Have you ever seen silvery specs in a laminated print? This defect is called silvering. It’s caused when tiny air bubbles are captured between the adhesive on an overlaminating film and the surface of a print. Silvering is generally most noticeable in the dark shadow areas of a print. Silvering frequently occurs when laminating UV-curable...
http://supply55.com/blog/2014/01/laminating-tips-silvering/
