Shell forming system

Details Shell forming system Shell forming system

1986-10-24

1990-10-02

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Means making particulate material directly from liquid or...

65 214, 4251748E, B29B 900

Patent

active

049603515

ABSTRACT:
Hollow shells of high uniformity are formed by emitting liquid through an outer nozzle and gas through an inner nozzle, to form a hollow extrusion, by flowing the gas at a velocity between about 1.3 and 10 times the liquid velocity. The natural breakup rate of the extrusion can be increased to decrease shell size by applying periodic perturbations to one of the materials prior to exiting the nozzles, to a nozzle, or to the extrusion.

REFERENCES:
patent: 4163637 (1979-08-01), Hendricks
patent: 4218416 (1980-08-01), Gokcen
patent: 4238435 (1980-12-01), Liebisch
patent: 4279632 (1981-07-01), Frosch et al.
patent: 4303431 (1981-12-01), Torobin
patent: 4333906 (1982-06-01), Porter et al.
patent: 4344787 (1982-08-01), Wang et al.
patent: 4608212 (1986-08-01), Isner

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