First of all, the raw material contains water. If it is not processed, the quality of the product pointed out by the injection molding machine or extruder will have problems, such as insufficient hardness, poor toughness, and poor surface gloss. Therefore, a dryer is needed for drying.
Hot air dryer, mainly used to remove raw materials containing moisture on the surface, such as: PP, PE, PS, PVC
Vacuum dryer is mainly used to remove the moisture contained in raw materials, such as ABS, PET, PA, etc.
Due to the relatively expensive cost of vacuum dehumidification dryers, few of them are currently used, and dehumidification dryers are widely used.
Dehumidification dryers are divided into: compressed air dryers and molecular sieve dehumidification drying, etc.
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