VISCOTEC: Two-Component Dispensing System for Potting Applications
The system is suited for low- to mid-viscosity, respectively self-leveling materials, like epoxies, polyurethanes, or silicones.
ViscoTec has expanded its product portfolio with the compact, two-component ViScaMix dispensing system with ViscoTec RD dispensers. The standalone dispensing system is designed for manual potting applications, especially for the electronics industry. It is perfectly suited for low- to mid-viscosity, respectively self-leveling materials, like epoxies, polyurethanes, or silicones.
Those two-component materials can contain fillers and can be dispensed with a mixing ratio of 1:1 to 10:1. The system is designed with two pressure containers, one each per component.
The pressure vessels are filled manually with the single components. Alternatively, half-automated filling through suction with the help of a venturi valve is possible. Depending on the requirements of the material, necessary evacuation parameters need to be determined, and the fluid will be stirred while being degassed.
Following treatment and preparation, the dispensers need to be calibrated before the dispensing process. Whether directly applied onto the components through a handgun, attached with a static mixer, or filled into containers before being applied on site, the mixing ratio of the two-component potting materials stays within the parameters, and the mixing quality is maintained.
The dispensing parameters for the progressive cavity dispensers can be adjusted within the integrated HMI of the controller: dispensing quantity, speed, mixing ratio, calibration factors, pot life alarm, quantity shots, or continuous dispensing, as well as start/stop directly at the handgun or foot switch. The dispensing results are accurate and reliable. The mixing is done by a disposable static mixer. Possible flow rates vary within 10-600 ml/min, depending on the configuration of the system.
Agitators are available for each vessel, if required, to prevent separation of the fillers or to speed up the degassing process. In addition, the system can be equipped with a vacuum option—to either suck the material into the vessels out of their container or to evacuate entrapped gas bubbles—for a more stable process and to avoid contact with humidity for sensitive materials.
For materials with medium viscosity, additional pressure can be applied to the vessels to reach higher feeding rates to the dispensers. Optional heating functionality is also available to reach higher curing rates or lower the viscosities of the components.
If the manufacturing rates are increased, the system can be upgraded to a solution that is fit for automation and can be integrated into an existing superior PLC of a robot or XYZ table. The ViscoDuo-VM mixing head can be attached directly to the gantry.
Learn more about ViscoTec’s ViScaMix dispensing system with ViscoTec RD dispensers at www.viscotec.de.
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