The new Electric Variable Ratio Metering System EVR™ allows manufacturers to change ratios without changing equipment.
The international producer of fluid handling equipment Graco
has recently launched the new customisable Electric Variable Ratio Metering System EVR™, that will allow manufacturers to change ratios as they mix, meter and dispense two component (2K) materials with the same equipment.
“For many industrial manufacturers, honing certain material compositions means putting production on hold to swap out hardware or pumps. This is especially problematic for electric vehicle (EV) battery assembly and other applications, with constantly changing process requirements and technical specifications,” has stated Robert Delgado, the global strategist and product manager for eMobility of the Industrial Division of Graco.
While developing the new technology, the company has closely worked in cooperation with material suppliers in order to try different ratios and viscosities for research and development purposes. The high flow EVR can move up to 6,400 cm3 per minute, while flexing dispense ratios anywhere between 1:1 to 5:1 or 2:1 to 10:1. When the material changes, the base purge feature of EVR conserves the amount of solvent used to clean out the system by independently driving either material side. It also keeps old material from curing, so that there is no need to replace a static or dynamic mixer because of fast curing materials or intermittent production runs.
“Whether it is thermal interface material, epoxy, silicone, urethane or acrylic; two component material uses and requirements are always changing. To keep up, manufacturers and suppliers must make adjustments ‘on the fly’ and with minimal capital reinvestment,” has concluded Delgado.