| 摘要 |
<p>PURPOSE:To produce a laminated sheet with excellent high frequency characteristics in a continuous technique and to improve dimensional stability by laminating prepregs made of a fluororesin porous sheet as a base material and a prepreg made of a glass fabric as a base material in layers, performing laminate molding thereof, cutting it into a specified dimension, performing aftercuring thereof and thereafter quenching it. CONSTITUTION:A prepreg 1a is prepd. by using a porous sheet of a fluororesin as a base material and a prepreg 1b is prepd. by using a glass fabric as a base material. The prepregs 1a and 1b are continuously fed through guide rolls 6 and are continuously put in layers by means of laminating rolls 7. While a laminate 5 wherein the prepregs 1a and 1b and if necessary, a metal foil 10 are put in layers is continuously transferred, it is preheated and continuously introduced in a double belt 2. The laminate 5 is passed through the double belt 2 and heat-pressed by means of press-heating apparatus 11 between upper and lower endless belts 3 and 4 to obtain a laminated sheet A. The laminated sheet A cut in a specified dimension is introduced in an aftercuring oven to perform aftercuring thereof and the laminated sheet A is quenched just after it is taken out of the aftercuring oven.</p> |
