| 摘要 |
PROBLEM TO BE SOLVED: To provide an injection molding method capable of efficiently manufacturing many kinds of light diffusing panels having a different light diffusion agent concentration by using a master batch, and an injection-molded part. SOLUTION: In the injection molding method wherein the master batch kneaded a thermosetting resin with the light diffusion agent is mixed with the thermosetting resin to dilute the light diffusion agent concentration to carry out injection molding, the injection molding method characterized in that the injection molding is carried out by using an injection molding press with a kneading screw satisfying 0.03L≤L1≤0.5L, wherein the effective length of a screw is represented by L and the length of a mixing mechanism is represented by L1, and the injection-molded part formed by the injection molding method are included. COPYRIGHT: (C)2004,JPO |
