Molds & Tooling
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PBT mold temperature 50-75℃
Problem Phenomenon
Uneven product crystallization, poor surface gloss, or bending deformation caused by uneven cooling
Cause Analysis
PBT crystallizes fast and cooling time is short, mold temperature 50-75℃ is appropriate; too low mold temperature causes insufficient crystallization and uneven cooling easily causes bending; high mold temperature improves crystallization and surface quality
Solution
①Control mold temperature at 50-75℃; ②appropriately increase mold temperature for warpage-sensitive parts; ③uniform control by mold temperature controller to prevent temperature difference; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
PBT's fast crystallization determines the short cycle advantage; the 50-75℃ mold temperature range is the balance between crystallization quality and deformation control; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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