| 摘要 |
PURPOSE:To prevent curling from occurring at the time of thermal transfer, by using a polypropylene synthetic paper having a multiplicity of minute voids in a film as a base, and providing a graft copolymer resin of alpha, beta-unsaturated carboxylic acid or anhydride thereof having a predetermined Young's modulus as an intermediate layer between the base and a dyeable resin layer. CONSTITUTION:A polypropylene synthetic paper having a multiplicity of minute voids in a film and used as a base 1 is produced by extrusing a composition having a polypropylene resin as a main constituent ind comprising an inorganic fine powder in a film form, and subjecting the extrudate to cold stretching or hot stretching. An intermediate layer 2 is constituted of a resin obtained by graft polymerization of alpha, beta-unsaturated carboxylic aid or anhydride thereof onto a covalent bond crosslinked type elastomer or a thermoplastic elastomer, the polymer containing 0.05-10 wt.% of the alpha, beta-unsaturated carboxylic acid. The material for forming the intermediate layer 2 has a Young's modulus of 1-2000kg/cm<2>. The dyable resin layer 3 is constituted of a material which is sufficiently dyeable with sublimable dyes, for example, a thermoplastic polyester resin or an epoxy resin. |
