Material Drying
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PBT Injection-Molded Parts Absorbing Environmental Moisture During Storage
Problem Phenomenon
The product absorbs moisture from the ambient air when stored under unsealed conditions.
Cause Analysis
Although PBT has low hygroscopicity, it still has a certain water absorption rate (0.08%), and moisture accumulates during long-term storage.
Solution
Seal-pack the product; store in a dry environment <40%RH; use moisture-proof packaging materials.
Key Takeaway
PBT storage moisture management cannot be ignored.
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