OLEFINIC RESIN COMPOSITION AND ITS SHEET

摘要

PROBLEM TO BE SOLVED: To provide an olefinic (composite) resin composition that is suitable for the thermoforming sheet material that is improved in the draw-down properties on the secondary thermoforming process, raises the productivity of the secondary formed products and can produce the secondary formed products having excellent rigidity, cold resistance and heat resistance. SOLUTION: This olefinic resin composition comprises a polypropylene resin (PP) and a polyethylene resin (PE) at a weight ratio of (97-60):(3-40). The viscosity ratio of the dynamic melt viscoelasticity of individual resins (ηr=ηPE/ηPP) is 0.1<=ηr<1 in 1 Rad/sec. and >=0.70 in 100 Rad/sec.; the difference in melt elasticity (ΔG'=GPP-GPE) is >=10,000 Pa. In addition, this olefinic (composite) resin sheet comprises the subject olefinic (composite) resin and the laminate sheet additionally including the surface layer in which the intermediate layer comprises the subject olefinic (composite) resin.