Cushioning material
A cushioning material of the present enclosure includes a base material and columnar support portions, and is arranged between a packed item and an outer box. The base material includes a main body portion which is brought into contact with a cushioned surface of the packed item and a bending part which is formed integrally with the main body portion. The columnar support portions are arranged in a plurality of places on a surface on the opposite side to a surface in contact with the cushioned surface of the base material. At least one of the columnar support portions is fixed to or formed integrally with the bending part such that, when the bending part is bent substantially perpendicularly with respect to the main body portion, all the columnar support portions protrude from the surface of the main body portion by substantially the same height.
1. A cushioning material that is arranged between a packed item and an outer box, the cushioning material comprising:
a base material that includes a main body portion which is brought into contact with a cushioned surface of the packed item and a bending part which is formed integrally with the main body portion so as to be able to be bent through a hinge line, the base material being arranged opposite the packed item; and
a plurality of columnar support portions that are arranged in a plurality of places on a surface on an opposite side to a surface of the base material in contact with the cushioned surface of the packed item,
wherein
the plurality of columnar support portions comprise
a first columnar support portion fixed to or formed integrally with the main body portion so as to protrude, in a thickness direction of the main body portion, from a face of the main body portion opposite from a face thereof in contact with the cushioned surface, and
a second columnar support portion fixed to or formed integrally with the bending part so as to protrude, in a thickness direction of the bending part, from a face of the bending part opposite from a face thereof in contact with the cushioned surface, with one end portion of the second columnar support portion protruding toward the main body portion beyond the hinge line, and
when the bending part is bent substantially perpendicularly with respect to the main body portion such that the bending part makes contact with another surface of the packed item adjacent to the cushioned surface, the first columnar support portion and the one end portion of the second columnar support portion both protrude from a surface of the main body portion toward a side surface of the outer box opposite the cushioned surface of the packed item by substantially the same amount of protrusion in a direction away from the packed item.
2. The cushioning material of claim 1 ,
wherein the first and second columnar support portions are arranged in a vicinity of at least three edges of the base material in three different directions.
3. The cushioning material of claim 1 ,
wherein the base material is formed with a corrugated cardboard sheet, and the first and second columnar support portions are each formed by stacking a plurality of corrugated cardboard sheet parts.
4. A cushioning material that is arranged between a packed item and an outer box, the cushioning material comprising:
a base material that includes a main body portion which is brought into contact with a cushioned surface of the packed item and a bending part which is formed integrally with the main body portion so as to be able to be bent through a hinge line, the base material being arranged opposite the packed item; and
a plurality of columnar support portions that are arranged in a plurality of places on a surface on an opposite side to a surface of the base material in contact with the cushioned surface of the packed item,
wherein
the plurality of columnar support portions comprise
a first columnar support portion fixed to or formed integrally with the main body portion so as to protrude, in a thickness direction of the main body portion, from a face of the main body portion opposite from a face thereof in contact with the cushioned surface, and
a second columnar support portion fixed to or formed integrally with the bending part so as to protrude, in a thickness direction of the bending part, from a face of the bending part opposite from a face thereof in contact with the cushioned surface,
when the bending part is bent substantially perpendicularly with respect to the main body portion such that the bending part makes contact with another surface of the packed item adjacent to the cushioned surface, the first and second columnar support portions both protrude from a surface of the main body portion by substantially the same amount of protrusion in a direction away from the packed item,
the hinge line is formed with a cut line and a bending line, the cut line being convex in a direction of the main body portion and U-shaped as seen in plain view, the bending line connecting the cut line and an edge of the base material, and
an edge of the second columnar support portion is arranged along the cut line.