Packing member and packing material therewith

1 . A packing member comprising:

a body portion including

a bottom face portion that is rectangular in shape and on which a packed article is placed, and

a side face portion that is provided continuously with the bottom face portion via folding lines along three sides of the bottom face portion,

the body portion being assembled by folding a piece of sheet; and

a shock absorbing member disposed along one side of the body portion along which the side face portion is not provided continuously therewith,

wherein

the shock absorbing member has a holding structure that keeps the side face portion upright relative to the bottom face portion,

the side face portion is configured with:

first and second side face portions that are provided continuously with the bottom face portion via folding lines along two opposite sides of the bottom face portion; and

a third side face portion that is provided continuously with the bottom face portion via a folding line along another side of the bottom face portion, and

the shock absorbing member includes:

a first shock absorbing member disposed along an inner face of the first side face portion;

a second shock absorbing member disposed along an inner face of the second side face portion; and

a third shock absorbing member fixed to the first and the second shock absorbing members so as to bridge between the first and second shock absorbing members.

2 . The packing member according to claim 1 , wherein

the packed article has a fragile part that has a multilayer structure in one direction among horizontal directions,

the third shock absorbing member has one or more bent portions formed in a U-shape as seen from a side face, the bent portions being arranged adjacent to each other in a top-bottom direction, and

the bent portions are inserted into a gap in the fragile part.

3 . The packing member according to claim 1 , wherein

along sides of the first and the second side face portions opposite from the bottom face portion, first and second flaps are provided continuously with the first and the second side face portions via folding lines, and

the holding structure is configured with:

a cut portion formed in the first and the second flaps; and

an engagement portion formed in the first and the second shock absorbing members, the engagement portion being inserted into the cut portion.

4 . The packing member according to claim 1 , wherein

along two sides of the third side face portion orthogonal to the bottom face portion, third and fourth flaps are provided continuously with the third side face portion via folding lines, and

the holding structure is configured with:

an insert segment formed in the third and the fourth flaps; and

an insertion hole formed in the first and the second shock absorbing members, the insert segment being inserted into the insertion hole.

5 . The packing member according to claim 1 , wherein

in the third side face portion, a shock absorbing structure forming portion is formed that has a plurality of folding lines and folding the shock absorbing structure forming portion along the folding lines into a shape of a rectangular tube forms a shock absorbing structure for protecting the packed article from a shock.

6 . The packing member according to claim 1 , wherein

with two sides of the body portion with which the first and the second side face portions are provided continuously, shock absorbing member fixing segments are provided continuously via folding lines, the shock absorbing member fixing segments being engaged with the first and the second shock absorbing members.

7 . A packing material comprising:

the packing member according to claim 1 ;

an outer case in which the packing member is housed; and

a pillar member disposed in a gap between the packing member and the outer case.