| 摘要 |
PURPOSE:To provide a coated metal plate which consists of an upper layer comprising a crystalline saturated polyester resin and of a lower layer comprising an amorphous polyester resin, by a method wherein a metal plate is heated to a melting point Tm, of a crystalline saturated polyester resin film, -Tm+ 160 deg.C, and after said film is laminated, the lamination is cooled within 60sec. CONSTITUTION:In case a crystalline saturated polyester resin film is laminated to a metal plate, the metal plate is heated to the melting point Tm, of said resin, -Tm+160 deg.C, and after said film is laminated, the lamination is cooled within 60sec. This forms a tow-layer structure comprising a crystalline saturated polyester resin for an upper layer and an unfixed polyester resin having a crystalline index of 0-20% for a lower layer, and permits the production, in a very high productivity, of a polyester resin film-coated metal plate which has said unfixed polyester resin layer with a thickness of not more than 40% of that of a total polyester resin layer and is not more than 20mum thick. |
