| abstract |
A continuous manufacturing method for hygroscopic resin powder capable of continuously manufacturing, at a high productivity, surface-reformed hygroscopic resin powder in the state of narrow grain size distribution and high physical properties and a powder level detector desirably used for the method, the method comprising a polymerization process, a drying process, a pulverizing process, a classifying process, a surface reforming process, and transfer processes for linking these processes with each other, the transfer processes further comprising at least two hoppers for storing the hygroscopic resin powder, the powder level detector desirably used for the method comprising a float suspended with a suspending wire. |