Method for producing seamless material-filled capsule and miniature

Abstract

A vibrating body is so provided as to surround a jet stream composed of a capsule film material and a capsule filler material extruded from the orifice of two coaxial conduits positioned in a cooling liquid medium. The vibrating body can be controlled in reciprocating vibration in the upward and downward directions whereby it is possible to produce waves in the cooling liquid medium which are most suitable for obtaining the required diameter of capsules and the required speed of manufacture. The jet stream is formed into spherical capsule drops at markedly increased speed of manufacture owing to the control of vibration of the vibrating body and interfacial tension. The method for obtaining seamless capsules can ensure the possibility of manufacture of very small capsules, i.e. miniature capsules by mass production which has never been accomplished satisfactorily by the conventional methods and apparatus in the industry. Thus, it is made possible by this method to manufacture not only common seamless capsules but also very small seamless capsules, for example, such as oral refrigerants and spice condiments.