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MWT Materials Brings RFID Shielding to Fish-Processing Plants, Airports
The company's isolation curtains and RF-blocking pads enable users to better control where RFID reader transmissions go, as well as prevent inadvertent tag readings.
Reading tags on the fish bags, however, proved challenging on the conveyors, Cloyd says. The fish itself made it difficult to read the tags unless the reader was set for a long range, which created problems when the processing plant tried to interrogate tags on adjacent conveyors. To solve this problem, Marel began working with MWT Materials and installed RF-isolation curtains at six locations where RFID signals were potentially leaking beyond the conveyors. Marel's greatest challenge now, the company reports, is ensuring that the tags remain affixed to the plastic bags. The fish-processing plant attaches the tags to approximately 18,000 20-kilogram bags daily.
Other customers of MWT Materials are using the MAS-310 tag pads to absorb near-field reflection and better target transmission to an RFID reader antenna. The pad is installed like a gasket between the tag and the object (often composed of metal) to which that tag is attached.
The company is currently developing a new type of RFID isolation curtain with a built-in window through which individuals can see. For instance, some customers have indicated that, for safety purposes, they required a way for forklift drivers who needed to drive through the curtain to see what was on the other side. The window contains an RF-conductive net, similar to that of a microwave oven's window, that is transparent while also blocking RFID transmissions.
Additionally, MWT Materials offers RF-blocking paint and wallpaper to prevent the leakage of RFID signals in such locations as retail dressing rooms and isolated areas within warehouses.
Although other companies offer RF-absorbing products, Grun says, they tend to confuse customers with too many choices, not necessarily designed specifically for RFID. MWT Materials' curtains are more flexible than other products on the market he adds, he says, due to their proprietary materials.
MWT Materials will be displaying its new RFID Portal Isolation Curtain (the version with the built-in window), as well as its other products, at its booth (#848) at RFID Journal LIVE! 2016, being held in Orlando, Fla., on May 3-5.
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