Material Drying
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PPO Glass Fiber Grade Drying and Temperature
Problem Phenomenon
【Problem Phenomenon】PPO+PS+40% glass fiber grade uses the pure material process, and defects occur frequently
Cause Analysis
High-filled grades have drying and temperature windows different from pure material; glass fiber content increases viscosity and abrasiveness; Yize mold process data gives special parameters for PPO+PS+40% glass fiber
Solution
Execute glass fiber grades according to the dedicated process card; take the upper limit of the melt temperature window to ensure fiber wetting; wear-resistant screw and barrel configuration; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
40% glass fiber PPO is another material; the dedicated process card cannot be omitted; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent similar problems
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