Resin decomposition generates carbon which can be purge by raw material and thus lead to contamination in the finish products. For the first-line production staff of injection molding, it is suffering to handling he carbons spots problem in the finish product after holidays. 

As consensus indicated, it’s time consuming and raw material demanding to handle the carbon spots issue, sometimes it requires manual cleaning of the screw to ensure smooth production, which is annoying with high labour investment. So do we have a way to prevent black spots during shutdown?

SANP Tech. offers a screw purging compound for carbon spots dedicated to shutdown maintenance. This cleaning agent is suitable for most general-purpose plastics, such as PP/PE/PVC/POM/ABS/AS/PS/TPU, etc. By dose the material into the screw and barrel, chemicals in the purging compound can effectively resist decomposition while soften the carbon layer generated, to achieve the purpose of preventing black spots, and effectively improve the efficiency during start-up.

Contact us at  +86 13539736806, or mail to: sanpchem01@163.com  if you want to know more.