Blow Molding
8 Aufrufe
PVC vs ABS/PP Comparison
Problembeschreibung
PVC was chosen to replace ABS to save material cost, but the scrap rate stayed high and total cost rose instead
Ursachenanalyse
PVC raw material is 40-60% cheaper but difficult to process: scrap rate, anti-corrosion molds, and long cycles can increase total cost by 5-20%; when there is no chemical resistance or flame retardant requirement, PP/ABS is more economical
Lösung
①Select material by application requirements rather than only raw material price; ②choose PVC for chemical corrosion resistance and flame retardant scenarios; ③choose ABS/PP for consumer electronics and appearance parts; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Wichtigste Erkenntnis
The cost of PVC must be calculated as a total; cheap material does not equal cheap parts, and process cost must be included; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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