POLYSTYRENE-BASED RESIN COMPOSITION FOR INJECTION MOLDING

摘要

Disclosed is a polystyrene-based resin composition for an injection molding. The composition comprises a mixture of a first and a second styrene compositions having rubbers of different particle sizes, wherein the first styrene composition includes 6-8% of the rubber having the particle diameter of 3-5 mu m, and the second styrene composition includes 7-9% of the rubber having the particle diameter of 1-3 mu m. The large-sized rubber particles and the small-sized rubber particles contact closely after the injection molding and then the exterior view of the mould product can be further improved. And the forming of a weld line is restrained.