Versatile and durable, Magni-lens doming is a water-clear urethane enhancement that creates a self-healing dome on a substrate. Standing tall at 0.06” (1.5mm), a unique feature of Magni-lens doming is that it functions as both - a visual and performance enhancement. Visually, it adds richness and a depth of field to the graphics below, and from a performance standpoint, it can withstand the most extreme environments.
Magni-lens (urethane) doming process
To begin the doming process, the individual components are staged on sheets so that they register precisely with the doming machine’s dispensing nozzles. As seen in the video, the dome is created with a nozzle or a hose that meters out a clear urethane coating. As the nozzle glides over the part, it dispenses the urethane polymer across the entire surface. The parts are always placed at a well-maintained distance from each other to avoid ruining the neighboring part in case of an overspill. While the featured Excel dryer part in the video has seven nozzles operating at once, different projects require different settings. Multiple nozzles correspond to the number of components that are getting domed at a given time.
After the urethane is dispensed, the parts are inspected to ensure that the resin has traveled all the way up to the edges of each part. The viscus resin gradually “wets out” the entire surface, and the parts are placed on leveling pads to air dry. Although the coating starts to harden with the “skinning of the urethane surface” in about four hours, it technically takes about a week for the part to be completely cured. Selective doming can also be achieved by using a dam to contain the resin to a specific area. The entire process of Magni-lens doming is performed in a semi-clean room to mitigate dust and foreign particles from entering the water-clear dome.
The size of the part determines the amount of resin dispensed. Since parts come in varying sizes, each of them requires differing amounts of coating. For every project, the machine is uniquely programmed where it measures the length of the part to determine the space necessary between each component in the set-up stage. Other elements such as pour speed and the length to which the nozzle travels vertically above the parts are also customized.
Benefits of Magni-lens (urethane) doming
The Magni-lens dome construction is extremely robust, chemical and moisture resistant, easy to clean, and doesn’t deform under high heat or fluctuating temperature. It is compatible with a wide range of substrates such as polycarbonate, polyester, vinyl, aluminum, and stainless steel. Its versatility, functionality, and compatibility to adhere to different substrates make it an ideal choice for indoor and outdoor applications.
Explanatory video: Magni-lens (urethane) doming technology
Bringing you a step closer to the Magni-lens technology, the video below provides a glimpse into the process of creating the urethane dome and the broad spectrum of industries that have embraced Magni-lens doming. It will also give you a glance into some of the nameplates created by GMN over the past few decades. To see the doming process in action, watch our video below.