Blow Molding
10 Aufrufe
HDPE '2079851475616104457 regrind utilization problem
Problembeschreibung
After blending trimmed regrind, gel spots and unmelted spots appear in the containers.
Ursachenanalyse
The regrind is contaminated by other materials, not pre-dried, and has too much fine powder; the melt index difference between regrind and new material is large.
Lösung
①Store regrind separately to prevent contamination; ②pre-dry the regrind and filter fine powder; ③regrind ratio ≤20%; ④control the melt index match between regrind and new material.
Wichtigste Erkenntnis
2079851475616104457 regrind: clean, dry, small amount, matched.
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