| abstract |
The invention relates to a moisture absorbing material, a manufacturing method thereof, a packaging material and a packaging material. The moisture absorbing material comprises a resin layer, a moisture absorbing layer and a moistureproof layer in sequence, and the moisture absorbing layer has a pattern structure, and the pattern structure comprises The first region of the thickness A and the second region existing in the peripheral portion of the first region and thinner than the thickness A, and having the moisture-proof layer in the first region and the second region. |