Check the exact resin and concentrate lots, feeder record, conditioning and contact positions. Compare consecutive parts made under recorded conditions before discussing a change in blend ratio.
Current resin and concentrate codes, feeder settings and a map of test points.
Mark where each sample came from. Compare thickness, measurement direction, conditioning, line settings and the test setup at those positions before changing the formulation.
A cross-section, labeled samples and the line log. Ask for an extrusion-grade review.
Identify the target polymer grade, pigments and fillers. Ask for separate confirmation of the concentrate carrier, resin suitability and grade-specific trial guidance.
Reference sample, mixing equipment, desired finish and electrical acceptance criteria.
