Method and apparatus for forming spherical particles of thermopl

Details Method and apparatus for forming spherical particles of thermopl Method and apparatus for forming spherical particles of thermopl

1978-05-04

1980-07-15

Arnold, Donald J.

Plastic and nonmetallic article shaping or treating: processes

Spheroidizing or rounding of solid particles

264 12, B29C 2300

Patent

active

042128374

ABSTRACT:
This invention is concerned with a method for forming spherical particles of thermoplastic material, characterized by the step of blowing a stream of gas having thermoplastic particles dispersed therein from a peripheral region into a jet of pressurized hot gas to form the thermoplastic particles into uniform spherical particles. It also provides apparatus for carrying out the foregoing method which includes means for discharging a jet of pressurized hot gas from an outlet port and means for ejecting a stream of gas having thermoplastic particles dispersed therein from the periphery of the outlet port toward the jet of pressurized hot gas.

REFERENCES:
patent: 2976574 (1961-03-01), Keutgen
patent: 3290723 (1966-12-01), Jacques et al.
patent: 3639245 (1972-02-01), Nelson

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