-water drying into a cyclone and then concentrating the aqueous dispersion to produce a concentrated dispersion, wherein the cyclone comprises: a cylindrical member having a cylindrical member inlet and defining a cylindrical space, a conical member attached to one end of the cylindrical member, defining a conical space, and having a conical member outlet, a tubular member attached to the other end of the cylindrical member and having a tubular member outlet, the conical space communicating with the cylindrical space, and the tubular member having an interior space that communicates with the cylindrical space; and wherein the concentration step comprises: an aqueous dispersion-supplying step of supplying the aqueous dispersion into the cylindrical member inlet, a concentrated dispersion-recovering step of recovering the concentrated dispersion discharged through the conical member outlet, further comprising a dilute dispersion-recovering step of recovering a dilute dispersion having a microcapsule concentration lower than the microcapsule concentration in the concentrated dispersion.