| 摘要 |
PURPOSE:To improve photopermeability by providing a wax layer and a thermoplastic resin layer containing a coloring material with a specific azodye coating a fine silica powder, on a metacrylate-acrylate copolymer film. CONSTITUTION:A wax layer 22 is provided on heat-resistant resin film 20 and on the wax layer 22, a thermoplastic resin layer containing a coloring material consisting of azodye is laminated to form a high photopermeability colored sheet member. As thermoplastic resin constituting a thermoplastic resin layer, a methacrylate acrylate copolymer with max 1.50 of index of refraction need to be used. Further, a coloring material contained in the thermoplastic resin layer should be a material which is chemically coupled to the surface of fine silica powder with a particle diameter of max 10mum through an aminosilane coupling agent or an azopigment with a coating of polyazodye. |
