DOUBLE ACTION BLENDER Gravimetric gain-in-weight blending Gravimetric loss-in-weight extrusion control (extruders control and take-off control) Batch gain-in-weight blending: ingredients are dosed, in sequence, by a slide-gate valve, and then fed into a gravimetric bin, mounted on load-cells. GRADO-ADROIT has an internal loss-in-weight mixing chamber, with an hemispheric bottom, installed on load-cells, which continuously weights the material flow into the extruder. The system can measure and control the extrusion throughput or use this value to control the line speed or, as an alternative, perform both functions simultaneously. With multi-layer lines, each extruder throughput is measured and controlled to maintain a constant layer-to-layer ratio. weight total cicle time SP#4 SP#3 Weight and evaluation of disperce time for next cycle Waiting signal from mixer Discharge Self compensatic control INTEGRATED VACUUM LOADING SYSTEM SMARTCONVEY Fully automatic vacuum loading system, controlled by the same PLC which controls the blending system and operated by the same HMI. One or more vacuum pumps to serve one or more receivers, whose association can be set through personalized configuration. All receivers linked to one pump are served in turn, according to a priority sequence which is automatically assigned by the control PLC. Changeover Active Control software available, to minimize the ingredients residual quantity at the end of any job order. GRADO GRAVIMETRIC GAIN-IN-WEIGHT BLENDER WITH INTEGRATED GRAVIMETRIC EXTRUSION CONTROL DOTECO SPA Via E. Mattei, 30 41037 San Martino Spino Modena ITALY Phone +39.0535.31653 Fax +39.0535.31727 E-mail [email protected] www.doteco.com DOTECO USA 2450 Abutment Road, Suite 7 Dalton, GA 30721 USA Phone +1.706.529.8787 Fax +1.706.529.1898 E-mail [email protected] www.doteco.com DOTECO LATINO AMÉRICA Rua Izonzo, 643 Ipiranga 04249-000 São Paulo BRASIL Phone +55.11.2948.1454 Fax +55.11.2351.5520 E-mail [email protected] www.doteco.co

With the ADROIT version, we gave GRADO some further characteristics which make it even more unique: GRAVIMETRIC GAIN-IN-WEIGHT BLENDER WITH INTEGRATED GRAVIMETRIC EXTRUSION CONTROL A new concept of batch blending system, with a quite innovative and original mix of design and technology. GRADO ADROIT is the highest expression of knowhow, creative thinking and passion of a leading manufacturer of batch blenders for the plastic extrusion industry, with two decades of experience and more than 10.000 blenders made. Nothing comparable in terms of blending accuracy, higher throughput, easy maintenance...