Material Drying
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Product Defects Caused by Poor Drying of acrylonitrile-butadiene-styrene copolymer Raw Material
Problem Phenomenon
Problems such as silver streaks, bubbles, and decreased transparency appear in the product; the root cause is insufficient drying of the raw material.
Cause Analysis
（1）The raw material absorbs moisture during transportation or storage, and water adheres to the surface
（2）The hopper is not sealed, and the raw material absorbs moisture in the hopper
（3）The drying temperature is too low or the drying time is insufficient
（4）The dehumidification capacity of the drying equipment is insufficient, and the dew point is high
（5）The ambient humidity is high, and the dried raw material absorbs moisture again
Solution
（1）Use a dehumidifying dryer, with a drying temperature of 70-80°C and a time of 3-4h
（2）Control the moisture content of the raw material after drying below 0.02%
（3）Cover and seal the hopper, and use a heat preservation hopper when necessary
（4）The dew point temperature of the dryer is ≤-30°C
（5）Control the ambient humidity below 50%
Key Takeaway
Raw '2079851475616104451 is the basic process to ensure product quality.
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