PLASTIC CONTAINER FOR MEDICINAL LIQUID

摘要

PURPOSE:To provide the plastic container for a medicinal liquid which is uniformalized in thickness by improving the adhesiveness between an inside layer and an intermediate layer and has excellent flexibility, heat resistance and transparency and a good dropping property of the medicinal liquid. CONSTITUTION:The outside layer 7 of the plastic container for the medicinal liquid consists of a random copolymer of ethylene and propylene having 3 to 9wt.% content of the ethylene and 6000kg/cm<2> bending modulus of elasticity. The inside layer 8 is constituted of a mixture composed of 95 to 5wt.% linear low-density polyethylene consisting of a copolymer of ethylene and alpha-olefin and having 0.910 to 0.925g/cm<3> density and <=3000kg/cm<3> bending modulus of elasticity and 5 to 50wt.% high-pressure method low-density polyethylene having 0.910 to 0.940g/cm<3> density and 1500 to 3500kg/cm<3> bending modulus of elasticity. The thickness of the inside layer 8 is specified to >=50% of the entire part. The density of the mixture of the inside layer 8 is specified to 0.910 to 0.930g/cm<3>. The intermediate layer 9 is constituted of a mixture composed of 30 to 70wt.% random copolymer of ethylene and propylene and 70 to 30wt.% linear low-density polyethylene.