The HAAKE PCR 620 is the only on-line rheometer with PLC based control for polymer processing. Hundreds of these units are used worldwide, 24 hours a day, 7 days a week, to monitor the melt flow index or the melt viscosity of polymers. It can be configured with a variety of dies and pumps as well as various data and communication protocols to match specific applications.
Product Detail
The PCR-620 is a twin-pump bypass rheometer for polymer processing that provides on-line rheological measurements of Melt Flow Index (MFI) and Viscosity. With over 200 successful installations around the world of the PCR-620 and its predecessors, Thermo leads the industry in advanced process control technology for polymer processors producing Polyethylene (LDPE/HDPE/LLDPE), Polypropylene (PP), Ethylene Vinyl Acetate (EVA), Polyester (PET), Polymethylmethacrylate (PMMA), Polystyrene (PS), Polyamide / Nylon (PA), Polycarbonate (PC) and others.
The PCR-620 can measure at standard ASTM loads and or at higher loads (back-calculating to standard load) in order to reduce lag. The PCR-620?s patented Slit Die pressure control feature allows the PCR to operate at pressures above the process pressure, thereby insuring operation in the linear region of the transducers and prevention of out-gassing. This also allow the PCR-620 to cover a wide range of MI?s and follow transitions with a single die eliminating costly and troublesome die changes common to competitive systems.
The PCR can operate in a variety of modes: Melt Index mode, Transition MI mode, Purge mode, Viscosity mode (Stress or Rate control), and combinations. Correlations are possible to report a synthesized Mooney or Intrinsic Viscosity (IV). Recipes can be stored for various product grades to define operating parameters and control values for each product grade. All data and activity with the PCR is historically logged to databases for trending, SPC reporting and data storage.
The PCR-620 is a "Return to Stream" design and is available with a Valve Block for process isolation and an Optical Block to allow on-line spectroscopic analysis (additional equipment required). All melts pumps and Slit Dies are selectable for optimization to the process.
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