Cushioning material and packaged product

A packaged product comprising:

• a packaging box configured by a cushioning material having a multilayer structure;
• and
• contents packed in the packaging box,
• the cushioning material including
• a first layer,
• a second layer having a strength stronger than that of the first layer, and
• a third layer having a strength stronger than that of the second layer,
• the first layer including
• a first flat plate portion having a flat plate shape, and
• a first support portion attached to the first flat plate portion and having a corrugated shape, the first support portion including a first surface and a second surface, the first surface facing the first flat plate portion, the first surface and the second surface oppositely facing along a first direction with a first thickness defined as a distance between the first surface and the second surface along the first direction,
• the second layer including
• a second flat plate portion having a flat plate shape, and
• a second support portion attached to the second flat plate portion and having a corrugated shape, the second support portion including a third surface and a fourth surface, the third surface facing the second flat plate portion, the third surface and the fourth surface oppositely facing along a second direction with a second thickness defined as a distance between the third surface and the fourth surface along the second direction, the second thickness being thicker than the first thickness, and
• the third layer including
• a third flat plate portion having a flat plate shape, and
• a third support portion attached to the third flat plate portion and having a corrugated shape, the third support portion including a fifth surface and a sixth surface, the fifth surface facing the third flat plate portion, the fifth surface and the sixth surface oppositely facing along a third direction with a third thickness defined as a distance between the fifth surface and the sixth surface along the third direction, the third thickness being thicker than the second thickness, and
• the packaging box being provided such that a cross section of the first layer in the cushioning material is visually recognizable,
• each of the first layer, the second layer, and the third layer being a single layer,
• the multilayer structure being composed of the first layer, the second layer, and the third layer, which are continuously stacked, and
• in response to an external force being applied to the cushioning material, the first layer being configured to be deformed first among the first layer, the second layer, and the third layer, and the first layer, the second layer, and the third layer being deformable in an order of the first layer, the second layer, and the third layer.

A packaged product comprising:

• a packaging box;
• contents packed in the packaging box;
• and
• a cushioning material having a multilayer structure that is accommodated in the packaging box and supports the contents inside the packaging box,
• the cushioning material including
• a first layer,
• a second layer having a strength stronger than that of the first layer, and
• a third layer having a strength stronger than that of the second layer,
• the first layer including
• a first flat plate portion having a flat plate shape, and
• a first support portion attached to the first flat plate portion and having a corrugated shape, the first support portion including a first surface and a second surface, the first surface facing the first flat plate portion, the first surface and the second surface oppositely facing along a first direction with a first thickness defined as a distance between the first surface and the second surface along the first direction,
• the second layer including
• a second flat plate portion having a flat plate shape, and
• a second support portion attached to the second flat plate portion and having a corrugated shape, the second support portion including a third surface and a fourth surface, the third surface facing the second flat plate portion, the third surface and the fourth surface oppositely facing along a second direction with a second thickness defined as a distance between the third surface and the fourth surface along the second direction, the second thickness being thicker than the first thickness, and
• the third layer including
• a third flat plate portion having a flat plate shape, and
• a third support portion attached to the third flat plate portion and having a corrugated shape, the third support portion including a fifth surface and a sixth surface, the fifth surface facing the third flat plate portion, the fifth surface and the sixth surface oppositely facing along a third direction with a third thickness defined as a distance between the fifth surface and the sixth surface along the third direction, the third thickness being thicker than the second thickness, and
• the packaging box being provided with an opening such that a cross section of the cushioning material is visually recognizable,
• each of the first layer, the second layer, and the third layer being a single layer,
• the multilayer structure being composed of the first layer, the second layer, and the third layer, which are continuously stacked, and
• in response to an external force being applied to the cushioning material, the first layer being configured to be deformed first among the first layer, the second layer, and the third layer, and the first layer, the second layer, and the third layer being deformable in an order of the first layer, the second layer, and the third layer.