Operating Automated Controls on the Continental Rollo-Mixer Batch Mixer. Rollo-Mixer Batch Mixers can be equipped with electronic control panels to operate loading, mixing and coating functions as well as indexing for cleanout and finally discharging material. Continental Products Corp. is a World leader in uniform mixing, blending and coating technology. Manufacturers of the Rollo-Mixer batch mixer, which uniformly blendsin 2-3 minutes, while rotating at only 3 rpm. Featuring award winning coating technology, known as .Free-Fall Processing®. . exclusive to the Rollo-Mixer. Models available from: 3.5 -1600 cu ft working capacity. Continental works directly with its customers and manufactures custom blending and coating equipment for many industries worldwide.