Layered security material and method of manufacturing such

Abstract

The present invention relates to a layered material such as paper, cardboard, or nonwoven web having a printable surface for text or graphics, composed of a base web (1) and a luminescing coating layer containing identification agent sensitive to UV light or similar, a so-called identification layer (2). Applied on the base web (1), there is at least one identification layer (2) the surface profile of which conforms to the natural formation of the base web (1) and the surface profile of the other coating layers possibly disposed on top of the base web in such a way that the identification layer (2) is at the areas (21) corresponding to the ridges of the base layer (1) thinner than that at the areas (22) corresponding to the valleys of the base layer (1); and the identification layer (2) substantially and advantageously covering the entire underlying surface; and the identification layer (2) having due to the alterations in the thickness of the coating layer, non-continuous intensity when reacting to UV light or similar, causing a cloud-like appearance. The layered material may also contain other coating layers, such as a contrast layer (3) and/or depth layers (4, 5). The present invention also relates to a method of manufacturing such a layered material.

Dependencies are inferred from the claim text.