Carolina Knife Co. manufactures circular blades used as core burst or industrial circular razor slitter blades. We manufacture these ultra-thin, extremely sharp razor slitter knife blades from a wide range of materials for all conversion industries where this type of cutting is used. In circular razor or core slitting you need a sharp blade with an edge radius of .00025 to .0005. A cutting edge can be too sharp or too dull to meet your cutting requirements. We have a number of different machines to achieve sharp cutting edges. Sometimes trial and error is required to identify the right edge radius for core cutters. We will stay with you through the trial process to find the best answer for your cutting requirements.
Industrial razor slitting, also called burst slitting, is a single knife cutting process in which an ultra-thin, extremely sharp blade, either circular or straight, is held in position while a sheet of material is drawn over the blade. The sharp blade passes smoothly through the material leaving two pieces of material. Razor slitting is not ideal for all cutting processes. Typically, rotary shear slitting can achieve much faster cut speeds on many materials.