FIELD: household chemical goods. SUBSTANCE: surface material is applied onto films or paper directly from aqueous solutions and is composed of water-soluble polyvinyl alcohol partially acetalized by aliphatic (C1-C8)-aldehyde with degree of acetalization less than 20 mol % based on vinyl alcohol units. EFFECT: enabled application of surface material with the aid of conventional hydrophilic slate pencils suitable for making a good ineffaceable images. 10 cl, 1 dwg, 2 ex
