| 摘要 |
A container bag for use in preserving blood or its component materials in liquid nitrogen. The container bag has excellent physical properties especially in quite low temperature conditions and is composed of: an inner layer made of ethylene-tetrafluoroethylene copolymer and an outer layer made of one member selected from the group consisting of polyethylene phthalate, polyethylene naphthalate, cross-linked polyethylene, perfluoroalkoxy resin, polytetrafluoroethylene, tetrafluoroethylene-hexafluoropropylene copolymer and aromatic polyimide.
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