For extrusion or extrusion blow molding systems, the components that are installed between the extruder adapter plate and the die(s)/head(s) are often places where production material hangs up, acquires heat history and degrades. This "downstream plumbing" (including transfer piping, melt pumps, static mixers, etc.) should be considered carefully when developing purging procedures for system maintenance.
King Tut and BPA
13 hours ago