| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a molding of high quality while enhancing mixing and dispersing properties of base resin and an additive even when a molding material prepared by mixing pellet type polylactic acid resin being base resin and a powdery additive is molded on a direct mixing basis. <P>SOLUTION: The pellet type polylactic acid resin and powdery additive are mixed and stored in a hopper 5. A material supply device comprising a circle feeder 7 and a fixed-quantity cutting-out device 8 is provided at a bottom part of the hopper 5. An in-line screw type injection molder is used and the material supply device is placed in operation synchronously with rotation of a screw 3 in a measurement process. The advance mixed molding material in the hopper 5 is supplied continuously from a supply port 2a of a cylinder 3 being a mass flow for a measurement time Ts which is 1.3 to 2.0 times as long as a standard measurement time T100. <P>COPYRIGHT: (C)2013,JPO&INPIT |
