| 摘要 |
PROBLEM TO BE SOLVED: To provide an extruder which receives a material to be extruded and chemicals in the same ratio to obtain a uniform rubber compound. SOLUTION: The extruder has such a structure that a screew is housed in a cylinder and extrudes a plasticized material to be extruded to mold the same. This extruder comprises a material supply means arranged on the upstream side of the screw to supply the material to be extruded, a chemicals supply means for supplying chemicals to the material to be extruded fed by the screw while plasticized and a flow rate regulation means for regulating the feed flow rate of the plasticized material to be extruded on the downstream side of the screw. The material supply means is equipped with a four-axis gear pump and the chemicals supply means is equipped with a gear pump, which is provided on the upstream side of the flow rate regulation means with regard to the screw, and a hollow pin provided to the cylinder. COPYRIGHT: (C)2004,JPO&NCIPI |
