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Terms referring to extrusion encapsulation have been used interchangeably for similar but distinct processes. These terminologies include: extrusion, extrusion encapsulation, melt-extrusion, hot-melt extrusion, polymer-melt extrusion, glass encapsulation, melt encapsulation, melt-injection and Durarome process. The major distinction lies in the use of either a twin-screw extruder (melt extrusion and extrusion encapsulation) or the hard candy syrup-boil process followed by injection and cooling of the syrup flavor into a solvent bath (melt injection and Durarome process). A profile comparison of the two systems is found in T-2.
Other topics discussed: Early Commercial Systems: Melt Encapsulation; Melt Extrusion (Extrusion Encapsulation); Melt Extrusion and Pressure Cooling; Commercial Product Lines; Melt Injection (Durarome Process); Melt Injection—Static Pressure Cool: Pop Rocks; Summary: Extrusion Encapsulation
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