Two-component material dispenser

Graco has introduced the HFR Metering System, a hydraulic, fixed-ratio, in-plant material-dispensing machine that handles two-component materials, including polyurethane foams, polyurethane elastomers, epoxies, silicones and polyureas.

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Graco (Minneapolis, Minn.) has introduced the HFR Metering System, a hydraulic, fixed-ratio, in-plant material-dispensing machine that handles two-component materials, including polyurethane foams, polyurethane elastomers, epoxies, silicones and polyureas. The unit offers a fixed ratio range of 1:1 to 16:1 and flow rates of 1.3 to 45 lb/min (0.6 to 20.5 kg/min). The system’s versatility is said to make it suitable for use in automotive, construction, recreation, medical, electronics, solar and white-goods manufacturing. Its modular design allows manufacturers to add features to the system as their manufacturing processes evolve. A motor control module executes a closed-loop control algorithm, which drives the system’s motor and produces its hydraulic fluid flow and pressure. Graco Control Architecture, the company’s standardized platform of control software and hardware, facilitates easy setup, incorporates material-monitoring capabilities and performs system diagnostics. A USB connection accommodates flash drives and permits downloading of the machine’s pressure, temperature, actual ratio and total flow output data. The user interface stores 100 shot sizes and five sequences of 20 positions each. In addition, the system’s Graco Z-Series Horizontal Pumps are capable of processing filled materials.