| 摘要 |
A medical bag comprised of a laminate film, sheet or tube composed of three layers or more comprising an outer layer and an inner layer, at least said inner layer of said inner and outer layers in contact with a liquid contained in the bag comprises a high-density polyethylene resin having a density of 0.945 g/cm3 or more and an Mw/Mn value of 4.0 or less or a composition comprising said high-density polyethylene resin and, added thereto, less than 60% by weight of a low-density polyethylene resin having a density of 0.930 g/cm3 or less produced by a radical polymerization; and an intermediate layer comprising a composition composed of a linear, low-density polyethylene resin having a short-chain branching and a density of 0.920 g/cm3 or less and, added thereto, less than 15% by weight of a high-density polyethylene resin having a density of 0.945 g/m3 or more and an Mw/Mn value of 4.0 or less, said inner layer, intermediate layer and outer layer being in the following relationship of a thickess ratio: 0.01</=(T1+T3)/(T1+T2+T3)</=0.20 wherein T1, T2 and T3 represent the thicknesses of said inner layer, intermediate layer and outer layer, respectively.
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