| abstract |
Provided are a hygroscopic material having a large moisture absorption capacity and capable of maintaining good hygroscopicity for a long time without performing end sealing treatment, a method for producing the same, a packaging material, and a package. A resin layer, a moisture absorbing layer, and a moisture proof layer are provided in this order, and the moisture absorbing layer is present in a first region having a thickness A and a peripheral region of the first region, and a second region having a thickness smaller than the thickness A. And a manufacturing method, a packaging material, and a package of the moisture-absorbing material having a moisture-proof layer in the first region and the second region. [Selection] Figure 1 |