Method for producing uniform particles

Details Method for producing uniform particles Method for producing uniform particles

1976-04-22

1979-07-24

Sebastian, Leland A.

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

By vibration or agitation

252316, 2523011R, 2523011S, 252408, 264 05, 264 10, 264 11, 425 7, B29C 2300, G21C 2100, G21C 1944, B01J 1300, C09K 300

Patent

active

041622820

ABSTRACT:
Uniform particles are produced by introducing a laminar stream of a core liquid into a laminar flowing body of an immiscible sheath liquid. The core liquid or the sheath liquid, or both liquids, can contain one or more materials dispersed (dissolved or suspended) in them from which the uniform particles are formed. The two liquids and the dispersed material are expelled from a nozzle to form a liquid jet. The liquid jet is disturbed at a uniform, periodic rate to form liquid droplets which contain a uniform amount of the core liquid, the sheath liquid and the dispersed material. The droplets are collected and held in a catch liquid until the core and the sheath liquid in each droplet have diffused into the catch liquid leaving the uniform particles formed from the dispersed materials. There can be more than one sheath liquid which can also contain one or more materials dispersed in it.

REFERENCES:
patent: 3290122 (1966-12-01), Clinton et al.
patent: 3329745 (1967-07-01), Grange
patent: 3331898 (1967-07-01), Haas et al.
patent: 3340567 (1967-09-01), Flack et al.
patent: 3617584 (1971-11-01), Flack et al.
patent: 3710933 (1973-01-01), Fulwyler et al.
patent: 3790492 (1974-02-01), Fulwyler
patent: 3933679 (1976-01-01), Weitzel et al.

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