| 摘要 |
PROBLEM TO BE SOLVED: To provide a packaging bag, capable of independently adjusting an adsorption amount of moisture and an adsorption amount of out gas such as smell, in a bag, according to a content therein.SOLUTION: A packaging bag of the invention comprises: a hygroscopic lamination film comprising a hygroscopic film which includes a hygroscopic layer containing a first zeolite in which the SiO/AlOmolar ratio is less than 3.0, and a first base material film; and a gas adsorption lamination film comprising a gas adsorption film which includes a gas adsorption layer containing a second zeolite in which the SiO/AlOmolar ratio is 3.0 or higher, and a second base material film. The packaging bag of the invention is configured so that the hygroscopic lamination film and the gas adsorption lamination film are arranged so that the hygroscopic film and the gas adsorption film face each other, and peripheral edges of the facing hygroscopic film and gas adsorption film are heat sealed.SELECTED DRAWING: Figure 1 |
