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Recycled PE film can develop gels, odor and unstable output from both feedstock and extruder faults. Diagnose feeding first before checking venting and wear.

Raising PCR content can change screw torque, melt pressure and wear. Separate feedstock variation, moisture and contamination from mechanical deterioration.

Effective extruder cleaning starts with the defect and both resin temperature windows. Match the purge mechanism to contamination and stop when hardware needs inspection.

A counter-rotating twin screw barrel can support controlled shaping but not every mixing duty. Match feed behavior and die resistance to geometry and clearances.

Prepare a custom feed screw RFQ with machine interfaces, dimensions, resin and additive data, process windows, targets, wear evidence, and drawing approvals.

Diagnose nitrided screw surface failure by mapping cracks, peeling, spalling, case depth, dimensions, events, barrel condition, and laboratory evidence.