| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that a tatami mat floor using conventional straws is heavy and the tatami mat floor using foamed polystyrene generates a toxic gas in the case of combustion. SOLUTION: A large number of corrugated cardboard are laminated, directing center cores in the same direction, and formed in a shape that the corrugated cardboard is cut in fixed thickness in the direction rectangular to the direction of the lamination.
|
