| 摘要 |
PURPOSE:To obtain a reflecting mirror of a parabolic antenna by embedding a reticulated reflecting member along the front in a deflected position of the front side of the reflecting mirror of a synthetic resin material in which fibers are mixed. CONSTITUTION:First of all, a reflecting member 8 and a reinforcing net 41 of a glass fiber are superposed on the forming surface by placing the net 41 first. Subsequently, a forming material 42 is superposed. The material 42 consists of approximately 47% CaCO3, 32% polyester resin, and 21% glass fiber. When the upper die 35 provided with a nut 43 in a forming part 38 is allowed to descend to the lower die 31, allowed to further descend by fitting a bar 40 into a hole 34, and pressed by prescribed pressure, a reflecting mirror is obtained between the forming surfaces 32, 36. During this time, the forming material 42 runs along the reflecting member 8, while being expanded, and moves in the peripheral edge direction of the forming surface 32 together with the reinforcing net 41. When the forming is ended, the reinforcing net 41 and the reflecting mirror 8 approach the front being a reflecting mirror and embedded without creases, and the reflecting mirror having a satisfactory electrical characteristic and a long service life is completed. |
