Most natural rubber products are made with a calendering process where soft rubber material is fed between two hard, cylindrical rollers to create a sheet. This sheet is then further pressed between hard rollers to create smoother and thinner rubber sheets. The sheets can then be used for various products, including conveyor belts, tires or mats.
Rubber thickness sensors are need to determine the material thickness as it is processed through successive steps of the calendaring process. The challenge with this is that the material is often quite tacky and hot. Tactile sensors can not be used on hot rubber if an accurate measurement is demanded. Laser displacement sensors offer a non-contact and highly-accurate solution for rubber thickness measurement.