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Key features
Fast drying
Less handling
Free flowing powder
High quality dried end-product
No contamination
Why Active freeze drying
Until now most of the freeze dryers are of the Tray Dryer type. Despite the optimal structure of the individual product particles the product layer on the plates will usually form one piece of hard baked material. Often the product has to be crushed after freeze drying, which may lead to damage of the product structure. Another disadvantage is the relatively low heat transfer rate due to the dead state of the material on the plates. Also the handling of the product is quite labour intensive because the trays have to be filled and discharged manually.
The Advantages
The Hosokawa Active Freeze Dryer™ enables to produce at low temperature and low pressure a lump-free, free-flowing, freeze dried product (see picture). The Active Freeze Dryer™ also has a better heat transfer rate due to the continuous mixing of the product, resulting in shortening the drying process. Furthermore the freezing step is simplified because it can be done in the same vessel instead of having a separate freezing unit, which results in easy handling of the product compared to the tray dryer equipment. The Active Freeze Dryer™ can also be used in continuous operation. Since the dried product is released from the frozen material during the drying process, these dry particles can be collected separate from the actual dryer.
Typical applications
Typical applications of this lyophilisation technology are e.g.:
temperature sensitive materials
delicate structured materials
pro-biotics (bacteria as food additives)
pharmaceuticals
blood serum
ultra-fine (nano) materials
Test equipment at your disposal
In the test-facility of Hosokawa in Doetinchem - Netherlands a 5 litres and a 60 litres Freeze Dryer are available for testing.
We have experience in freeze drying of bacteria, enzymes, pharmaceuticals, probiotics, polymers, salts, ceramics, lime stone, bakery yeast, yeast, broth extracts, molds, herbal extracts, glass powder, vegetables, lipides, insects, acrylic solution, api’s, milk, milk derivatives, nano materials, catalysts, seed based soup, gelling agents, flavours, cellulose fibres, proteins, etc.
Information?
Please contact us by filling out our contact form.
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