Production & Quality
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PP Part Stress Crack Resistance
Problembeschreibung
PP containers crack after holding detergent.
Ursachenanalyse
Some PP grades undergo environmental stress cracking in surfactant environments; areas with high internal stress crack first.
Lösung
①Select ESCR-resistant grades; ②reduce internal stress; ③avoid high-stress assembly; ④perform media compatibility verification.
Wichtigste Erkenntnis
Verify ESCR before holding chemicals.
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