Many customers want to use high-performance opaque plastic films in bar code labels because they can achieve a satisfactory print contrast ratio without surface treatment. In response to this demand from customers, GE Plastics has worked with its customers all over the world to develop a new white brand Uhem polyetherimide (PEI) film. The white Ultem WH217 film is toned and has a high hiding power to fully ensure the correct reading of barcode labels. With this film, the print contrast ratio can be increased to 98%. Ultem WH217 film not only helps label manufacturers save the cost and time of applying opaque outer coatings, but also has the flame retardancy that their competitors' PEN films lack; it also has better resistance than polyvinyl fluoride films. High temperature and dimensional stability. GE's Uhem WH217 film complies with UL 94 VTMO Flame Retardant Requirements for Halogen-Free Additives. The material complies with European RoHS standards and is an excellent candidate for electronic applications such as printed circuit boards.