Abstract: An air cushioning material includes: a first module including a first air cell containing air, a second air cell containing air, and a first belt-like part connecting the first air cell and the second air cell to each other; a second module including a third air cell containing air, a fourth air cell containing air, and a second belt-like part connecting the third air cell and the fourth air cell to each other; a coupling part that couples a part of the second air cell and a part of the fourth air cell in a second direction, where a direction from the second air cell toward the first air cell and a direction from the fourth air cell toward the third air cell are defined as a first direction, and a direction intersecting the first direction is defined as the second direction.

Abstract: An air cushioning material includes: a first module including a first air cell containing air, a second air cell containing air, and a first belt-like part connecting the first air cell and the second air cell to each other; a second module including a third air cell containing air, a fourth air cell containing air, and a second belt-like part connecting the third air cell and the fourth air cell to each other; a coupling part that couples a part of the second air cell and a part of the fourth air cell in a second direction, where a direction from the second air cell toward the first air cell and a direction from the fourth air cell toward the third air cell are defined as a first direction, and a direction intersecting the first direction is defined as the second direction.

Abstract: A joining structure of a packaging container is divided into at least two packaging members, and the joining structure includes: first slits formed in a dividing direction and located on both side of at least one corner of a joining-side end of a first packaging member, the first packaging member and a second packaging member being joined to each other; an engaging corner formed at a joining-side end of the second packaging member, the engaging corner being engaged with each of the first slits and being located on an inner side of a corner of the first packaging member, the engaging corner being formed at a corner corresponding to the corner of the first packaging member; and a cover that continues to the engaging corner and is located to cover an outer side of a joining end of the first packaging member on an outer side of the first slits.