| 摘要 |
PURPOSE:To enhance the productivity of a laminated sheet for a printed circuit board by holding a laminate between the heating medium heating/cooling hot plates of a press to heat and press the same and subsequently cooling the hot plates while forcibly cooling the laminate by cold air to shorten the molding time of the laminated sheet. CONSTITUTION:A laminate wherein prepregs and copper foils are alternately combined is held between the plates 2 of hot discs 3 heated and cooled by heating medium oil of a vacuum box type press to be heated and pressed. Thereafter, the hot discs 3 are cooled to 30 deg.C and cold air of 10 deg.C is sent into a vacuum box 5 to forcibly cool the laminate to obtain a laminated sheet for a printed circuit board. By this constitution, the molding time of the laminated sheet can be shortened and the productivity thereof is enhanced. |
