Wittmann Battenfeld, Torrington, Conn., will present its latest material handling and auxiliary equipment at NPE2015, including the new Tempro temperature controllers with direct cooling, Aton plus segmented wheel dryers, FC plus modules for Drymax battery dryers, Feedmax S3 net single conveying systems, Gravimax G56 gravimetric blenders, and Gravimax G14 and Gravimax G34 blenders, both of which feature RTLS (Real Time Live Scale) technology.
The Tempro basic C120 series offers direct cooling across the entire range of configuration options in terms of heating capacity, pump displacement and cooling performance. Wittmann Battenfeld notes that this model features a substantially more compact design, and it includes options for different pump packages and heating and cooling capacity. The smaller Tempro basic C120’s dimensions don’t exceed 230 x 690 x 630mm, but despite that small footprint, Wittmann Battenfeld notes that it’s still capable of handling 200 l/min with a heating capacity of either 12 of 18 kW and a pump capacity of either 0.75 or 1.5 kW. The most powerful model in the series is slightly larger, 340 x 776 x 700 mm, and has heating capacities of 18 or 24 kW, with the capability of going as high as 46 kW, and pump displacement rates ranging from 200 to 280 l/min.
Dryers Update Controls, Save Energy
Initially launched at the Fakuma show last fall (October 2014), the new Aton plus segmented wheel dryer features a new design and user interface, including a touchscreen display that not only allows for easier operation via its graphical menu, but also gives the operator an overview of all drying parameters. The dryer also offers features to save energy, including a weekly timer controlling automatic start-up and shut-off, optimization of the regeneration phase through the 3-save process, and automatic selection of the drying method when in EcoMode. Wittmann Battenfeld notes that energy savings have been measured at up to 48% over conventional wheel.
The company’s FC plus module has introduced an option for Drymax battery dryers that extends the functionality of a frequency-controlled battery dryer. An FC-controlled dryer will automatically adjust the dry air volume to the throughput requirements of each drying battery without requiring operator intervention. Furthering efficiency, the module will automatically shut off dryers with low demand, putting them in standby mode to save energy. The system can then detect an increase in material consumption, if necessary, automatically activate the dryer.
The Feedmax S3 net now features the functionality to be joined to all the neighboring equipment on the same network. Wittmann Battenfeld notes that in the past, routine tasks like stopping or adjusting conveyance often had to be done manually. Remote controls were only partially helpful since they only controlled individual units, versus the whole system. Wittmann Battenfeld says that for the first time, the Feedmax S3 net from combines the process advantages of single conveying units with the ease of a centralized control system.
Using a CAN bus, several Feedmax S3 net conveyor units can be linked and controlled from a single console. Wittmann Battenfeld provides a high-resolution 4.3” TFT touch screen, which displays the each separate unit’s status. The conveyor units also feature an LED status display standard, which allows operators to view the status of the unit quickly, easily and from a distance.
Gravimetric Blending for Up to Six Components
Wittmann Battenfeld is also releasing a new gravimetric blender, the Gravimax G56, that allows mixing of up to six different components. Even with its large blending volume of up to 5,000g, this unit meets the same standards as the company’s smaller models in terms of mechanical attributes, control system, easy access, and process reliability. Dosing is carried out by pneumatically operated, wear-resistant metering valves whose cylinders are located outside of the material flow. This setup prevents material from bridging and makes the cleaning process substantially easier. The unit includes a special RTLS (Real Time Live Scale) weighing unit that determines how often and for how long every metering valve must be activated, allowing for a metering accuracy of ±0.1%.
In addition to an easy-to-use design, the user interface of all of the new G series of blenders features the SmartRegrind function that prevents the processing machine from coming to a standstill if there is a lack of granulate. Instead, the Gravimax will supply the missing component automatically.
Wittmann Battenfeld will be presenting what it calls two world firsts: the appliance series Gravimax G14 with up to 80 kg/hr throughput and the Gravimax G34 with a maximum throughput of 200 kg/hr. Both sizes are fitted with a modernized control, and the units once again utilize stainless steel valves, which are suitable for metering materials ranging from virgin and regrind to masterbatch and additives. Both are configured for RTLS (Real Time Live Scale) operation, with continuous weighing that ensures precision for every single batch of compound.