| 摘要 |
PROBLEM TO BE SOLVED: To facilitate the reduction of the volume, and reduce an environmental load by a method wherein a plurality of polyhedron shaped air bubbles which are formed of a plurality of polygonal films, and have a sealed gas chamber inside are bonded. SOLUTION: A cushioning material 10 is constituted of a plurality of polyhedron shaped air bubbles 11, and the polyhedron shaped air bubble 11 is formed of a plurality of polygonal films 12. Such a cushioning material can be formed so as to meet the shape of an article to be packaged such as a precise machine, in the same manner as an expanded plastic. Also, compared to the cell of an expanded plastic, it is an aggregate of extremely large polyhedron shaped air bubbles, and the volume can be reduced by using a cutter, etc., on the market, after the usage. For the shape of the polyhedron shaped air bubble 11, from the viewpoint of a production, a tetrahedron which is constituted of four triangles, is preferable. In addition, when the tetrahedron is formed in such a manner that after a film is formed into a cylindrical shape for one time, a sealing is performed so as to be orthogonal to the axial direction of the cylinder, it is desirable that respective two triangles among the four triangles have the same shape. |
