MANUFACTURE OF LAMINATED SHEET

摘要

PURPOSE:To manufacture a laminated sheet for printed wiring which is capable of making high-density mounting of a high-frequency operating circuit and transmitter circuit and is superior in dimensional stability, by a method wherein the fusion point of fluorine resin of an inner layer material is made higher than a heating temperature at heating and pressurizing and the fusion point of an adhesive agent layer is made lower than the heating temperature at the heating and pressurizing. CONSTITUTION:The fusion point of an adhesive agent layer 2 is lower than that of fluorine resin of an inner layer material and a metallic foil 3 is stuck to the same. A fluorine resin film, for example, or a fluorine resin impregnated base, a plurality of the fluorine resin impregnated glass bases and metallic foils piled up in order on both sides of an inner layer material 1 are made into a set. A laminated sheet A is manufactured by unifying a plurality of the sets arranged between not platens through a molding plate by heating, pressurizing and laminating them at 200 deg.C or more and 20-150kg/cm<2> for 40-100min. In this instance, a heating temperature at the heating and pressurizing is made higher than the fusion point of an adhesive agent layer 2 and lower than that of the fluorine resin of the inner layer material 1. With this construction, the fluorine resin material of the inner layer 1 does not melt, a dimensional variation of the inner layer material 1 is small and dimensional stability of the whole becomes favorable.