Why are hot air dryers and vacuum dehumidifier used in plastic raw materials?
Because the vacuum dehumidification dryer is more expensive, it is seldom used at present. Dehumidification dryer is widely usedDesiccant dryer is divided into: compressed air dryer and molecular sieve desiccant drying, Germany, MOTAN, Zhang Jinlei can answer for you
So drier is needed.Hot air dryer is mainly used to remove the surface containing moisture of raw materials, such as: PP, PE, PS, PVCVacuum dryer is mainly used to remove moisture contained in the raw material, such as ABS, PET, PA and so on
Hello: first there is raw material with water, if not treated by injection molding or extrusion machine, the quality of the products will point out a problem, a series of problems such as insufficient hardness, toughness, good surface gloss is not good.
