Many customers want to use high-performance opaque plastic films in bar code labels because they can achieve satisfactory print contrast ratios without surface treatment. In response to this demand from customers, GE Plastics has partnered with its customers around the world to develop a new white brand of Ultem polyetherimide (PEI) film. The white Ultem WH217 film is toned and has a high hiding power to 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 makers 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 Ultem 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.