Method and apparatus for forming droplets and microcapsules

Details Method and apparatus for forming droplets and microcapsules Method and apparatus for forming droplets and microcapsules

1986-04-30

1987-09-08

Lovering, Richard D.

Plastic and nonmetallic article shaping or treating: processes

Encapsulating normally liquid material

Liquid encapsulation utilizing an emulsion or dispersion to...

264 4, 424 93, 424455, 424461, 425 5, 425804, A61K 962, B01J 1302, B28B 154

Patent

active

046922849

ABSTRACT:
A method and apparatus for forming microcapsules from a fluid medium containing living culture material by the atomization of the medium and the treatment of the atomized droplets with a treatment fluid. A medium under pressure enters a chamber having a wall with a plurality of orifices formed therein. A vibrator vibrates the chamber. As the medium passes through the orifices the exit stream vibrates and forms small droplets. The droplets fall into a collection vessel on the other side of the wall, which contains treatment fluid for hardening the droplets into microcapsules. A flow of treatment fluid may be maintained through the collection vessel to prevent clumping of the droplets and to transport the hardened microcapsules for harvesting. Preferred operating pressures, orifice size and chamber configuration are shown.

REFERENCES:
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patent: 3015128 (1962-01-01), Somerville, Jr.
patent: 3274642 (1966-09-01), Cramer
patent: 3463842 (1969-08-01), Flack et al.
patent: 3464926 (1969-09-01), Vandegaer et al.
patent: 3817502 (1974-06-01), Taylor
patent: 4352883 (1982-10-01), Lim
patent: 4386895 (1983-06-01), Sodickson

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