| 摘要 |
PURPOSE: A method for manufacturing a corrugated pad type corrugated cardboard and a corrugated cardboard packing material are provided to improve shock absorbing property by forming a curved portion, to promote productivity by excluding a separate process for improving shock absorbing property, and to maximize shock absorption and shock damping by forming an irregular auxiliary wall on a layering sheet. CONSTITUTION: A board-shaped corrugated cardboard is formed by attaching a base sheet(11) to the exposed apex of a non-sine-shaped layering sheet(21). The corrugated cardboard is rolled. The rolled corrugated cardboard(25) is pressed in a specific pressure to form a layered corrugated cardboard. Curved portions of different angles are formed in the layering sheet. |
