PRESSPLATE MATERIAL

PURPOSE:To obtain a pressplate material having a high strength of a thermally decomposable photosensitive layer, a high adhesion to a PET film as a substrate, and a superior durability by a method wherein an adhesive layer is provided between the photosensitive layer containing a nitrocellulose, a carbon black, and a binding resin and the substrate. CONSTITUTION:In a pressplate, esp. a laser engraving pressplate, an adhesive layer is provided between a photosensitive layer containing a nitrocellulose, a carbon black, and a binding resin and a substrate. The photosensitive layer is composed of a nitrocellulose, a carbon black, and a binding resin and bonded to a PET film (biaxially oriented polyester film) as the substrate through the adhesive layer. As the binding resin, a binding resin superior in resistance to solvents and resistance to wear, esp. an aromatic polyester, is used. For the adhesive layer, a material ideally bonded to both the substrate and the photosensitive layer and never affected by an organic solvent and water is used. For example, a polyurethane resin is used.