| 摘要 |
[Problem] To provide a biodegradable resin bottle forming a vacuum-evaporated hydrocarbon film on the inner surface of the container wall while effectively preventing the bottle from being thermally deformed at the time of forming the film, the film exhibiting excellent barrier property against both oxygen and water even when either an oily content or an aqueous content is filled therein. [Means for Solution] A biodegradable resin bottle having a container wall 1 comprising a biodegradable resin and having a vacuum-evaporated film 3 formed on the inner surface of the container wall 1 by a plasma CVD method, wherein the vacuum-evaporated film 3 includes a first hydrocarbon vacuum-evaporated layer 3a positioned on the inner surface of the container wall and a second hydrocarbon vacuum-evaporated layer 3b formed on the above hydrocarbon vacuum-evaporated layer 3a, the first hydrocarbon vacuum-evaporated layer 3a has polar groups introduced therein, and the second hydrocarbon vacuum-evaporated layer 3b exhibits hydrocarbon peaks stemming from CH, CH 2 and CH 3 in a region of wave numbers of 3200 to 2600 cm -1 as measured by FT-IR, has a CH 2 ratio of not larger than 35% and a CH 3 ratio of not smaller than 40% per the sum of CH, CH 2 and CH 3 calculated from the hydrocarbon peaks, and has no polar group introduced therein. |
