摘要 |
<p>PURPOSE:To improve electrical property, mechanical strength, and heat resistance by spraying the mixture of thermosetting resin powder and short fibres on a base material, and laminating continuously these base materials and lengthy metallic foil, and further, conducting a heating and press-molding thereto after pre-heating thereof. CONSTITUTION:Continuous lengthy belt-shaped base materials 1 are wound around three rolls, and forwarded respectively therefrom. The mixture of thermosetting resin powder and short fibres flowed from a supplying tank by way of a pump 3 is sprayed on base material 1 by a spraying device 4. In the next place, the base materials 1 are heated to 50-80 deg.C by supporting rolls 5, furthermore, enter between rolls 6 in the form of being overlapped one another. Simultaneously, metallic foils 7 are forwarded from the upside and downside, and the laminate thereof is inserted between the upper and lower belts of a heating and pressing device 9, and then it is molded in a heating and pressing unit 12 by way of a preheating unit 10, and further, delivered continuously therefrom. In the preheating unit 10, the temperature is set such that it is below bridging reaction temperature of the resin, and the resin is melted and liquefied. The molding pressure of the heating and pressing unit 12 is made to be 10-50kg/cm<2>, and the molding temperature is made to be equal to the curing tempera ture of the resin.</p> |