Material Analysis
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PP Melt Temperature 200-280
Problem Phenomenon
PP melt temperature 200-280°C; degradation above 300°C; differences between grades and formulations.
Cause Analysis
PP melt temperature 200-280°C; differences between homopolymer and copolymer; lower limit for high-flow grades; thermal degradation above 300°C; temperature gradient; actual measurement verification; recycled material influence.
Solution
①Control melt at 200-280°C; ②Adjust for grade differences; ③Strictly prohibit exceeding 300°C; ④Temperature gradient management; ⑤Actual measurement verification.; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
PP melt temperature 200-280°C is the standard range; the 300°C red line is the safety boundary; actual measurement prevents display errors.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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