| abstract |
(57) [Summary] [Structure] A mold having an excess space is used, unfilled with the molten resin composition in a state where the mold is closed, and pressure is applied to the excess space before the molten resin solidifies. It is a resin composition used in a method of completely filling a graft polymer (particle size: 1 to 5.0 μm, graft ratio 30 to 80%) and copolymer (intrinsic viscosity 0.3 to 0.8), rubber amount 5 to 30 %, And the viscosity characteristic is within the following range: 200 ° C., shear rate 10 0 (sec −1 ): 2.0 × 10 4 to 8.0 × 10 5 poise, 10 −1 (sec −1 ): 5.0 × 10 4 to 2.0 × 10 6 poise, 240 ° C., shear rate 10 0 (sec −1 ): 3.0 × 10 3 ~ 1.0 × 10 5 poise, 10 −1 (sec −1 ): 8.0 × 10 3 to 5.0 × 10 5 poise. [Effect] It is possible to obtain a thin and large molded product without sacrificing the excellent impact resistance, heat resistance and rigidity of the ABS resin composition. |