BUCHI Encapsulator B-390 - Manual (Page 27)

5 Putting into operation
27 B-390 Operation Manual, Version C
5 .8 Option: Concentric nozzle system
The concentric nozzle system (CN system) is an optional kit to the single nozzle unit. It is for the
production of capsules in a one-step procedure. The system consists of CN bead producing unit, a
set of 7 shell nozzles (0.20, 0.30, 0.40, 0.50, 0.60, 0.70 and 0.90 mm) and one pressure bottle of
1000 mL. The shell liquid is pumped by air pressure using the pressure bottle.
The main parts of the concentric nozzle unit are (refer to figure 5-12):
• the nozzle pair with shell a and core  nozzle.
• CN bead producing unit with CN pulsation body  and magnet
holder .
Figure 5-11: Capsule formation
a Shell nozzle
 Core nozzle
 CN pulsation body
 Magnet holder
 Luer connection, for
core liquid
 Luer connection, for
shell liquid
 Vibration unit
 Carrier plate
Figure 5-12: Schematic description of the concentric nozzle system