Abstract: In an airbag folding method, an airbag is folded so as to provide a rolled-up shape thereon using a core member including air suction holes from which air can be sucked in. Firstly, the core member is disposed on part of the spread airbag that is to be rolled up at a location which corresponds to a center of a rolled-up shape when formed, and following this, the core member is rotated so as to wind up the airbag around the core member to thereby form a spiral shape while air is being sucked in from the air suction holes so that the airbag is drawn to be secured to an outer circumferential surface of the core member. Thereafter, a rolled-up shape is formed on the airbag by removing the core member.

Abstract: In an airbag folding method, an airbag is folded so as to provide a rolled-up shape thereon using a core member including air suction holes from which air can be sucked in. Firstly, the core member is disposed on part of the spread airbag that is to be rolled up at a location which corresponds to a center of a rolled-up shape when formed, and following this, the core member is rotated so as to wind up the airbag around the core member to thereby form a spiral shape while air is being sucked in from the air suction holes so that the airbag is drawn to be secured to an outer circumferential surface of the core member. Thereafter, a rolled-up shape is formed on the airbag by removing the core member.

Abstract: An airbag according to the present invention comprises an airbag body and a plurality of tearable wrapping yarns. The wrapping yarns are wound around the outer circumference of the wrapping area of the airbag body as folded into a generally rod-like shape, along the axial direction of the airbag body and to obliquely intersect the axial direction. In the wrapping area, at least two of the wrapping yarns are wound from the opposite directions to each other. The distance between the adjacent wrapping yarns along the axial direction of the airbag body is within the range of 20 to 60 mm in the wrapping area. The yarn strength of each wrapping yarn is within the range of 7.4 to 65N. In the airbag of the present invention, the airbag body in the wrapping area is kept in a compact shape by a simple wrapping work, while securing the smooth expansion and inflation.

Abstract: An airbag according to the present invention comprises an airbag body and a plurality of tearable wrapping yarns. The wrapping yarns are wound around the outer circumference of the wrapping area of the airbag body as folded into a generally rod-like shape, along the axial direction of the airbag body and to obliquely intersect the axial direction. In the wrapping area, at least two of the wrapping yarns are wound from the opposite directions to each other. The distance between the adjacent wrapping yarns along the axial direction of the airbag body is within the range of 20 to 60 mm in the wrapping area. The yarn strength of each wrapping yarn is within the range of 7.4 to 65N. In the airbag of the present invention, the airbag body in the wrapping area is kept in a compact shape by a simple wrapping work, while securing the smooth expansion and inflation.