Extrusion & Post
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LLDPE recycled material utilization
Problembeschreibung
After processing LLDPE recycled material, strength decreases, film gel particles increase, performance is unstable
Ursachenanalyse
The thermal history of LLDPE recycled material reduces molecular weight; performance degrades cumulatively after multiple cycles; too high a recycled material ratio dilutes virgin material performance; patented three-layer coextrusion can utilize recycled material at high ratio
Lösung
①Control recycled material ratio within 30%; ②utilize recycled material at high ratio in the three-layer coextrusion inner layer; ③clean sorting and batch verification of recycled material; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Wichtigste Erkenntnis
High-ratio utilization of LLDPE recycled material relies on structural design; the three-layer coextrusion inner layer is the best destination for recycled material; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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