Why is the use of specialized purging compounds important?

A lot of different polymers are used in thermoplastic processing. The color change operation can be a time and material intensive process, especially in situations where hot runner manifolds are involved. A purge compound specialized for the operating parameters and materials being processed can help to reduce the amount of time and material required to clean the machine tremendously. Specific purge compounds provide maximum performance. Optimal change-over performance can only be achieved with the right purging compound as different polymers are not compatible to each other and the use of an incorrect purge compound may create a material contamination situation.