| 摘要 |
PROBLEM TO BE SOLVED: To provide a shaping apparatus for extrusion foaming which can make an inert fluid fully dissolve into a material to be shaped in a short time by a simplified structure. SOLUTION: The gas nozzle 20 is connected to the cylinder 6 of the primary extruder 2, whereto the hopper 13 for supplying the material to be shaped and the gas feeding line 16 for supplying the inert gas of a supercritical state are connected, at the nozzle connection port 21 which is located downstream of the hopper 13 along the axis direction of the screw 7 of the primary extruder 2 and upstream of the extrusion throat 12. The porous member 32 is embedded in the portion of from the tip section of the gas nozzle 20 in the cylinder 6 to the inner surface 6b of the cylinder 6. Since, by this, the inert gas of a supercritical condition supplied from the gas feeding section 10 is supplied into the material to be shaped inside the cylinder 6 through the porous member 32, it is possible to mix the inert gas of the supercritical condition into the shaping material in a highly dispersed state. COPYRIGHT: (C)2004,JPO&NCIPI |
