| 摘要 |
<p>PURPOSE:To obtain the titled substrate that enables the insulation of the through-hole inner wall surfaces and the terminal connecting sections to be easy and complete, by filling opening sections at prescribed positions of a metal plate with an opaque resin, and molding a metal foil onto the metal plate via a resin- impregnated substrate under pressure and heating. CONSTITUTION:A plate of a metal such as aluminium, copper, stainless steel, iron or an alloy is formed with opening sections including holes, notches or the like at prescribed positions for through-holes or terminal connecting sections, and the opening sections are filled with an opaque resin that has been obtained by adding a colorant, fillr or the like to a thermoplastic resin or thermosetting resin such as a phenolic resin, epoxy resin, polyimide resin, fluorine plastic, etc. A foil of a metal such as copper, aluminium or the like is placed via a resin-impregnated resni obtained by impregnating paper or glass with a phenolic resin, polyimide resin or the like on the upper surface of undersurface of the metal plate, and they are molded under heating and pressing to obtain the desired substrate.</p> |
