Patent ID: 7713375

Claim:
A dry erase writing board comprising; (A) a chalk or erase board having a face side, and (B) a multilayer film comprising (B-1) a clear dry erasable layer having an upper surface and a lower surface and comprising at least one fluorocarbon polymer the clear dry erasable layer having a thickness ranging from about 0.2 to about 3 mils; (B-2) an opaque polymer film having a thickness ranging from about 1 to about 6 mils and having an upper surface and a lower surface wherein the upper surface of an opaque polymer film is laminated to the lower surface of the dry erasable layer; (B-3) a continuous layer of an adhesive having a coat weight ranging from 10 to about 30 gsm and a thickness between 0.5 to about 5 mils and the continuous layer having an upper surface and a lower surface wherein the upper surface of the adhesive layer is adhered to the lower surface of the opaque polymer film; and (B-4) a pattern of non-adhesive material forms which is (B-4a) embedded into the upper surface of the adhesive layer, each of said non-adhesive material forms in the upper surface of the adhesive layer having a top surface wherein the top surfaces of the non-adhesive material forms are even with or below the plane of the upper surface of the adhesive layer; or (B-4b) embedded into the lower surface of the adhesive layer, each of said non-adhesive material forms in the lower surface of the adhesive layer having a bottom surface, wherein the bottom surfaces of the non-adhesive material forms are either even with, above or below the plane of the lower surface of the adhesive layer; or (B-4c) adhered to the lower surface of the adhesive layer; wherein the lower surface of the adhesive layer of the multilayer film (B) is adhered to the face side of the chalk or dry erase board.