In the thermoplastic extrusion-blowing industry, black dots in finish product are a very common problem. This is manifested by the intermittent carbon in the blown products, which eventually lead to high scrap rate. We have analyzed the possible sources and causes of carbon, including the possibility of resin decomposing during the start up and shown time cycle. So, how to solve the carbon problem of the extrusion-blowing machine?

Generally speaking, carbon generated during manufacturing process, start up and shut down can only be released gradually with vast amount of finish products, for site operations, this means high waste, vast labor investment and low efficiency.

In response to the problem of carbon formed during the production and shutdown of the extruder, SANP Tech. launched a special screw cleaning material for the extruder. The material can be dosed into the machine when it is shutdown. Active ingredients of the screw purging compound can effectively soften and decompose the carbons, which will effectively reduce or eliminate the occurrence of carbon, and thus improve the production efficiency.

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