| 摘要 |
There is provided a multilayer hollow container having a laminar structure including a PGA resin and a co-laminated resin, such as an aromatic polyester resin, that takes advantage of the gas-barrier property of the PGA resin layer to the utmost and is suitable for bottles of a small volume required to exhibit a higher level of gas-barrier property. The multilayer hollow container has a co-stretched multilayer wall structure including a layer of a polyglycolic acid resin comprising at least 60 wt. % of recurring unit represented by a formula of —(O.CH2.CO)— . . . (1), and a layer of co-laminated resin comprising an aromatic polyester resin or an aliphatic polyester resin other than polyglycolic acid resin laminated on at least one surface of the polyglycolic acid resin layer, and satisfying a formula of: T×w/v≦̸0.8×10−3 . . . (2), wherein T represents an oxygen gas permeability (ml/container/day/atm), v represents a volume (ml) of the container, and w represents a content (wt. %) of the polyglycolic acid resin with respect to a whole weight of the container.
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