| 主权项 |
1. A sheet object cover, comprising:
a cover, comprising a first plate and a second plate, the cover having an opening status or a closing status; and a three dimensional structure, comprising a top plate and a bottom plate, and the top plate having a first opening, a first crease and a plurality of first binding layers, and the bottom plate having a second crease and a plurality of second binding layers, and the plurality of first binding layers bound with the first plate and the second plate respectively, and the first opening configured for placing a sheet object, the plurality of second binding layers bound with the first plate and the second plate respectively; wherein when the cover is in the closing status, the top plate and the bottom plate are folded along the first crease and the second crease to be accommodated inside the cover, so that the sheet object is accommodated inside the cover. |
