Mixers | machinery


difficult to predict and there can be deterioration in quality if the batch is overmixed,” he says. “So this is not a solution for all mixing issues. Batch mixing is particularly prone to inconsistencies between batches caused by changes in temperature, humidity, powder particle size and storage. Any problems that may be found in batches are only detectable after the mixing process has been completed on significant inventory, which, if possible, is time-consuming and expensive to correct,” he says. Continuous mixing gets around many of these


problems, McGee claims. He says the technology offers greater mixing flexibility than batch mixers and is particularly good for difficult-to-mix ingredients. “Paddle and ribbon screw geometries in continuous mixers allow greater control and more efficient mixing with negligible damage to materials,” he says. “Mixing element geometry can be used to provide a more intensive mixing action, while the open form and geometry of the ribbon screw is ideal for gentle mixing.” The flexibility of the continuous mixer is further increased by the use of interchangeable mixing shafts, allowing the machine to be used for a wide range of compounding.


Left: Ajax claims continuous mixers provide improved control and flexibility


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