Dryers for Plastic Resin

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WITTMANN material dryers and drying hoppers: the essential standard in modern plastics processing. – Highest flexibility, capacity, and energy efficiency.

Card G and E Series: These compressed air dryers are small, simple and effective. The Card G and E series are ideal for simple drying applications. Once the temperature has been set and the optional loader has been activated, nothing stands in the way of effective drying.

SLEEP Mode – No over-drying/thermal degradation of the material due to the reduction of the drying parameters during machine downtimes.

Completely insulated drying hopper – Internal material hopper made of mirror polished stainless steel for drying temperatures of up to 200 °C.

Air flow (starting with Card 20E) – Controlled via a simple radiator valve that reduces the amount of compressed air to the optimum.

Integrated control for loaders – For the automatic filling of the drying hopper, Card dryers offer the possibility of a material loader connection.

Low maintenance – No dehumidification media are used, thus only the air outlet filter has to be cleaned.

Card G/FIT, S, M, and L with FIT Control: These dryers are increasing the performance spectrum of the dry air dryer range. The intelligent FIT control and the digital air control offer flexible possible applications directly at the machine feeder, and also beside the machine. Card M and L compressed air dryers offer a secondary circuit for the preheating of the plastic resin.

Intelligent FIT microprocessor control – With touch display for an exact temperature setting, and with diverse interface options.

SLEEP Mode – No over-drying/thermal degradation of the material due to reduction of the drying parameters during machine downtimes.

COUNT DOWN Mode – Shows the remaining drying time, activating an alarm signal after the set time period has expired.

Completely insulated drying hopper – Internal material hopper made of mirror polished stainless steel for drying temperatures of up to 200 °C.

Digital air control – Extremely precise air control due to digital engineering an proportional valve.

Drymax 30, Drymax 60

The Drymax series dry air dryers are equipped with two desiccant beds to supply continuous dry process air and constant quality for the perfect drying of plastic resin.

Motorized switchover valve – Operation without compressed air lines and optimized control of drying and regeneration cycles in both desiccant beds.

Energy saving counter airflow regeneration – Reduced energy costs through fastest dehumidification of the desiccant beds during the regeneration phase.

SmartReg energy saving function – For the time optimized control of regeneration and cooling of the desiccant beds (on Drymax 60).

SmartFlow intelligent air distribution – Automatic air distribution to adjust to different materials and fluctuating material demands (available on units with 2 drying hoppers).

Material saver function – Avoids over-drying and thermal degradation of the plastic resin through short term lowering of the drying temperature during the production stoppages of the processing machine.

Micro particle filter in return air – Dust separation efficiency of up to 99.9% for high process safety.

Options: Dew Point Sensor | Return Air Cooler | Micro Particle Filter in Process Air | High Temperature Construction

Aton basic 30, 70, 120

The rotating wheel of the Aton basic consists of many segments filled with desiccant beads. This provides maximum energy efficiency and allows for easy replacement of the desiccant beads as an alternative to purchase a complete segmented Wheel.

Weekly timer

AmbiLED – The innovative light indication bezel conveniently displays the operating mode and dryer status through the use of color coded illumination.

Material saver function – Prevents over-drying and thermal degradation of plastic resin during periods of reduced throughput by automatically lowering the drying temperature.

Dew point management – The user settable dew point automatically adjusts the regeneration temperature to achieve maximum energy savings.

Aton plus 30, 70, 120

The Aton plus segmented wheel dryer provides the advantages of a consistent dew point and maximum energy efficiency. This dryer is equipped with the WITTMANN segmented drying wheel and has a multitude of energy saving functions. Above that, it uses a touchscreen as the user interface and the Net5 system. Via this, drying parameters can be set, and material loaders can be connected to the system and can be administrated (e.g. Feedmax S3-net).

Dew point to -65°C (-85°F)

AmbiLED– The innovative control bezel conveniently displays the operating mode and dryer status through the use of color coded illumination.

Material database via USB-stick – Material data sets can be imported via a USB interface.

3Save Process – Intelligent Use of Energy – Three separate methods use the heating energy of the dryer to significantly reduce energy consumption. The combination of counter airflow regeneration, radiant heat recovery, and efficient heater design make up the 3Save Process.

EcoMode – Indexing Regeneration During Lower Water Load – During high water loads, continuous wheel mode provides the best dry air conditions. The Aton plus adjusts automatically the regeneration temperature when the material throughput or water load in the plastic resin is reduced. The regeneration works by indexing portions of the wheel and is saving energy.

Dew point management – The user settable dew point automatically adjusts the regeneration temperature to achieve maximum energy savings.

Material saver function – Prevents over-drying and thermal degradation of plastic resin during periods of reduced throughput by automatically lowering the drying temperature.

Drymax 180 – 1200: The DRYMAX battery dryer series are equipped with two desiccant beds and therefore provide continuous process air and constant dry air quality for the perfect drying of plastic resin.

Weekly timer

Switchover valves, stop position controlled – The switchover valves provide optimized control of drying and regeneration cycles in both desiccant beds.

Energy saving counter airflow regeneration – Reduces energy costs through fastest dehumidification of the desiccant beds during the regeneration phase.

SmartReg energy saving function – Time-optimized control of the regeneration and cooling of the desiccant beds.

Micro particle filter in return air – Dust separation efficiency of up to 99.9% for high process safety.

Side channel blowers – For separate process and regeneration blowers in order to guarantee constant air flow even during fluctuating pressure conditions.

Aton 1000: The Aton 1000 battery wheel dryer is equipped with a clocked rotating segmented wheel, thus allowing for a constant creation of dry air. The highly developed drying wheel named ECO wheel is isolated and consists of several segments that are closely filled with a highly efficient desiccant, thus allowing operation at a constantly low dew point.

Intelligent CrossFlow function – Heat exchanger with closed circuit leading to a reduction of energy consumption | Isolated ECO wheel drying wheel – Allows to operate the dry air dryer at a low dew point of up to -65°C (-85°F).

Chain drive with automatic tensioning device – For less maintenance and reliable operation | 5,7" touch-screen user interface – For an easy input of the dryer settings | AmbiLED performance indication – Not only the operation mode of the dryer is displayed, but also its actual performance | User-friendly access for maintenance – Return air filter and regeneration filter are accessible from the outside.

Silmax 100 – 1200: The Silmax drying hoppers with integrated microprocessor control are available in table versions from 100 up to 1,200 l.

Robust stainless steel execution – All components in contact with the material are made of stainless steel and are therefore perfectly suited for critical and abrasive applications.

Efficiency enhancing insulation – The drying hoppers are equipped with 40 mm thick insulation across the entire height in order to reduce heat losses and increase drying efficiency.

SmartFlow intelligent air distribution – Automatic air distribution to adjust to different materials and fluctuating material demands.

Integrated CAN interface – Allows extensive data exchange and status forwarding between the dryer and a central system for visualization.

Convenient clean out door – Drying hoppers of sizes 100 l and up are equipped as standard with a clean-out door ideally suited for the respective hopper diameter. The perfect geometry of the hopper guarantees uniform drying of the material across the entire cross section.

Integrated sight glass – For the convenient visual inspection of material flow and material level.

Material slide gate – All drying hoppers are included as a standard with a manual slide gate.

Material saver function – Avoids over-drying and thermal degradation of the plastic resin through short term lowering of the drying temperature during production stoppages of the processing machine.

Silmax compact 30 – 150: Silmax compact drying hoppers are designed for battery drying systems as well as compact portable systems. Battery drying systems are available with either 2 or 3 independent drying hoppers.

SmartFlow intelligent air distribution – Automatic air distribution to adjust to different materials and fluctuating material demands.

Integrated CAN interface – Allows extensive data exchange and status forwarding between the dryer and a central system for visualization.

Integrated sight glass – For the convenient visual inspection of material flow and material level.

Material slide gate – All drying hoppers are included as a standard with a manual slide gate.

Option – Available with one or two material outlets as well as with controlled discharged valve for the efficient purging after the loading cycle (in connection with WITTMANN M8 control system).