... . Category: divided by printed forms: - Plain foil (no printing) - words Printing foil (single-side print, double-sides printing, single ... printing, double colors printing, multi colors printing) - Colorful foil (single-side gold, double-sides gold, green background, a ... application: Protective layer (OP) / outer printing layer / aluminum foil substrate (AL) inside printing layer / binder (VC). Used in ...