In the chocolate industry, particle size distribution is a key metric of process performance. One step in manufacturing chocolate is grinding it through a roller refiner. The chocolate's particle size distribution is largely determined by this grinding process. Particle size distribution is crucial in determining chocolate taste and viscosity. To avoid a gritty texture, chocolate particles should be no larger than 30 microns in size. To allow the chocolate to flow, particles should not fall below 7 microns. On average, this limits chocolate particle size distribution to no more than 23 microns.

A chocolate manufacturer partnered with Precision Roll Grinders to service a set of refiner rolls in hopes of machine process improvements. The performance of the refiner with precision ground rolls was compared to another refiner. The particle size distribution of the chocolate from the refiner with precision ground rolls was 20.5 microns, while the particle size distribution of chocolate from the other refiner was 26.6 microns, exceeding the recommended particle size distribution for quality chocolate. The refiner with precision ground rolls produced chocolate samples with improved particle size distribution and improved process control.

Precision Roll Grinders is the globally recognized leader in critical roll grinding solutions. Our customers manufacture in a wide range of industries, including chocolate and ink, paper, metals, plastics, rubber, nonwovens, food, and energy. Our company commits to realized savings for your refiners and your processes.

Contact your local Precision Roll Grinders account manager to learn more.