Thermochromic decals for moist or wet environments with changing temperatures

Abstract

A polylaminated, waterproof, thermally-sensitive decal has a waterproof base that is adhesive on its outer surface and printable on its inner surface; an advertising image printed on the inner surface; a printable covering that overlays the advertising image; a layer of thermochromic ink on the printable covering such that the thermochromic ink is opaque at room temperature but is translucent at increased temperature; and a waterproof layer designed to overlay and protect the thermochromic ink in a moist or wet environment. The decals are designed to fit within the confines of a urinal and to act as a target for the user. The decals are easily applied and removed and are intended for use in moist or wet environments. Also disclosed is a method of advertising. The method includes providing a decal comprising a plastic layer that is adhesive on one surface and printable on its second surface; an advertising image or slogan printed on the second surface, a printable covering that overlays the advertising image, a layer of thermochromic ink such that the thermochromic ink is opaque at room temperature but is translucent at increased temperature in a moist or environment, and a waterproof layer designed to overlay the thermochromic ink; placing the decal in a urinal at a height above the fluid level, but near the fluid level for the higher-temperature urine to contact the decal; and replacing the decal periodically to coincide with new advertising campaigns.

Dependencies are inferred from the claim text.