| 摘要 |
PROBLEM TO BE SOLVED: To prevent material sheets from being unstably shrunk and deformed and from being twisted when the material sheets are laminated by pressing them by means of a pair of hot plates. SOLUTION: Aa a pair of hot plates for pressing material sheets, a projected type hot plate 3 provided with a projected part 11 whose apex is made into a flat press face 11a and an annular projection 12 surrounding it and a recessed type hot plate 2 provided with a recessed part 13 whose bottom face is made into a flat press face 13a and an annular channel 14 surrounding it are used and when the material sheets 5 are pressed, at first, outer edge parts of the material sheets are fixed by the annular projection 12 and the annular channel 14 and thereafter, while the material sheets 5 are radially drawn by pressing them by means of the projected part 14, they are pressed on the bottom face of the recessed part 13 and are heated and pressed to perform lamination action without generating shrinkage and deformation. |
