Seamless capsules
First Claim
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1. A method for making a seamless capsule comprising a shell material encapsulating a center-filled core material comprising the steps of:
- providing a concentrically aligned multiple nozzle system having at least an outer nozzle and an inner nozzle;
supplying a shell material to the outer nozzle and a core material to the inner nozzle;
simultaneously extruding the shell material through the outer nozzle and the core material through the inner nozzle, thereby forming a coaxial jet of the shell material surrounding the core material;
introducing the coaxial jet into a flow of a heated carrier liquid or air, thereby allowing the shell material to encapsulate the core material to form capsules in the heated carrier liquid; and
introducing the capsules into a flow of a cooled carrier liquid, thereby allowing the capsules to solidify.
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Abstract
The present invention is related to a seamless capsule comprising a shell material encapsulating a center-filled core material, wherein the shell material is formed of a carbohydrate in glassy state, and a method and an apparatus for making the seamless capsule.
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Citations
9 Claims
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1. A method for making a seamless capsule comprising a shell material encapsulating a center-filled core material comprising the steps of:
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providing a concentrically aligned multiple nozzle system having at least an outer nozzle and an inner nozzle; supplying a shell material to the outer nozzle and a core material to the inner nozzle; simultaneously extruding the shell material through the outer nozzle and the core material through the inner nozzle, thereby forming a coaxial jet of the shell material surrounding the core material; introducing the coaxial jet into a flow of a heated carrier liquid or air, thereby allowing the shell material to encapsulate the core material to form capsules in the heated carrier liquid; and introducing the capsules into a flow of a cooled carrier liquid, thereby allowing the capsules to solidify. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification