PRODUCTION OF METAL FOIL POLYIMIDE LAMINATED BOARD

摘要

PROBLEM TO BE SOLVED: To prepare in a short time and inexpensively a large amt. of high quality metal foil polyimide laminated boards by a method wherein metal foils are laminated through a polyimide layer dried with hot air in a hot-air drying oven and they are contact-bonded and laminated together by means of pressure rollers. SOLUTION: A copper foil 10 and a stainless steel thin sheet 11 between which a polyimide film 12 is placed are fed into a hot air drying oven 22 and they are contact-bonded by means of pressure rollers 20 and 21 but before that, as they are heated with dry hot air at 250 deg.C blown out from a hot air blowing apparatus and are dehumidified and dried, the copper foil 10 and the stainless steel thin sheet 11 are strongly bonded and laminated to obtain a continuous laminated board 1a, which is transferred to a width adjusting device 3. A shearing device 4 cuts a width-adjusted laminated sheet 1c forwarded from the width adjusting device 3 to a specified length by means of a cutter 40 and a number of metal foil polyimide laminated boards 1 with a definite length are forwarded outside.