| 摘要 |
PURPOSE: To obtain a cushioning material made of a corrugated fibreboard with a resistance to load and an ease of labor of bonding. CONSTITUTION: A part of a plurality of laminated corrugated fibreboards 1 is cut out. A corrugated fibreboard 3 is fitted into a cut hole 2 in a direction orthogonal to the plurality of laminated corrugated fibreboards 1. The end faces of the fitted corrugated fibreboard 3 are disposed to be approximately flush with top and rear surfaces 1a of the laminated corrugated fibreboards 1. |
