Abstract
Adaptation of the natural phenomenon of drop formation has resulted in the development of forming seamless capsules.
By means of a concentric nozzle system, seamless capsules in the diameter range from 0.5 to 20mm can be continuously produced.
The influence of physical factors on the conditions to produce capsules was investigated experimentally.
The results are summarized as follows;
1) The diameter of formed capsules is about twice that of the liquid jet and is equal to the diameter of the liquid droplet which was calculated from Dabora's equation.
2) The presence of optimum flow conditions for the formation of uniform size capsules was elucidated.
3) The diameter of produced capsules increases as the pitch of capsule formation increased and decreases as viscosity of the shell liquid increased.
