| 摘要 |
PURPOSE:To make it possible to obtain stably a molded item having a good pattern such as a marble pattern and so on, by setting a hopper for a main raw material on the downstream side of a hopper for a auxiliary raw material, transferring the auxiliary raw material through the first screw channel, transferring the main raw material through the second screw channel and moreover setting a hole part for drop ping the main raw material eccentric from the center of a screw axis. CONSTITUTION:When a shutter 8 of a hopper B for a auxiliary raw material is opened and a shutter 10 of a hopper A for a main raw material is closed, rotation of a screw 5 is started. The auxiliary raw material enters into the first screw channel 6 and is transferred forward. When the auxiliary raw material reaches the downstream side of a shute 11 in a specified time, the shutter 10 is opened. At this time, the main raw material hardly enters into the first screw channel 6 due to the auxiliary raw material entering therein and naturally enters into the second screw channel 7 and is transferred forward. Moreover, the shute 11 is set eccentric from the center of a screw 5 axis. This process effectively prevents the auxiliary raw material from moving to the second screw channel 7 due to the swelling when it reaches below the shute 11 and it is possible to obtain a pattern.
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