Today, processors are confronted with more drying options than ever before. Ads and articles in the plastics magazines tout faster drying, lower energy consumption and a host of other benefits. But, how do they actually work? And, more importantly, how well do they actually work? The truth is, they all work to some degree and all have a place in plastics processing. However, no single approach provides a solution to all drying requirements. That’s why it is critical to understand the capabilities and limitations of the various dryer designs and evaluate them critically against the requirements of your application. And to do that, you first need to understand some basic principles of drying.