Agitating Freeze Dryer, ACTIVE FREEZE DRYER^®

Abstract

Freeze drying is a useful technology for drying pharmaceutics, food and nano materials due to the low temperature, without liquid phase of water, and without liquid bridge between fine particles. Traditional freeze dryer is called as tray type, now we propose the new vacuum freeze dryer, “Active Freeze Dryer”with advanced principle to improve the heat transfer between the heating media and feed material. The principle is same as Vrieco-Nauta®mixer, the feed material is mixed in the dryer, the mechanism realizes higher heat transfer than tray type dryer. It can shorten the drying time rather than traditional one’s. Most of final product can be obtained as powder or granule, it means that no post milling is required. This dryer is also applied as sterile equipment.