| 摘要 |
PURPOSE:To prepare particles having a perfectly globular shape with good yield, by attracting particles formed by spraying to the central part of a spray pattern by line of electric force generated by voltage applied to the electrostatic charging electrode provided to the intermediate part of a jet group. CONSTITUTION:A heat-meltable substance F is injected and sprayed in a solid state by respectively operating electric or pneumatic type valves 3, 4. Because two spray patterns SA, SB are respectively directed outwardly, they do not cross or overlap. However, if voltage is applied to an electrode, line of electric force is generated and a large number of particles of the heat-meltable substance in the spray patterns are attracted to the center (Pa Pa', Pb Pb') by said line of electric force to be penetrated between two fan-shaped spray patterns SA, SB. That is, said particles fill the gap between the spray patterns SA, SB.
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