| 摘要 |
PURPOSE:To obtain high heat resistance and to obtain easily a metal foil double- clad laminated continuous lengths by adhering a metal foil or a heat-resistant film with a resin layer formed on the metal foil or the heat-resistant film. CONSTITUTION:At least one face of a metal foil or a heat-resistant film is coated with a soln. of a resin wherein an org. solvent-soluble polyimide resin and/or polyamideimide resin are main ingredients in an org. solvent and it is dried so as to obtain a volatile content of 1-30wt.% to form a resin layer. A plurality of heat-resistant films are piled up so as to make the resin layers face to face each other or on a metal foil or a resin layer of the heat-resistant film, another metal foil or heat-resistant film is piled up and they are wound in a roll shape. The metal foil laminated body wound in a roll shape is heated at 150-250 deg.C to remove an org. solvent in the resin layer. When the volatile content is less than 1wt.%, the resin layer does not have enough adhesive properties and in the contrary, when the volatile content exceeds 30wt.%, a volatile org. solvent remains in the laminated body or generates air bubbles. |
