the curtain airbag referred to in the following text as airbag exhibits airbag fabric skin 10 which is closed along circumferential seam 15 and folded edge 16 and thus surrounds the airbag interior gas space g the first edge 11 extends from the first end 11 a to the second end 11 b and forms several fixing tabs 14 in the case of a curtain airbag the first edge forms the upper edge 11 there are several non inflatable areas 17 formed by seams which serve for contouring of the airbag when deployed above the first edge 11 is located accommodation area a which serves for the accommodation of a gas generator which is located outside the gas space g fig4 shows the airbag with the gas generator 20 as accommodation area a is located outside gas space g the gas streaming radially out of the jacket area of generator 20 must be guided into gas space g although accommodation area a communicates for gas flow with the airbag interior gas space g it is characterized as outside gas space g since it is separated from the main volume of gas space g and is outside the perimeter outline of airbag fabric 10 with a narrow passageway connects accommodation area a with gas space g accommodation area a may also be described as separated from the gas space g the deflector element 30 serves for the purpose of directing gas streaming from gas generator 20 and also for protection of the fabric of the.