The new DPM Double Planetary Mixer - an economical alternative to double-arm kneaders
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A recent innovation has stirred up a lot of excitement in many industries that rely on high viscosity mixers − the new Ross DPM Double Planetary mixer. Equipped with Rosss new HV Blades*, the new mixer can replace a double-arm kneader in many applications, cut operating costs substantially, and increase production. Double planetary mixers have generally been considered appropriate for mixing materials to1.5 million centipoise. Double-arm kneaders have traditionally handled the heavier stuff, such as highly filled adhesives, heavy silicone and butyl sealants, and bulk molding compounds. But a double-arm mixer commands about three times the price of a double planetary mixer, requires more space on the plant floor, and introduces many potential problems with shaft seals, stuffing boxes and packing glands submerged in the product zone. The double-arm unit generally operates with more horsepower and consumes more energy than a double planetary mixer. Because of its horizontal orientation, it also cannot be supported with a set of interchangeable mix vessels ҢȒ an option that often elevates double planetary mixing to a semi-continuous process. A more efficient alternative The new, streamlined DPM Double Planetary Mixer offers a variety of standard features and options that make it the most powerful, efficient and convenient double planetary mixer ever built. The standard model includes self-contained, pre-wired controls, variable speed inverter drives, and completely enclosed construction. Control options include turnkey automation, powerful data logging, and a simple >

interface with your PLC and production management system. Ross can also provide all the equipment and fabrication necessary for vacuum/pressure, heat transfer, orbiting heat sensors, change can design and discharge systems. Օ Three blade designs − Traditional, Finger and the new HV Blades − now allow you to select the right flow pattern for the material you are mixing. New HV Blades > − The HV Blade is fundamentally different than any planetary blade youve seen before. With the down-thrust action generated by its helical geometry, along with the absence of a lower crossbar, the HV Blade is...

Thanks to their helical design, the HV Blades pass one another in a nearly continuous slicing motion. The result is a balanced load, and the amperage spike is eliminated. This is a key factor in the mixers ability to handle extremely high viscosities. More efficient leading and trailing edges > ҢȒ The leading edge of the HV Blade is flat, while the trailing edge is curved. This enhances the downward thrust imparted to the batch, while it prevents the formation of dead zonesӔ in the wake of the blade. Lower crossbar eliminated > − The lower crossbar on a traditional planetary blade serves...

2. Fibrous fillers > − Many applications that include carbon or Kevlar  fillers, which are inclined to climb the blades and likely to cling to the lower crossbar of a double planetary with traditional blades, make ideal applications for HV Blades. Test drive the new DPM Double Planetary Mixer The new mixer is available for testing in the Ross Test & Development Center. This allows you to experience firsthand what the mixer can do with your ingredients, simulating conditions on your process line. It will also provide an opportunity to work with the Ross Test & Development engineering staff...