| 摘要 |
PROBLEM TO BE SOLVED: To provide a lid material for a sealed container which is inexpensively produced, free from a hygienic problem or degradation of gas barrier property during distribution, and has a function for automatically and stably releasing vapor when heating the container itself by a microwave oven.SOLUTION: A lid material 1 composed of a laminate 10 is used for sealing an opening of a container body 2 by heat-sealing to a flange part 4 of the container body 2, and includes a first layer 11 being an outermost layer composed of a heat-shrinkable film, a second layer 13 composed of an oriented film, and an innermost layer composed of an easily peelable sealant layer 16. An adhesive layer 12 for adhering the first layer and the second layer has a belt-like insufficient adhesive part 5, and the belt-like insufficient adhesive part has the directivity orthogonal or oblique to the heat-shrinking direction of the first layer and is formed across a part of the opening of the container body from one part of the flange part 4 of the container body to the other part of the flange part 4. |
