| 摘要 |
PURPOSE:To change a color of a molded article efficiently by a construction wherein a plurality of piping systems each supplying the respective colored second solution are provided in parallel, and these piping systems are selected by a system selecting device so as to supply the solution of each system selectively to a mixing device. CONSTITUTION:A plurality of tanks 2a, 2b and 2c are provided for storing second solutions containing different coloring agents respectively, and a plurality of piping systems 9a, 9b and 9c connecting said tanks respectively to a mixing device 6 for making the respective solutions react to a first solution stored in a tank 1 for the first solution prior to injection are provided in parallel to that the second solutions containing different coloring agents respectively can be supplied to the mixing device through a system selecting device 5. By this construction, the coloring of polyurethane can be varied easily, and thus a variable color reaction injection molding machine suited also for manufacturing a small quantity of articles of various colors can be furnished. |
