| 摘要 |
<p>PURPOSE:To improve a natural dripping property and to further enhance heat resistance by arranging a copolymer consisting of a specific amount of an alpha-olefin and propylene to an inner layer and arranging a specific amount of copolymer consisting of a specific amount of an alpha-olefin and propylene to an outer layer to form a multilayer structure. CONSTITUTION:In a plastic container 1 for transfusion constituted of a container main body 2 and a cap 3, a multilayer structure wherein an alpha-olefin/propylene copolymer containing alpha-olefin in an amount of below 3wt.% is arranged to an inner layer 2a and an alpha-olefin/propylene random copolymer containing 4-20wt.% of alpha-olefin is arranged to an outer layer 2b is formed. In order to satisfy flexibility capable of performing natural dripping, it is necessary to impart flexural modulas of 6,000kg/cm<3> or less in general. The thickness ratio of the inner and outer layers is pref. 5:95-50:50.</p> |
