Importance

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Abstract

Substances such as chemical substances and biological substances including animal, vegetable and microbial cells are encapsulated using a process and an apparatus wherein a coil through which alternating current flows causes a magnet to vibrate creating vibrations such as in the range of between 300 to 4000 Hz that are transmitted to an encapsulating fluid containing the substance to form small substantially spherical particles containing the substance. The apparatus includes a pulsation chamber containing a movable wall for receiving the encapsulating fluid containing the substance to be encapsulated. A nozzle is spaced downstream from the pulsation chamber for receiving the encapsulating fluid from the pulsation chamber. A permanent magnet is mounted on the movable wall, and a coil is spaced from the permanent magnet by an air gap and is located proximate to the permanent magnet. An alternating current source is connected to the coil for creating an alternating magnetic wave that causes vibration of the permanent magnet and wall attached thereto resulting in pulsing of the encapsulating fluid from the pulsation chamber through the nozzle to form the particles in which the substance is encapsulated.

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First Claim