| 摘要 |
PROBLEM TO BE SOLVED: To enhance bending strength of a paper-made board without largely increasing thickness.SOLUTION: A paper-made board is composed of a board shaped structure 10 and cardboard layers 1, 2, and 3 adhered to the board shaped structure. The board shaped structure includes: a core 4; and a first liner paper layer 2 and a second liner paper layer 3 which are adhered to the core so as to hold the core in a sandwich manner. In the paper-made board, the cardboard layers are adhered to the first liner paper layer, thickness of the board-shaped structure is about 15 to about 40 mm, thickness of the first liner paper layer and the second liner paper layer is about 0.5 to about 1.2 mm, respectively and independently, and thickness of the cardboard layers is about 1 to about 4 mm.SELECTED DRAWING: Figure 1A |
