The engineering question
Measure good output, reject output, runner recovery, and purge independently. Then apply only the grade- and specification-approved regrind percentage to a defined blend.
What to document
Supplier processing guidance shows that regrind must be clean, appropriately dried, and limited by grade and quality requirements.
Practical workflow
Connect Scrap Rate, Regrind Blend, and Masterbatch Dosage.
Validation boundary
Use manufacturer documentation, grade-specific supplier data, controlled process records, and trials for any equipment, quality, material, or commercial commitment. A static calculator is a transparent starting point, not a simulation or approval.