초록 ▼

A cushioning material for packaging is formed of a foldable and regenerable sheet, such as a corrugated cardboard or thick paper, and is used to protect an article of a rectangular cross-sectional shape packaged in an outer case. First and third frame members (1a, 1c) for forming a pair of parallel

A cushioning material for packaging is formed of a foldable and regenerable sheet, such as a corrugated cardboard or thick paper, and is used to protect an article of a rectangular cross-sectional shape packaged in an outer case. First and third frame members (1a, 1c) for forming a pair of parallel edge members of a rectangular frame, and second and fourth frame members (1b, 1d) for forming the other pair of parallel edge members of the same frame are provided, and the frame members (1a-1d) are formed of hollow bodies having a plurality of hollow portions (10) arranged in parallel, the contour and sizes of cross sections intersecting the hollow portions (10) being substantially equal. The hollow bodies constituting the frame members (1a-1d) are formed in a row by folding corrugated cardboard, thick paper or other foldable sheet, adjacent frame members among frame members (1a-1d) being connected to outer side sheet portions (11) positioned on the outer side, when the frame members (1a-1d) are assembled into a rectangular frame, the end portions of adjacent frame members out of the frame members (1a-1d) having joint structures (16) for combining the frame members together at right angles to each other with the outer side sheet portions (11) left as they are. Therefore, this cushioning material for packaging is rarely deformed, and displays an excellent cushioning effect.

대표청구항 ▼

[What is claimed is:] [1.]first and third frame members for forming a pair of parallel edge members of a rectangular frame; andsecond and fourth frame members for forming the other pair of parallel edge members of said frame;wherein said first, second, third and fourth frame members are formed of ho

[What is claimed is:] [1.]first and third frame members for forming a pair of parallel edge members of a rectangular frame; andsecond and fourth frame members for forming the other pair of parallel edge members of said frame;wherein said first, second, third and fourth frame members are formed of hollow bodies longitudinally divided into a plurality of parallel hollow sections, the contour and sizes of cross sections through the hollow sections being substantially the same, wherein the hollow bodies constituting said frame members are formed in a row by folding a single foldable sheet, wherein adjacent frame members are connected through a single uncut side portion of said sheet which is positioned on the outer side when the frame members are assembled into the rectangular frame, and the end portions of adjacent frame members have joint structures for combining the frame members together at right angles to each other.