CURTAIN AIRBAG AND MANUFACTURING METHOD THEREFOR

A curtain airbag (1) is attached to a vehicle body (50) and expanded and deployed by a gas supplied from an inflator (2) and has a first surface and a second surface. The curtain airbag contains: a first region (11) along a lower edge; a second region (12) adjacent to and above the first region with a first fold line (11a) as boundary; a third region (13) adjacent to and above the second region with a second fold line (12a) formed on an opposite side of the first fold line across the second region as a boundary; where the first region is in a condition folded back at the first fold line so as to face a first surface side of the second region, the second region is in a condition folded back at the second fold line such that the folded back first region is sandwiched between the second region and the third region, the third region is in a condition rolled upward on a second surface side, with the rolling beginning from the second fold line; and the first region and the second region are provided to an inner side of the third region.