Printed graphics are susceptible to the degratory effects of UV light, rain, ozone, pollution and other external stimulus. In particular, the constant exposure of printed graphics to bright light sources is known to cause serious degradation to the color vibrancy and expected lifetime of the medium. Previously, overlamination has been used with some success to improve the longevity of inkjet printed graphics. However, sacrifices to clarity, surface quality, tensile strength and color of the overlamination films were made in this pursuit. We describe a novel overlamination base constructed from new weatherable PET technology that affords many useful advantages compared to older technologies.
Yijun Ye, Steven J Sargeant, "Development of Image Longevity Enhancing UV Blocking PET Overlamination Films" in Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP17), 2001, pp 254 - 257, https://doi.org/10.2352/ISSN.2169-4451.2001.17.1.art00054_1