Plastic Film Dewatering Machine Suppliers
Source plastic film dewatering machines from verified B2B manufacturers on Towobo. After washing, plastic film flake carries significant surface moisture that must be removed before pelletising or direct sale as flake — excess moisture in the extruder causes poor pellet quality and potential equipment damage. Centrifugal dryers and squeeze-roll (screw press) dewatering systems are the primary mechanical dewatering technologies for film recycling lines. This guide covers machine types, their applications, and key specifications.
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Browse Plastic Film Dewatering Machine Suppliers on Towobo →Centrifugal dryers vs squeeze-roll dewatering — choosing the right technology
Centrifugal dryers (spin dryers) use a high-speed rotating basket or drum to throw surface water off plastic flakes or film by centrifugal force. They are well-suited to rigid plastic flake and shorter-cut film pieces where the material flows freely in the rotating drum. A well-designed centrifugal dryer reduces moisture content from approximately 30–50% (after washing) to below 3–5% (surface moisture) in a single pass. A subsequent thermal dryer then reduces moisture to below 0.5% or less for pelletising. Centrifugal dryers are the most common mechanical dewatering stage in plastic recycling lines. Squeeze-roll dewatering machines (screw press or compaction dryers) mechanically compress wet plastic film between rollers or in a screw press to expel water — rather than spinning it off. They are particularly effective for long, tangled film pieces that do not flow well in a centrifugal dryer. Squeeze-type dewatering is used in lines handling whole agricultural mulch film, long shrink film strips, or other materials that present feeding challenges for centrifugal dryers. Some plant designs combine a squeeze dewatering stage with a centrifugal dryer to achieve lower final moisture content more efficiently.