Extrusion & Post
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TPE Delamination (Material Contamination)
Problembeschreibung
Layered peeling appears on the product surface.
Ursachenanalyse
Wrong resin remaining in the hopper, insufficient cleaning during material change, recycled material contamination or mixing; incompatible resin cannot fuse with the matrix forming a weak interface.; during on-site troubleshooting, verify item by item according to this mechanism, avoiding blind machine adjustment based solely on experience
Lösung
①Thoroughly clean the hopper and barrel; ②standardize the material change process; ③classified management of recycled material; ④check the cleanliness of the storage and conveying system.; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Wichtigste Erkenntnis
Delamination mostly originates from material contamination; clean management and standardized material change are the root of prevention.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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