Tougher, but still clear and flexible
Terrapin G coating uses tiny nanomaterial particulates in a thin, flexible coating that is transparent but durable. Terrapin G has a pencil hardness of 3H on the JIS 9401 test and 4H on the ASTM D3363 test, both on polyester film substrate and HB pencil hardness on either test on polycarbonate. Tekra's tests also showed 20 percent better abrasion resistance. Terrapin G is designed for PDA and cell phone lenses, and other high-use opto-electronic applications like signature verification windows, LCDs and OLEDs. This coating also resists common household and industrial cleaning chemicals, as well as oils and food products. It also adheres to sputter-coated metals and oxides. It is available in polyester web widths up to 60 inches in 2-, 3-, 4-, 5-, 7- and 10-mil thicknesses, and polycarbonate web widths up to 48 inches and thicknesses of 7-, 10-, 15-, 20-, 25- and 30-mil.