How to achieve uniform mixtures with master batching
Achieving the right proportion of a minor or micro ingredient in a batch can make or break the final product. But mixing these ingredients uniformly throughout the batch is no simple matter. Using a master batch, also called a premix, can greatly improve your product by increasing production, reducing ingredient handling, reducing worker exposure to ingredients, and providing more uniform mixture quality from batch to batch. This article first describes mixture components, then discusses choosing a mixer, developing a mixing specification, and using master batching to achieve uniform mixing. Related information covers ingredient characteristics to consider when creating a master batch.
In a batch, major ingredients (called the carrier) constitute 75 percent or more of the material. A minor ingredient typically makes up 5 percent or less, and a micro ingredient typically constitutes less than 1 percent.