Since the recent introduction of the innovative Conair TrueBlend™ gravimetric blenders, hundreds of them have been sold. Now high-volume plastics processors can realize the benefits of these powerful, easy-to-use, leak-proof blenders. Ideal for large extruders or central blending applications, the new TB1800, TB2500 and TB3500 Series blenders can process as many as six different natural, regrind and additive materials at rates to 7000 lbs/hr, 10,000 lbs/hr and 14,000 lbs/hr respectively. Throughputs rates this high position these blenders among the largest available in the world.
The new, larger models feature the fully enclosed weighing and mixing section that makes the TrueBlend unique in the industry. When the full-length access door is closed, all pellets are contained. Other features developed especially for high rate applications include larger dispense valves, steep-sided material bins and more aggressive mixing. Flow- enhancement devices (vibrators and augers) can be added when difficult-to-flow materials are involved.
With all ingredients contained and accounted for, the Conair blenders can be accurate to within ±0.5% of setpoint on colorant and additive weights. No blender is more accurate. The standard microprocessor control adjusts after every dispense cycle, compensating automatically on the next weighed batch for normal variations in dispensing, as well as for resin bulk density and particle geometry. After ingredients are dispensed and weighed, they are dumped into a mixing chamber, which holds multiple batches of material. These individual batches are mixed for a set time, averaging out any specific batch-to-batch differences before the blend finds its way to the machine feed throat.
All TrueBlend units come with an ultra-simple control system that features a user interface with an easy-to-read 5.7-inch LCD touch-screen panel with full color graphics. All setpoints are displayed simultaneously, so setup is quick and easy. The user enters the percentages of the blend on the touchscreen display and the blender does the rest, automatically weighing the recipe ingredients in the proper sequence and maintaining the correct blend relationship. For very critical low-volume materials, where variations of a pellet or two can affect the accuracy of the blend, the controls can be set to the Precision Additive™ mode, which gives priority to the weight of that minor component. Then, dispense weights of natural resin and all other ingredients are adjusted accordingly. Up to 50 recipes can be entered and stored in the control for instant recall. Options include an integrated blender/loader control feature.
For more information, call the New Product Hotline at 1-888-486-6601
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