Buffer material

1. A buffer material, which is mounted at a product placing member having a placing plate on which a product is placed and is formed by bending a sheet material, wherein

the placing plate is formed with a pair of slit holes arranged while being spaced apart from each other, and

the buffer material comprises:

a support plate part that supports the placing plate from below;

a pair of insertion plate parts that are concatenated to a pair of facing sides facing each other in the support plate part and are bent upward along each of the facing sides to be inserted into the pair of slit holes; and

a pair of impact absorption parts that support a lower side of the support plate part from below and absorb an impact,

wherein each of the pair of impact absorption parts has a first rectangular plate part, which is formed by cutting a predetermined place of the sheet material and is bendable downward along one end edge, and a second rectangular plate part, which is concatenated to an other end edge of the first rectangular plate part, the other end edge being parallel to the one end edge, and the second rectangular plate part being longer than the first rectangular plate part in a plate width direction, which is parallel to the other end edge, and

wherein each of the pair of impact absorption parts is formed by bending the first rectangular plate part downward along the one end edge and bending upward at a middle position between the one end edge and the other end edge to form a sectional V shape convex downward with respect to the support plate part, and further by allowing both end portions of the second rectangular plate part in the plate width direction to be engaged with and held to an upper surface of the support plate part.

2. The buffer material of claim 1 , wherein, for each of the pair of impact absorption parts,

the support plate part is formed with an opening extending along the one end edge, which is formed by bending the first rectangular plate part along the one end edge, and

the end portions of the second rectangular plate part in the plate width direction are engaged with and held to portions of the upper surface of the support plate part on opposite sides of the opening in the plate width direction.

3. The buffer material of claim 1 , wherein

for each of the pair of impact absorption parts, a first bending line is provided at a place corresponding to the one end edge, and a second bending line is provided at a place corresponding to the middle position,

the pair of facing sides are arranged in parallel to each other,

the first bending lines and the second bending lines are arranged in parallel to the pair of facing sides, and

each of the pair of impact absorption parts is formed by bending the first rectangular plate part downward along the first bending line, and bending the first rectangular plate part upward along the second bending line at the middle position between the one end edge and the other end edge to form the sectional V shape convex downward with respect to the support plate part, and further by allowing both of the end portions of the second rectangular plate part in the plate width direction to be engaged with and held to the upper surface of the support plate part.

4. The buffer material of claim 3 , wherein

for each of the pair of impact absorption parts, a third bending line is formed at a boundary position between the first rectangular plate part and the second rectangular plate part, and

the second rectangular plate part of each of the pair of impact absorbing parts is engaged with and held to the upper surface of the support plate part by being bent horizontally along the third bending line.