| 摘要 |
PURPOSE: To obtain an excellent quality molding of a high fusion rate by molding again a used foamed molding by a method wherein an angular small piece of foamed polystyrene cut to a specified minimum size and volume is filled in a molding tool, and molded by foaming. CONSTITUTION: An angular small piece (preferably a cube or a rectangular parallelpiped) of foamed polystyrene so cut that a minimum size exceeds 1cm, its volume is 1.0-40cm<3> , and preferably 5-30cm<3> , is filled in a molding tool, and molded by foaming. Therefor, sawteeth wherein a plurality of circular saws 1 are alternately fixed to one piece of a shaft 9 via a spacer 2 having a diameter smaller than that of the circular saw 1 and a specific thickness, and the same rigid projection (notch) 3 as a width of the spacer 2 is arranged on a circumference of the spacer part to be integrated into one body, are used. While the integrated sawteeth are rotated, platy foamed polystyrene is sent therein. A cut line of the spacer width is notched in the platy foamed polystyrene, and the platy foamed polystyrene is cut to the cube or the rectangular parallepiped. |
