Barrel Blitz Universal (BBU) is a mechanical purging compound that provides a deep-clean of the screw and barrel in order to get the machine back to its original condition. Whether Injection or Extrusion, Barrel Blitz Universal will not just perform the color change or material change but will return the screw back to mint condition—as if brand new. BBU thrives on problem materials or processes, high to low-temperature changes, heat-sensitive materials (PVC, POM, PBT, Flame-retardant additives), metalizing ABS or PA, and high-temperature materials. Never tried Barrel Blitz before? Give us a call to find out how to get a free sample.